Andrei Gritsan

Andrei Gritsan

Johns Hopkins University

H-index: 250

North America-United States

Andrei Gritsan Information

University

Johns Hopkins University

Position

Professor of Physics

Citations(all)

375093

Citations(since 2020)

134825

Cited By

269146

hIndex(all)

250

hIndex(since 2020)

145

i10Index(all)

1660

i10Index(since 2020)

1197

Email

University Profile Page

Johns Hopkins University

Andrei Gritsan Skills & Research Interests

Particle Physics

Top articles of Andrei Gritsan

Measurements of azimuthal anisotropy of nonprompt D0 mesons in PbPb collisions at sNN= 5.02 TeV

Authors

Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,A Escalante Del Valle,Priya Sajid Hussain,Manfred Jeitler,Natascha Krammer,Lukas Lechner,Dietrich Liko,Ivan Mikulec,Peter Paulitsch,Florian Michael Pitters,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Mangesh Sonawane,Sebastian Templ,Wolfgang Waltenberger,C-E Wulz,Mohamed Rashad Darwish,Tahys Janssen,Tomas Kello,H Rejeb Sfar,Pierre Van Mechelen,Emil Sørensen Bols,Jorgen d'Hondt,Alexandre De Moor,Martin Delcourt,Hesham El Faham,Steven Lowette,Seth Moortgat,Alexander Morton,Denise Müller,Abanti Ranadhir Sahasransu,Stefaan Tavernier,Walter Van Doninck,David Vannerom,Barbara Clerbaux,Gilles De Lentdecker,Laurent Favart,Dmytro Hohov,Johny Jaramillo,Kyeongpil Lee,Mostafa Mahdavikhorrami,Inna Makarenko,Andrea Malara,Santiago Paredes,Laurent Pétré,Nicolas Postiau,Laurent Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,D Dobur,J Knolle,L Lambrecht,G Mestdach,C Rendón,A Samalan,K Skovpen,M Tytgat,N Van Den Bossche,B Vermassen,L Wezenbeek,A Benecke,G Bruno,F Bury,C Caputo,P David,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,V Lemaitre,K Mondal,A Taliercio,TT Tran,P Vischia,S Wertz,GA Alves,E Coelho,C Hensel,A Moraes,P Rebello Teles,WL Aldá Júnior,M Alves Gallo Pereira,M Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,V Dos Santos Sousa,S Fonseca De Souza,J Martins,C Mora Herrera,K Mota Amarilo,L Mundim,H Nogima,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,F Torres Da Silva De Araujo,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,PG Mercadante,SF Novaes,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,E Shumka,S Thakur,T Cheng,T Javaid,M Mittal,L Yuan,M Ahmad,G Bauer,Z Hu,S Lezki,K Yi,GM Chen,HS Chen,M Chen,F Iemmi,CH Jiang,A Kapoor,H Liao

Journal

Physics Letters B

Published Date

2024/2/12

Measurements of the elliptic (v 2) and triangular (v 3) azimuthal anisotropy coefficients are presented for Image 1 mesons produced in Image 2 hadron decays (nonprompt Image 1 mesons) in lead-lead collisions at s NN= 5.02 TeV. The results are compared with previously published charm meson anisotropies measured using prompt Image 1 mesons. The data were collected with the CMS detector in 2018 with an integrated luminosity of 0.58 nb− 1. Azimuthal anisotropy is sensitive to the interactions of quarks with the hot and dense medium created in heavy ion collisions. Comparing results for prompt and nonprompt Image 1 mesons can assist in understanding the mass dependence of these interactions. The nonprompt results show lower magnitudes of v 2 and v 3 and weaker dependences on the meson transverse momentum and collision centrality than those found for prompt Image 1 mesons. The results are …

Review of top quark mass measurements in CMS

Authors

Aram Hayrapetyan,Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,Andre Hoang,Priya Sajid Hussain,Manfred Jeitler,Natascha Krammer,Ang Li,Dietrich Liko,Ivan Mikulec,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Mangesh Sonawane,Sebastian Templ,Wolfgang Waltenberger,Claudia-Elisabeth Wulz,Mohamed Rashad Darwish,Tahys Janssen,Pierre van Mechelen,Emil Sørensen Bols,Jorgen d'Hondt,Soumya Dansana,Alexandre de Moor,Martin Delcourt,Steven Lowette,Inna Makarenko,Denise Müller,Stefaan Tavernier,Michael Tytgat,Gerrit Patrick van Onsem,Senne van Putte,David Vannerom,Barbara Clerbaux,Aloke Kumar Das,Gilles de Lentdecker,Hugues Evard,Laurent Favart,Paraskevas Gianneios,Dmytro Hohov,Johny Jaramillo,Ali Khalilzadeh,Fakhri Alam Khan,Kyeongpil Lee,Mostafa Mahdavikhorrami,Andrea Malara,Santiago Paredes,Laurent Thomas,Max Vanden Bemden,Pascal Vanlaer,Maarten de Coen,Didar Dobur,Yanwen Hong,Joscha Knolle,Luka Lambrecht,Gianny Mestdach,Kevin Mota Amarilo,César Rendón,Amrutha Samalan,Kirill Skovpen,Niels van den Bossche,Jan van der Linden,Liam Wezenbeek,Anna Benecke,Agni Bethani,Giacomo Bruno,Claudio Caputo,Christophe Delaere,Izzeddin Suat Donertas,Andrea Giammanco,Sandhya Jain,Vincent Lemaitre,Jindrich Lidrych,Paola Mastrapasqua,Tu Thong Tran,Sébastien Wertz,Gilvan Alves,Eduardo Coelho,Carsten Hensel,Thales Menezes de Oliveira,Arthur Moraes,Patricia Rebello Teles,Mariana Soeiro,Walter Luiz Aldá Júnior,Miguel Alves Gallo Pereira,Mapse Barroso Ferreira Filho,Helena Brandao Malbouisson,Wagner Carvalho,Jose Chinellato,Eliza Melo da Costa,Gustavo Gil da Silveira,Dilson de Jesus Damiao,Sandro Fonseca de Souza,Raphael Gomes de Souza,Jordan Martins,Clemencia Mora Herrera,Luiz Mundim,Helio Nogima,Joao Pedro Pinheiro,Alberto Santoro,Andre Sznajder,Mauricio Thiel,Antonio Vilela Pereira,Cesar Augusto Bernardes,Luigi Calligaris,Thiago Tomei,Eduardo de Moraes Gregores,Pedro G Mercadante,Sergio F Novaes,Breno Orzari,Sandra Padula,Aleksandar Aleksandrov,Georgy Antchev,Roumyana Hadjiiska,Plamen Iaydjiev,Milena Misheva,Mariana Shopova,Georgi Sultanov,Anton Dimitrov,Leander Litov,Borislav Pavlov,Peicho Petkov,Anton Petrov,Elton Shumka,Sumit Keshri,Shalini Thakur,Tongguang Cheng,Tahir Javaid,Li Yuan,Zhen Hu,Jinfeng Liu,Kai Yi,Guo-Ming Chen,He-Sheng Chen,Mingshui Chen,Fabio Iemmi,Chun-Hua Jiang,Anshul Kapoor,Hongbo Liao,Zhenan Liu,Ramkrishna Sharma,Jia-Ning Song,Junquan Tao,Chu Wang,Jin Wang

Journal

arXiv preprint arXiv:2403.01313

Published Date

2024/3/19

The top quark mass is one of the most intriguing parameters of the standard model (SM). Its value indicates a Yukawa coupling close to unity, and the resulting strong ties to the Higgs physics make the top quark mass a crucial ingredient for understanding essential aspects of the electroweak sector of the SM. While it is such an important parameter of the SM, its measurement and interpretation in terms of the Lagrangian parameter are challenging. The CMS Collaboration has performed multiple measurements of the top quark mass, addressing these challenges from different angles: highly precise `direct' measurements, using the top quark decay products, as well as `indirect' measurements aiming at accurate interpretations in terms of the Lagrangian parameter. Recent mass measurements using Lorentz-boosted top quarks are particularly promising, opening a new avenue of measurements based on top quark decay products contained in a single particle jet, with superior prospects for accurate theoretical interpretations. Moreover, dedicated studies of the dominant uncertainties in the modelling of the signal processes have been performed. This review offers the first comprehensive overview of these measurements performed by the CMS Collaboration using the data collected at centre-of-mass energies of 7, 8, and 13 TeV.

Search for Inelastic Dark Matter in Events with Two Displaced Muons and Missing Transverse Momentum in Proton-Proton Collisions at s= 13 TeV

Authors

Aram Hayrapetyan,Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,Alberto Escalante Del Valle,Priya Sajid Hussain,Manfred Jeitler,Natascha Krammer,Dietrich Liko,Ivan Mikulec,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Mangesh Sonawane,Sebastian Templ,Wolfgang Waltenberger,Claudia-Elisabeth Wulz,Mohamed Rashad Darwish,Tahys Janssen,Pierre Van Mechelen,Emil Sørensen Bols,Jorgen D’Hondt,Soumya Dansana,Alexandre De Moor,Martin Delcourt,Hesham El Faham,Steven Lowette,Inna Makarenko,Alexander Morton,Denise Müller,Abanti Ranadhir Sahasransu,Stefaan Tavernier,Michael Tytgat,Senne Van Putte,David Vannerom,Barbara Clerbaux,Gilles De Lentdecker,Laurent Favart,Dmytro Hohov,Johny Jaramillo,Ali Khalilzadeh,Kyeongpil Lee,Mostafa Mahdavikhorrami,Andrea Malara,Santiago Paredes,Laurent Pétré,Nicolas Postiau,Laurent Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,M De Coen,D Dobur,J Knolle,L Lambrecht,G Mestdach,C Rendón,A Samalan,K Skovpen,N Van Den Bossche,L Wezenbeek,A Benecke,G Bruno,C Caputo,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,V Lemaitre,J Lidrych,P Mastrapasqua,K Mondal,TT Tran,S Wertz,GA Alves,E Coelho,C Hensel,T Menezes De Oliveira,A Moraes,P Rebello Teles,M Soeiro,WL Aldá Júnior,M Alves Gallo Pereira,Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,S Fonseca De Souza,J Martins,C Mora Herrera,K Mota Amarilo,L Mundim,H Nogima,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,A Vilela Pereira,CA Bernardes,L Calligaris,TR Tomei,EM Gregores,PG Mercadante,SF Novaes,B Orzari,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,E Shumka,S Keshri,S Thakur,T Cheng,Q Guo,T Javaid,M Mittal,L Yuan,G Bauer,Z Hu,K Yi,GM Chen,HS Chen,M Chen,F Iemmi,CH Jiang,A Kapoor,H Liao,ZA Liu,F Monti,R Sharma,JN Song,J Tao

Journal

Physical Review Letters

Published Date

2024/1/23

A search for dark matter in events with a displaced nonresonant muon pair and missing transverse momentum is presented. The analysis is performed using an integrated luminosity of 138 fb− 1 of proton-proton (p p) collision data at a center-of-mass energy of 13 TeV produced by the LHC in 2016–2018. No significant excess over the predicted backgrounds is observed. Upper limits are set on the product of the inelastic dark matter production cross section σ (p p→ A′→ χ 1 χ 2) and the decay branching fraction B (χ 2→ χ 1 μ+ μ−), where A′ is a dark photon and χ 1 and χ 2 are states in the dark sector with near mass degeneracy. This is the first dedicated collider search for inelastic dark matter.

Constraints on anomalous Higgs boson couplings from its production and decay using the WW channel in proton-proton collisions at = 13 TeV

Authors

Aram Hayrapetyan,Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,Priya Sajid Hussain,Manfred Jeitler,Natascha Krammer,Ang Li,Dietrich Liko,Ivan Mikulec,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Mangesh Sonawane,Sebastian Templ,Wolfgang Waltenberger,Claudia-Elisabeth Wulz,Mohamed Rashad Darwish,Tahys Janssen,Pierre van Mechelen,Emil Sørensen Bols,Jorgen d'Hondt,Soumya Dansana,Alexandre de Moor,Martin Delcourt,Hesham El Faham,Steven Lowette,Inna Makarenko,Denise Müller,Abanti Ranadhir Sahasransu,Stefaan Tavernier,Michael Tytgat,Gerrit Patrick van Onsem,Senne van Putte,David Vannerom,Barbara Clerbaux,Aloke Kumar Das,Gilles de Lentdecker,Laurent Favart,Paraskevas Gianneios,Dmytro Hohov,Johny Jaramillo,Ali Khalilzadeh,Kyeongpil Lee,Mostafa Mahdavikhorrami,Andrea Malara,Santiago Paredes,Laurent Pétré,Nicolas Postiau,Laurent Thomas,Max Vanden Bemden,Pascal Vanlaer,Maarten de Coen,Didar Dobur,Yanwen Hong,Joscha Knolle,Luka Lambrecht,Gianny Mestdach,Kevin Mota Amarilo,César Rendón,Amrutha Samalan,Kirill Skovpen,Niels van den Bossche,Jan van der Linden,Liam Wezenbeek,Anna Benecke,Agni Bethani,Giacomo Bruno,Claudio Caputo,Christophe Delaere,Izzeddin Suat Donertas,Andrea Giammanco,Khawla Jaffel,Sandhya Jain,Vincent Lemaitre,Jindrich Lidrych,Paola Mastrapasqua,Kuntal Mondal,Tu Thong Tran,Sébastien Wertz,Gilvan Alves,Eduardo Coelho,Carsten Hensel,Thales Menezes de Oliveira,Arthur Moraes,Patricia Rebello Teles,Mariana Soeiro,Walter Luiz Aldá Júnior,Miguel Alves Gallo Pereira,Mapse Barroso Ferreira Filho,Helena Brandao Malbouisson,Wagner Carvalho,Jose Chinellato,Eliza Melo da Costa,Gustavo Gil da Silveira,Dilson de Jesus Damiao,Sandro Fonseca de Souza,Raphael Gomes de Souza,Jordan Martins,Clemencia Mora Herrera,Luiz Mundim,Helio Nogima,Joao Pedro Pinheiro,Alberto Santoro,Andre Sznajder,Mauricio Thiel,Antonio Vilela Pereira,Cesar Augusto Bernardes,Luigi Calligaris,Thiago Tomei,Eduardo de Moraes Gregores,Pedro G Mercadante,Sergio F Novaes,Breno Orzari,Sandra Padula,Aleksandar Aleksandrov,Georgy Antchev,Roumyana Hadjiiska,Plamen Iaydjiev,Milena Misheva,Mariana Shopova,Georgi Sultanov,Anton Dimitrov,Leander Litov,Borislav Pavlov,Peicho Petkov,Anton Petrov,Elton Shumka,Sumit Keshri,Shalini Thakur,Tongguang Cheng,Tahir Javaid,Li Yuan,Zhen Hu,Jinfeng Liu,Kai Yi,Guo-Ming Chen,He-Sheng Chen,Mingshui Chen,Fabio Iemmi,Chun-Hua Jiang,Anshul Kapoor,Hongbo Liao,Zhenan Liu,Ramkrishna Sharma,Jia-Ning Song

Journal

arXiv preprint arXiv:2403.00657

Published Date

2024/3/19

A study of the anomalous couplings of the Higgs boson to vector bosons, including -violation effects, has been conducted using its production and decay in the WW channel. This analysis is performed on proton-proton collision data collected with the CMS detector at the CERN LHC during 2016-2018 at a center-of-mass energy of 13 TeV, and corresponds to an integrated luminosity of 138 fb. The different-flavor dilepton (e) final state is analyzed, with dedicated categories targeting gluon fusion, electroweak vector boson fusion, and associated production with a W or Z boson. Kinematic information from associated jets is combined using matrix element techniques to increase the sensitivity to anomalous effects at the production vertex. A simultaneous measurement of four Higgs boson couplings to electroweak vector bosons is performed in the framework of a standard model effective field theory. All measurements are consistent with the expectations for the standard model Higgs boson and constraints are set on the fractional contribution of the anomalous couplings to the Higgs boson production cross section.

Test of lepton flavor universality in and decays in proton-proton collisions at 13 TeV

Authors

Aram Hayrapetyan,Robin Erbacher,Camilo Andres Carrillo Montoya,Dave M Newbold,Wagner Carvalho,Nimmitha Karunarathna,Maciej Górski,Manuel Sommerhalder,Cole Lindsey,Nukulsinh Parmar,Balazs Ujvari,Ayse Polatoz,Anna Tsatsos,Elton Shumka,Alfredo Gurrola,Anne-Marie Magnan,Roumyana Hadjiiska,Ian Laflotte,Ian Mcalister,Willard Johns,Ludivine Ceard,Pierre Van Hove,Mohammad Alhusseini,Alberto Orso Maria Iorio,Ulrich Heintz,Giuseppe Latino,Andrew Hart,Robin Hofsaess,Federico Vazzoler,Sinan Sagir,Changgi Huh,Georgios Tsipolitis,Joseph Lynn Dulemba,Sanghyun Ko,Dylan Apparu,Soureek Mitra,Sergei Slabospitskii,Shamik Ghosh,Michael Tytgat,Robert Schöfbeck,Julia Vazquez Escobar,James Hirschauer,Andreas Nürnberg,Ho Fung Tsoi,Reza Goldouzian,Victor Golovtcov,Ram Krishna Dewanjee,Chiara Rovelli,Eliza Melo Da Costa,Daniele Fasanella,Polina Simkina,Vipin Bhatnagar,Zhen Hu,Konstantin Sharko,Hans Reithler,Austin Baty,Soumya Mukherjee,Tomas Lindén,Jonathon Langford,Graham Wilson,Younghoon Lee,William Tabb,Elena Popova,Furkan Dolek,Attilio Santocchia,Sergio Sánchez Navas,Manuel Calderon De La Barca Sanchez,Wolfram Dietrich Zeuner,Hesham El Faham,Jithin Madhusudanan Sreekala,Raphael Granier de Cassagnac,Georgios Daskalakis,Kin Ho Lo,Axel Buchot Perraguin,Andrés Abreu,Ernesto Migliore,Alexander Zotz,Tilman Rohe,Paul Schütze,Ece Asilar,Salvatore Nuzzo,Grace Cummings,Florian Joel J Bury,Gurkan Karaman,Henri Petrow,Jonathan Guiang,Kai-Feng Chen,Matthew Nguyen,Liam Brennan,Irene Dutta,Giorgio Apollinari,Michael Oshiro,Damir Lelas,Gillian Kopp,Michel Della Negra,Amitabh Lath,Daria Selivanova,Klitos Savva,Alexander Pauls,Martijn Mulders,Fabrizio Palla,Nikolas Pervan,Lorenzo Uplegger,Marina Kolosova,Sunil Bansal,Roberval Walsh,Hugo Becerril Gonzalez,Vladimir Makarenko,Christopher Palmer,Kristan Allan Hahn,Tao Huang,Olmo Cerri,George Stephans,Siqi Yuan,Kimmo Tuomas Samuli Kallonen,Olena Karacheban,Alicia Calderon,Tyler Lam,Kevin Black,Thomas Kress,Georgia Karapostoli,Samuel Lascio,Fotios Ptochos,Berkan Kaynak,Wei Wei,Achille Petrilli,Diogo Bastos,Bhargav Madhusudan Joshi,Abhishikth Mallampalli,Chenfeng Lu,Maria Cepeda,Mauricio Thiel,Bingran Wang,J William Gary,Dylan Blend,Cécile Caillol,Yannik Rath,Krisztina Márton,Nihar Ranjan Saha,Orgho Neogi,Mohammed Mahmoud,Peicho Petkov,John Rotter,Davide Piccolo,Florian Rehm,Pawel de Barbaro,Vaia Papadimitriou,Robert White,Nural Akchurin,Patrice Verdier

Published Date

2024/1/12

A test of lepton flavor universality in and decays, as well as a measurement of differential and integrated branching fractions of a nonresonant decay are presented. The analysis is made possible by a dedicated data set of proton-proton collisions at 13 TeV recorded in 2018, by the CMS experiment at the LHC, using a special high-rate data stream designed for collecting about 10 billion unbiased b hadron decays. The ratio of the branching fractions to is determined from the measured double ratio of these decays to the respective branching fractions of the with and decays, which allow for significant cancellation of systematic uncertainties. The ratio is measured in the range 1.16.0 GeV , where is the invariant mass of the lepton pair, and is found to be 0.78, in agreement with the standard model expectation 1. This measurement is limited by the statistical precision of the electron channel. The integrated branching fraction in the same range, (12.420.68) 10, is consistent with the present world-average value and has a comparable precision.

Portable acceleration of CMS computing workflows with coprocessors as a service

Authors

Aram Hayrapetyan,Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,Priya Sajid Hussain,Manfred Jeitler,Natascha Krammer,Ang Li,Dietrich Liko,Ivan Mikulec,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Mangesh Sonawane,Sebastian Templ,Wolfgang Waltenberger,Claudia-Elisabeth Wulz,Mohamed Rashad Darwish,Tahys Janssen,Pierre van Mechelen,Emil Sørensen Bols,Jorgen d'Hondt,Soumya Dansana,Alexandre de Moor,Martin Delcourt,Hesham El Faham,Steven Lowette,Inna Makarenko,Denise Müller,Abanti Ranadhir Sahasransu,Stefaan Tavernier,Michael Tytgat,Gerrit Patrick van Onsem,Senne van Putte,David Vannerom,Barbara Clerbaux,Aloke Kumar Das,Gilles de Lentdecker,Laurent Favart,Paraskevas Gianneios,Dmytro Hohov,Johny Jaramillo,Ali Khalilzadeh,Fakhri Alam Khan,Kyeongpil Lee,Mostafa Mahdavikhorrami,Andrea Malara,Santiago Paredes,Laurent Thomas,Max Vanden Bemden,Pascal Vanlaer,Maarten de Coen,Didar Dobur,Yanwen Hong,Joscha Knolle,Luka Lambrecht,Gianny Mestdach,Kevin Mota Amarilo,César Rendón,Amrutha Samalan,Kirill Skovpen,Niels van den Bossche,Jan van der Linden,Liam Wezenbeek,Anna Benecke,Agni Bethani,Giacomo Bruno,Claudio Caputo,Christophe Delaere,Izzeddin Suat Donertas,Andrea Giammanco,Khawla Jaffel,Sandhya Jain,Vincent Lemaitre,Jindrich Lidrych,Paola Mastrapasqua,Kuntal Mondal,Tu Thong Tran,Sébastien Wertz,Gilvan Alves,Eduardo Coelho,Carsten Hensel,Thales Menezes de Oliveira,Arthur Moraes,Patricia Rebello Teles,Mariana Soeiro,Walter Luiz Aldá Júnior,Miguel Alves Gallo Pereira,Mapse Barroso Ferreira Filho,Helena Brandao Malbouisson,Wagner Carvalho,Jose Chinellato,Eliza Melo da Costa,Gustavo Gil da Silveira,Dilson de Jesus Damiao,Sandro Fonseca de Souza,Raphael Gomes de Souza,Jordan Martins,Clemencia Mora Herrera,Luiz Mundim,Helio Nogima,Joao Pedro Pinheiro,Alberto Santoro,Andre Sznajder,Mauricio Thiel,Antonio Vilela Pereira,Cesar Augusto Bernardes,Luigi Calligaris,Thiago Tomei,Eduardo de Moraes Gregores,Pedro G Mercadante,Sergio F Novaes,Breno Orzari,Sandra Padula,Aleksandar Aleksandrov,Georgy Antchev,Roumyana Hadjiiska,Plamen Iaydjiev,Milena Misheva,Mariana Shopova,Georgi Sultanov,Anton Dimitrov,Leander Litov,Borislav Pavlov,Peicho Petkov,Anton Petrov,Elton Shumka,Sumit Keshri,Shalini Thakur,Tongguang Cheng,Tahir Javaid,Li Yuan,Zhen Hu,Jinfeng Liu,Kai Yi,Guo-Ming Chen,He-Sheng Chen,Mingshui Chen,Fabio Iemmi,Chun-Hua Jiang,Anshul Kapoor,Hongbo Liao,Zhenan Liu,Ramkrishna Sharma,Jia-Ning Song,Junquan Tao

Published Date

2024/2/27

Computing demands for large scientific experiments, such as the CMS experiment at the CERN LHC, will increase dramatically in the next decades. To complement the future performance increases of software running on central processing units (CPUs), explorations of coprocessor usage in data processing hold great potential and interest. Coprocessors are a class of computer processors that supplement CPUs, often improving the execution of certain functions due to architectural design choices. We explore the approach of Services for Optimized Network Inference on Coprocessors (SONIC) and study the deployment of this as-a-service approach in large-scale data processing. In the studies, we take a data processing workflow of the CMS experiment and run the main workflow on CPUs, while offloading several machine learning (ML) inference tasks onto either remote or local coprocessors, specifically graphics processing units (GPUs). With experiments performed at Google Cloud, the Purdue Tier-2 computing center, and combinations of the two, we demonstrate the acceleration of these ML algorithms individually on coprocessors and the corresponding throughput improvement for the entire workflow. This approach can be easily generalized to different types of coprocessors and deployed on local CPUs without decreasing the throughput performance. We emphasize that the SONIC approach enables high coprocessor usage and enables the portability to run workflows on different types of coprocessors.

A search for bottom-type vector-like quark pair production in dileptonic and fully hadronic final states in proton-proton collisions at = 13 TeV

Authors

Aram Hayrapetyan,Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,Priya Sajid Hussain,Manfred Jeitler,Natascha Krammer,Ang Li,Dietrich Liko,Ivan Mikulec,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Mangesh Sonawane,Sebastian Templ,Wolfgang Waltenberger,Claudia-Elisabeth Wulz,Mohamed Rashad Darwish,Tahys Janssen,Pierre van Mechelen,Emil Sørensen Bols,Jorgen d'Hondt,Soumya Dansana,Alexandre de Moor,Martin Delcourt,Hesham El Faham,Steven Lowette,Inna Makarenko,Denise Müller,Abanti Ranadhir Sahasransu,Stefaan Tavernier,Michael Tytgat,Gerrit Patrick van Onsem,Senne van Putte,David Vannerom,Barbara Clerbaux,Aloke Kumar Das,Gilles de Lentdecker,Laurent Favart,Dmytro Hohov,Johny Jaramillo,Ali Khalilzadeh,Kyeongpil Lee,Mostafa Mahdavikhorrami,Andrea Malara,Santiago Paredes,Laurent Pétré,Nicolas Postiau,Laurent Thomas,Max Vanden Bemden,Pascal Vanlaer,Maarten de Coen,Didar Dobur,Yanwen Hong,Joscha Knolle,Luka Lambrecht,Gianny Mestdach,Kevin Mota Amarilo,César Rendón,Amrutha Samalan,Kirill Skovpen,Niels van den Bossche,Jan van der Linden,Liam Wezenbeek,Anna Benecke,Agni Bethani,Giacomo Bruno,Claudio Caputo,Christophe Delaere,Izzeddin Suat Donertas,Andrea Giammanco,Khawla Jaffel,Sandhya Jain,Vincent Lemaitre,Jindrich Lidrych,Paola Mastrapasqua,Kuntal Mondal,Tu Thong Tran,Sébastien Wertz,Gilvan Alves,Eduardo Coelho,Carsten Hensel,Thales Menezes de Oliveira,Arthur Moraes,Patricia Rebello Teles,Mariana Soeiro,Walter Luiz Aldá Júnior,Miguel Alves Gallo Pereira,Mapse Barroso Ferreira Filho,Helena Brandao Malbouisson,Wagner Carvalho,Jose Chinellato,Eliza Melo da Costa,Gustavo Gil da Silveira,Dilson de Jesus Damiao,Sandro Fonseca de Souza,Raphael Gomes de Souza,Jordan Martins,Clemencia Mora Herrera,Luiz Mundim,Helio Nogima,Alberto Santoro,Andre Sznajder,Mauricio Thiel,Antonio Vilela Pereira,Cesar Augusto Bernardes,Luigi Calligaris,Thiago Tomei,Eduardo de Moraes Gregores,Pedro G Mercadante,Sergio F Novaes,Breno Orzari,Sandra Padula,Aleksandar Aleksandrov,Georgy Antchev,Roumyana Hadjiiska,Plamen Iaydjiev,Milena Misheva,Mariana Shopova,Georgi Sultanov,Anton Dimitrov,Leander Litov,Borislav Pavlov,Peicho Petkov,Anton Petrov,Elton Shumka,Sumit Keshri,Shalini Thakur,Tongguang Cheng,Qianying Guo,Tahir Javaid,Li Yuan,Zhen Hu,Jinfeng Liu,Kai Yi,Guo-Ming Chen,He-Sheng Chen,Mingshui Chen,Fabio Iemmi,Chun-Hua Jiang,Anshul Kapoor,Hongbo Liao,Zhenan Liu,Ramkrishna Sharma,Jia-Ning Song,Junquan Tao

Published Date

2024/2/27

A search is described for the production of a pair of bottom-type vector-like quarks (B VLQs) with mass greater than 1000 GeV. Each B VLQ decays into a b quark and a Higgs boson, a b quark and a Z boson, or a t quark and a W boson. This analysis considers both fully hadronic final states and those containing a charged lepton pair from a Z boson decay. The products of the H bb boson decay and of the hadronic Z or W boson decays can be resolved as two distinct jets or merged into a single jet, so the final states are classified by the number of reconstructed jets. The analysis uses data corresponding to an integrated luminosity of 138 fb collected in proton-proton collisions at = 13 TeV with the CMS detector at the LHC from 2016 to 2018. No excess over the expected background is observed. Lower limits are set on the B VLQ mass at 95% confidence level. These depend on the B VLQ branching fractions and are 1570 and 1540 GeV for 100% B bH and 100% B bZ, respectively. In most cases, the mass limits obtained exceed previous limits by at least 100 GeV.

Measurement of the τ lepton polarization in Z boson decays in proton-proton collisions at = 13 TeV

Authors

Aram Hayrapetyan,Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,Alberto Escalante Del Valle,Priya Sajid Hussain,Manfred Jeitler,Natascha Krammer,Dietrich Liko,Ivan Mikulec,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Mangesh Sonawane,Sebastian Templ,Wolfgang Waltenberger,C-E Wulz,Mohamed Rashad Darwish,Tahys Janssen,Pierre Van Mechelen,Emil Sørensen Bols,Jorgen D’Hondt,Soumya Dansana,Alexandre De Moor,Martin Delcourt,Hesham El Faham,Steven Lowette,Inna Makarenko,Denise Müller,Abanti Ranadhir Sahasransu,Stefaan Tavernier,Michael Tytgat,Senne Van Putte,David Vannerom,Barbara Clerbaux,Gilles De Lentdecker,Laurent Favart,Dmytro Hohov,Johny Jaramillo,Ali Khalilzadeh,Kyeongpil Lee,Mostafa Mahdavikhorrami,Andrea Malara,Santiago Paredes,Laurent Pétré,Nicolas Postiau,Laurent Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,M De Coen,D Dobur,Y Hong,J Knolle,L Lambrecht,G Mestdach,C Rendón,A Samalan,K Skovpen,N Van Den Bossche,L Wezenbeek,A Benecke,G Bruno,C Caputo,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,V Lemaitre,J Lidrych,P Mastrapasqua,K Mondal,TT Tran,S Wertz,GA Alves,E Coelho,C Hensel,T Menezes De Oliveira,A Moraes,P Rebello Teles,M Soeiro,WL Aldá Júnior,M Alves Gallo Pereira,Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,S Fonseca De Souza,J Martins,C Mora Herrera,K Mota Amarilo,L Mundim,H Nogima,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,PG Mercadante,SF Novaes,B Orzari,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,E Shumka,S Keshri,S Thakur,T Cheng,Q Guo,T Javaid,M Mittal,L Yuan,G Bauer,Z Hu,K Yi,GM Chen,HS Chen,M Chen,F Iemmi,CH Jiang,A Kapoor,H Liao,Z-A Liu,F Monti,R Sharma,JN Song,J Tao

Journal

Journal of High Energy Physics

Published Date

2024/1

The polarization of τ leptons is measured using leptonic and hadronic τ lepton decays in Z→ τ+ τ− events in proton-proton collisions at= 13 TeV recorded by CMS at the CERN LHC with an integrated luminosity of 36.3 fb− 1. The measured τ− lepton polarization at the Z boson mass pole is=− 0.144±0.006 (stat)±0.014 (syst)=− 0.144±0.015, in good agreement with the measurement of the τ lepton asymmetry parameter of A τ= 0.1439±0.0043= at LEP. The τ lepton polarization depends on the ratio of the vector to axial-vector couplings of the τ leptons in the neutral current expression, and thus on the effective weak mixing angle sin 2, independently of the Z boson production mechanism. The obtained value sin 2= 0.2319±0. 0008 (stat)±0. 0018 (syst)= 0. 2319±0. 0019 is in good agreement with measurements at e+ e− colliders.

Performance of the CMS electromagnetic calorimeter in pp collisions at = 13 TeV

Authors

Aram Hayrapetyan,Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,Alberto Escalante del Valle,Priya Sajid Hussain,Manfred Jeitler,Natascha Krammer,Dietrich Liko,Ivan Mikulec,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Mangesh Sonawane,Sebastian Templ,Wolfgang Waltenberger,Claudia-Elisabeth Wulz,Mohamed Rashad Darwish,Tahys Janssen,Pierre van Mechelen,Emil Sørensen Bols,Jorgen d'Hondt,Soumya Dansana,Alexandre de Moor,Martin Delcourt,Hesham El Faham,Steven Lowette,Inna Makarenko,Denise Müller,Abanti Ranadhir Sahasransu,Stefaan Tavernier,Michael Tytgat,Senne van Putte,David Vannerom,Barbara Clerbaux,Gilles de Lentdecker,Laurent Favart,Dmytro Hohov,Johny Jaramillo,Ali Khalilzadeh,Kyeongpil Lee,Mostafa Mahdavikhorrami,Andrea Malara,Santiago Paredes,Laurent Pétré,Nicolas Postiau,Laurent Thomas,Max Vanden Bemden,Pascal Vanlaer,Maarten de Coen,Didar Dobur,Yanwen Hong,Joscha Knolle,Luka Lambrecht,Gianny Mestdach,César Rendón,Amrutha Samalan,Kirill Skovpen,Niels van den Bossche,Liam Wezenbeek,Anna Benecke,Giacomo Bruno,Claudio Caputo,Christophe Delaere,Izzeddin Suat Donertas,Andrea Giammanco,Khawla Jaffel,Sandhya Jain,Vincent Lemaitre,Jindrich Lidrych,Paola Mastrapasqua,Kuntal Mondal,Tu Thong Tran,Sébastien Wertz,Gilvan Alves,Eduardo Coelho,Carsten Hensel,Thales Menezes de Oliveira,Arthur Moraes,Patricia Rebello Teles,Mariana Soeiro,Walter Luiz Aldá Júnior,Miguel Alves Gallo Pereira,Mapse Barroso Ferreira Filho,Helena Brandao Malbouisson,Wagner Carvalho,Jose Chinellato,Eliza Melo da Costa,Gustavo Gil da Silveira,Dilson de Jesus Damiao,Sandro Fonseca de Souza,Jordan Martins,Clemencia Mora Herrera,Kevin Mota Amarilo,Luiz Mundim,Helio Nogima,Alberto Santoro,Sheila Mara Silva Do Amaral,Andre Sznajder,Mauricio Thiel,Antonio Vilela Pereira,Cesar Augusto Bernardes,Luigi Calligaris,Thiago Tomei,Eduardo de Moraes Gregores,Pedro G Mercadante,Sergio F Novaes,Breno Orzari,Sandra Padula,Aleksandar Aleksandrov,Georgy Antchev,Roumyana Hadjiiska,Plamen Iaydjiev,Milena Misheva,Mariana Shopova,Georgi Sultanov,Anton Dimitrov,Todor Ivanov,Leander Litov,Borislav Pavlov,Peicho Petkov,Anton Petrov,Elton Shumka,Sumit Keshri,Shalini Thakur,Tongguang Cheng,Qianying Guo,Tahir Javaid,Monika Mittal,Li Yuan,Gerry Bauer,Zhen Hu,Kai Yi,Guo-Ming Chen,He-Sheng Chen,Mingshui Chen,Fabio Iemmi,Chun-Hua Jiang,Anshul Kapoor,Hongbo Liao,Zhenan Liu,Fabio Monti,Ramkrishna Sharma,Jia-Ning Song,Junquan Tao,Chu Wang

Journal

arXiv preprint arXiv:2403.15518

Published Date

2024/4/2

The operation and performance of the Compact Muon Solenoid (CMS) electromagnetic calorimeter (ECAL) are presented, based on data collected in pp collisions at = 13 TeV at the CERN LHC, in the years from 2015 to 2018 (LHC Run 2), corresponding to an integrated luminosity of 151 fb. The CMS ECAL is a scintillating lead-tungstate crystal calorimeter, with a silicon strip preshower detector in the forward region that provides precise measurements of the energy and the time-of-arrival of electrons and photons. The successful operation of the ECAL is crucial for a broad range of physics goals, ranging from observing the Higgs boson and measuring its properties, to other standard model measurements and searches for new phenomena. Precise calibration, alignment, and monitoring of the ECAL response are important ingredients to achieve these goals. To face the challenges posed by the higher luminosity, which characterized the operation of the LHC in Run 2, the procedures established during the 2011-2012 run of the LHC have been revisited and new methods have been developed for the energy measurement and for the ECAL calibration. The energy resolution of the calorimeter, for electrons from Z boson decays reaching the ECAL without significant loss of energy by bremsstrahlung, was better than 1.8%, 3.0%, and 4.5% in the $\lvert\eta\rvert$ intervals [0.0,0.8], [0.8,1.5], [1.5, 2.5], respectively. This resulting performance is similar to that achieved during Run 1 in 2011-2012, in spite of the more severe running conditions.

Two-particle Bose-Einstein correlations and their Lévy parameters in PbPb collisions at TeV

Authors

Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,A Escalante Del Valle,Priya Sajid Hussain,Manfred Jeitler,Natascha Krammer,Lukas Lechner,Dietrich Liko,Ivan Mikulec,Peter Paulitsch,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Mangesh Sonawane,Sebastian Templ,Wolfgang Waltenberger,C-E Wulz,Mohamed Rashad Darwish,Tahys Janssen,Tomas Kello,H Rejeb Sfar,Pierre Van Mechelen,Emil Sørensen Bols,Jorgen d'Hondt,Alexandre De Moor,Martin Delcourt,Hesham El Faham,Steven Lowette,Alexander Morton,Denise Müller,Abanti Ranadhir Sahasransu,Stefaan Tavernier,Walter Van Doninck,Senne Van Putte,David Vannerom,Barbara Clerbaux,Soumya Dansana,Gilles De Lentdecker,Laurent Favart,Dmytro Hohov,Johny Jaramillo,Kyeongpil Lee,Mostafa Mahdavikhorrami,Inna Makarenko,Andrea Malara,Santiago Paredes,Laurent Pétré,Nicolas Postiau,Laurent Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,D Dobur,J Knolle,L Lambrecht,G Mestdach,C Rendón,A Samalan,K Skovpen,M Tytgat,N Van Den Bossche,B Vermassen,L Wezenbeek,A Benecke,G Bruno,F Bury,C Caputo,P David,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,V Lemaitre,K Mondal,A Taliercio,TT Tran,P Vischia,S Wertz,GA Alves,E Coelho,C Hensel,A Moraes,P Rebello Teles,WL Aldá Júnior,M Alves Gallo Pereira,M Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,V Dos Santos Sousa,S Fonseca De Souza,J Martins,C Mora Herrera,K Mota Amarilo,L Mundim,H Nogima,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,PG Mercadante,SF Novaes,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,E Shumka,S Thakur,T Cheng,T Javaid,M Mittal,L Yuan,M Ahmad,G Bauer,Z Hu,S Lezki,K Yi,GM Chen,HS Chen,M Chen,F Iemmi,CH Jiang,A Kapoor,H Liao,Z-A Liu

Journal

Physical Review C

Published Date

2024/2/23

Two-particle Bose–Einstein momentum correlation functions are studied for charged-hadron pairs in lead-lead collisions at a center-of-mass energy per nucleon pair of s NN= 5.02 TeV. The data sample, containing 4.27× 10 9 minimum bias events corresponding to an integrated luminosity of 0.607 nb− 1, was collected by the CMS experiment in 2018. The experimental results are discussed in terms of a Lévy-type source distribution. The parameters of this distribution are extracted as functions of particle pair average transverse mass and collision centrality. These parameters include the Lévy index or shape parameter α, the Lévy scale parameter R, and the correlation strength parameter λ. The source shape, characterized by α, is found to be neither Cauchy nor Gaussian, implying the need for a full Lévy analysis. Similarly to what was previously found for systems characterized by Gaussian source radii, a …

Enriching the physics program of the CMS experiment via data scouting and data parking

Authors

Aram Hayrapetyan,Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,Priya Sajid Hussain,Manfred Jeitler,Natascha Krammer,Ang Li,Dietrich Liko,Ivan Mikulec,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Mangesh Sonawane,Sebastian Templ,Wolfgang Waltenberger,Claudia-Elisabeth Wulz,Mohamed Rashad Darwish,Tahys Janssen,Pierre van Mechelen,Nordin Breugelmans,Jorgen d'Hondt,Soumya Dansana,Alexandre de Moor,Martin Delcourt,Felix Heyen,Steven Lowette,Inna Makarenko,Denise Müller,Stefaan Tavernier,Michael Tytgat,Gerrit Patrick van Onsem,Senne van Putte,David Vannerom,Barbara Clerbaux,Aloke Kumar Das,Gilles de Lentdecker,Hugues Evard,Laurent Favart,Paraskevas Gianneios,Dmytro Hohov,Johny Jaramillo,Ali Khalilzadeh,Fakhri Alam Khan,Kyeongpil Lee,Mostafa Mahdavikhorrami,Andrea Malara,Santiago Paredes,Muhammad Aamir Shahzad,Laurent Thomas,Max Vanden Bemden,Pascal Vanlaer,Maarten de Coen,Didar Dobur,Gul Gokbulut,Yanwen Hong,Joscha Knolle,Luka Lambrecht,David Marckx,Gianny Mestdach,Kevin Mota Amarilo,Amrutha Samalan,Kirill Skovpen,Niels van den Bossche,Jan van der Linden,Liam Wezenbeek,Anna Benecke,Agni Bethani,Giacomo Bruno,Claudio Caputo,Jerome de Favereau de Jeneret,Christophe Delaere,Izzeddin Suat Donertas,Andrea Giammanco,Ahmet Oguz Guzel,Sandhya Jain,Vincent Lemaitre,Jindrich Lidrych,Paola Mastrapasqua,Tu Thong Tran,Sébastien Wertz,Gilvan Alves,Miguel Alves Gallo Pereira,Eduardo Coelho,Gilson Correia Silva,Carsten Hensel,Thales Menezes de Oliveira,Arthur Moraes,Patricia Rebello Teles,Mariana Soeiro,Antonio Vilela Pereira,Walter Luiz Aldá Júnior,Mapse Barroso Ferreira Filho,Helena Brandao Malbouisson,Wagner Carvalho,Jose Chinellato,Eliza Melo da Costa,Gustavo Gil da Silveira,Dilson de Jesus Damiao,Sandro Fonseca de Souza,Raphael Gomes de Souza,Matheus Macedo,Jordan Martins,Clemencia Mora Herrera,Luiz Mundim,Helio Nogima,Joao Pedro Pinheiro,Alberto Santoro,Andre Sznajder,Mauricio Thiel,Cesar Augusto Bernardes,Luigi Calligaris,Thiago Tomei,Eduardo de Moraes Gregores,Isabela Maietto Silverio,Pedro G Mercadante,Sergio F Novaes,Breno Orzari,Sandra Padula,Aleksandar Aleksandrov,Georgy Antchev,Roumyana Hadjiiska,Plamen Iaydjiev,Milena Misheva,Mariana Shopova,Georgi Sultanov,Anton Dimitrov,Leander Litov,Borislav Pavlov,Peicho Petkov,Anton Petrov,Elton Shumka,Sumit Keshri,Shalini Thakur,Tongguang Cheng,Tahir Javaid,Li Yuan,Zhen Hu,Zhengchen Liang,Jinfeng Liu,Kai Yi,Guo-Ming Chen,He-Sheng Chen,Mingshui Chen,Fabio Iemmi,Chun-Hua Jiang

Published Date

2024/4/2

Specialized data-taking and data-processing techniques were introduced by the CMS experiment in Run 1 of the CERN LHC to enhance the sensitivity of searches for new physics and the precision of standard model measurements. These techniques, termed data scouting and data parking, extend the data-taking capabilities of CMS beyond the original design specifications. The novel data-scouting strategy trades complete event information for higher event rates, while keeping the data bandwidth within limits. Data parking involves storing a large amount of raw detector data collected by algorithms with low trigger thresholds to be processed when sufficient computational power is available to handle such data. The research program of the CMS Collaboration is greatly expanded with these techniques. The implementation, performance, and physics results obtained with data scouting and data parking in CMS over the last decade are discussed in this Report, along with new developments aimed at further improving low-mass physics sensitivity over the next years of data taking.

Search for CP violation using (Formula presented.) events in the lepton+ jets channel in pp collisions at√ s= 13 TeV

Authors

A Tumasyan,W Adam,JW Andrejkovic,T Bergauer,S Chatterjee,K Damanakis,M Dragicevic,A Escalante Del Valle,R Frühwirth,M Jeitler,N Krammer,L Lechner,D Liko,I Mikulec,P Paulitsch,FM Pitters,J Schieck,R Schöfbeck,D Schwarz,S Templ,W Waltenberger,C-E Wulz,MR Darwish,EA De Wolf,T Janssen,T Kello,A Lelek,H Rejeb Sfar,P Van Mechelen,S Van Putte,ES Bols,J D’Hondt,A De Moor,M Delcourt,H El Faham,S Lowette,S Moortgat,A Morton,D Müller,AR Sahasransu,S Tavernier,W Van Doninck,D Vannerom,D Beghin,B Bilin,B Clerbaux,G De Lentdecker,L Favart,AK Kalsi,K Lee,M Mahdavikhorrami,I Makarenko,L Moureaux,S Paredes,L Pétré,A Popov,N Postiau,E Starling,L Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,T Cornelis,D Dobur,J Knolle,L Lambrecht,G Mestdach,M Niedziela,C Rendón,C Roskas,A Samalan,K Skovpen,M Tytgat,N Van Den Bossche,B Vermassen,L Wezenbeek,A Benecke,A Bethani,G Bruno,F Bury,C Caputo,P David,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,V Lemaitre,K Mondal,J Prisciandaro,A Taliercio,M Teklishyn,TT Tran,P Vischia,S Wertz,GA Alves,C Hensel,A Moraes,P Rebello Teles,WL Aldá Júnior,M Alves Gallo Pereira,Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,V Dos Santos Sousa,S Fonseca De Souza,C Mora Herrera,K Mota Amarilo,L Mundim,H Nogima,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,F Torres Da Silva De Araujo,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,DS Lemos,PG Mercadante,SF Novaes,Sandra Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,T Cheng,T Javaid,M Mittal,L Yuan,M Ahmad,G Bauer,C Dozen,Z Hu

Journal

Journal of High Energy Physics

Published Date

2023

Results are presented on a search for CP violation in the production and decay of top quark-antiquark pairs in the lepton+jets channel. The search is based on data from proton-proton collisions at s = 13 TeV, collected with the CMS detector, corresponding to an integrated luminosity of 138 fb−1. Possible CP violation effects are evaluated by measuring asymmetries in observables constructed from linearly independent four-momentum vectors of the final-state particles. The dimensionless chromoelectric dipole moment of the top quark obtained from the observed asymmetries is measured to be 0.04 ± 0.10 (stat) ± 0.07(syst), and the asymmetries exhibit no evidence for CP-violating effects, consistent with expectations from the standard model. [Figure not available: see fulltext.].

Strange hadron collectivity in pPb and PbPb collisions

Authors

Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Marko Dragicevic,Alberto Escalante Del Valle,Rudolf Fruehwirth,Manfred Jeitler,Natascha Krammer,Lukas Lechner,Dietrich Liko,Ivan Mikulec,Peter Paulitsch,Florian Michael Pitters,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Sebastian Templ,Wolfgang Waltenberger,C-E Wulz,Mohamed Rashad Darwish,Eddi A De Wolf,Tahys Janssen,Tomas Kello,Aleksandra Lelek,H Rejeb Sfar,Pierre Van Mechelen,Senne Van Putte,F Blekman,ES Bols,J D’Hondt,M Delcourt,H El Faham,S Lowette,S Moortgat,A Morton,D Müller,AR Sahasransu,S Tavernier,W Van Doninck,P Van Mulders,D Beghin,B Bilin,B Clerbaux,G De Lentdecker,L Favart,A Grebenyuk,AK Kalsi,K Lee,M Mahdavikhorrami,I Makarenko,L Moureaux,L Pétré,A Popov,N Postiau,E Starling,L Thomas,M Vanden Bemden,C Vander Velde,Pascal Vanlaer,Tom Cornelis,Didar Dobur,Joscha Knolle,Luka Lambrecht,Gianny Mestdach,Marek Niedziela,Christos Roskas,Amrutha Samalan,Kirill Skovpen,Michael Tytgat,Basile Vermassen,Martina Vit,Liam Wezenbeek,Anna Benecke,Agni Bethani,Giacomo Bruno,F Bury,Claudio Caputo,Pieter David,Christophe Delaere,Izzeddin Suat Donertas,Andrea Giammanco,Khawla Jaffel,Sa Jain,V Lemaitre,K Mondal,J Prisciandaro,A Taliercio,M Teklishyn,TT Tran,P Vischia,S Wertz,GA Alves,C Hensel,A Moraes,WL Aldá Júnior,M Alves Gallo Pereira,Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,S Fonseca De Souza,C Mora Herrera,Kevin Mota Amarilo,L Mundim,H Nogima,P Rebello Teles,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,F Torres Da Silva De Araujo,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,DS Lemos,PG Mercadante,SF Novaes,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,T Cheng,T Javaid,M Mittal,L Yuan,M Ahmad,G Bauer,C Dozen,Z Hu,J Martins,Y Wang,K Yi

Journal

Journal of High Energy Physics

Published Date

2023/5

The collective behavior of and strange hadrons is studied by measuring the elliptic azimuthal anisotropy (v 2) using the scalar-product and multiparticle correlation methods. Proton-lead (pPb) collisions at a nucleon-nucleon center-of-mass energy= 8. 16 TeV and lead-lead (PbPb) collisions at= 5. 02 TeV collected by the CMS experiment at the LHC are investigated. Nonflow effects in the pPb collisions are studied by using a subevent cumulant analysis and by excluding events where a jet with transverse momentum greater than 20 GeV is present. The strange hadron v 2 values extracted in pPb collisions via the four-and six-particle correlation method are found to be nearly identical, suggesting the collective behavior. Comparisons of the pPb and PbPb results for both strange hadrons and charged particles illustrate how event-by-event flow fluctuations depend on the system size.

Measurement of inclusive and differential cross sections for single top quark production in association with a W boson in proton-proton collisions at = 13 TeV

Authors

Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,Alberto Escalante Del Valle,Priya Sajid Hussain,Manfred Jeitler,Natascha Krammer,Lukas Lechner,Dietrich Liko,Ivan Mikulec,Peter Paulitsch,Florian Michael Pitters,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Sebastian Templ,Wolfgang Waltenberger,C-E Wulz,Mohamed Rashad Darwish,Tahys Janssen,Tomas Kello,H Rejeb Sfar,Pierre Van Mechelen,Emil Sørensen Bols,Jorgen D’Hondt,Alexandre De Moor,Martin Delcourt,Hesham El Faham,Steven Lowette,Seth Moortgat,Alexander Morton,Denise Müller,Abanti Ranadhir Sahasransu,Stefaan Tavernier,Walter Van Doninck,David Vannerom,Barbara Clerbaux,Gilles De Lentdecker,Laurent Favart,Dmytro Hohov,Johny Jaramillo,K Lee,Mostafa Mahdavikhorrami,Inna Makarenko,Andrea Malara,Santiago Paredes,Laurent Pétré,Nicolas Postiau,Laurent Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,Didar Dobur,Joscha Knolle,Luka Lambrecht,Gianny Mestdach,Marek Niedziela,Cesar Rendón,Christos Roskas,Amrutha Samalan,Kirill Skovpen,Michael Tytgat,Niels Van den Bossche,Basile Vermassen,Liam Wezenbeek,A Benecke,G Bruno,F Bury,C Caputo,P David,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,Vincent Lemaitre,Kuntal Mondal,Angela Taliercio,Tu Thong Tran,Pietro Vischia,Sébastien Wertz,GA Alves,Eduardo Coelho,Carsten Hensel,Arthur Moraes,P Rebello Teles,WL Aldá Júnior,M Alves Gallo Pereira,Barroso Ferreira Filho,H Brandao Malbouisson,Wagner Carvalho,Jose Chinellato,Eliza Melo Da Costa,Gustavo Gil Da Silveira,Dilson de Jesus Damiao,Vitor Dos Santos Sousa,S Fonseca De Souza,Jordan Martins,C Mora Herrera,Kevin Mota Amarilo,Luiz Mundim,Helio Nogima,Alberto Santoro,SM Silva Do Amaral,Andre Sznajder,Mauricio Thiel,F Torres Da Silva De Araujo,A Vilela Pereira,Cesar Augusto Bernardes,Luigi Calligaris,TR Fernandez Perez Tomei,EM Gregores,Pedro G Mercadante,Sergio F Novaes,Sandra S Padula,Aleksandar Aleksandrov,Georgy Antchev,Roumyana Hadjiiska,Plamen Iaydjiev,Milena Misheva,Mircho Rodozov,Mariana Shopova,Georgi Sultanov,Anton Dimitrov,Todor Ivanov,Leander Litov,Borislav Pavlov,Peicho Petkov,Anton Petrov,Elton Shumka,Shalini Thakur,Tongguang Cheng,Tahir Javaid,Monika Mittal,L Yuan,Muhammad Ahmad,Gerry Bauer,Zhen Hu,Samet Lezki,Kai Yi,Guo-Ming Chen,He-Sheng Chen,Mingshui Chen,Fabio Iemmi,Chun-Hua Jiang,Anshul Kapoor

Journal

Journal of High Energy Physics

Published Date

2023/7

Measurements of the inclusive and normalised differential cross sections are presented for the production of single top quarks in association with a W boson in proton-proton collisions at a centre-of-mass energy of 13 TeV. The data used were recorded with the CMS detector at the LHC during 2016–2018, and correspond to an integrated luminosity of 138 fb− 1. Events containing one electron and one muon in the final state are analysed. For the inclusive measurement, a multivariate discriminant, exploiting the kinematic properties of the events is used to separate the signal from the dominant background. A cross section of pb is obtained, consistent with the predictions of the standard model. For the differential measurements, a fiducial region is defined according to the detector acceptance, and the requirement of exactly one jet coming from the fragmentation of a bottom quark. The …

Search for long-lived particles using out-of-time trackless jets in proton-proton collisions at = 13 TeV

Authors

Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,Alberto Escalante Del Valle,Priya Sajid Hussain,Manfred Jeitler,Natascha Krammer,Lukas Lechner,Dietrich Liko,Ivan Mikulec,Peter Paulitsch,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Mangesh Sonawane,Sebastian Templ,Wolfgang Waltenberger,C-E Wulz,Mohamed Rashad Darwish,Tahys Janssen,Tomas Kello,H Rejeb Sfar,Pierre Van Mechelen,Emil Sørensen Bols,Jorgen D’Hondt,Alexandre De Moor,Martin Delcourt,Hesham El Faham,Steven Lowette,Alexander Morton,Denise Müller,Abanti Ranadhir Sahasransu,Stefaan Tavernier,Walter Van Doninck,Senne Van Putte,David Vannerom,Barbara Clerbaux,Gilles De Lentdecker,Laurent Favart,Dmytro Hohov,Johny Jaramillo,Kyeongpil Lee,Mostafa Mahdavikhorrami,Inna Makarenko,Andrea Malara,Santiago Paredes,Laurent Pétré,Nicolas Postiau,Laurent Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,Didar Dobur,Joscha Knolle,Luka Lambrecht,Gianny Mestdach,C Rendón,A Samalan,K Skovpen,M Tytgat,N Van Den Bossche,B Vermassen,L Wezenbeek,A Benecke,G Bruno,F Bury,C Caputo,P David,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,V Lemaitre,K Mondal,A Taliercio,TT Tran,P Vischia,S Wertz,GA Alves,E Coelho,C Hensel,A Moraes,P Rebello Teles,WL Aldá Júnior,M Alves Gallo Pereira,Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,V Dos Santos Sousa,S Fonseca De Souza,J Martins,C Mora Herrera,K Mota Amarilo,L Mundim,H Nogima,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,PG Mercadante,SF Novaes,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,E Shumka,S Thakur,T Cheng,T Javaid,M Mittal,L Yuan,M Ahmad,G Bauer,Z Hu,S Lezki,K Yi,GM Chen,HS Chen,M Chen,F Iemmi,CH Jiang,A Kapoor,H Liao,Z-A Liu,V Milosevic

Journal

Journal of High Energy Physics

Published Date

2023/7

A search for long-lived particles decaying in the outer regions of the CMS silicon tracker or in the calorimeters is presented. The search is based on a data sample of proton-proton collisions at= 13 TeV recorded with the CMS detector at the LHC in 2016–2018, corresponding to an integrated luminosity of 138 fb− 1. A novel technique, using nearly trackless and out-of-time jet information combined in a deep neural network discriminator, is employed to identify decays of long-lived particles. The results are interpreted in a simplified model of chargino-neutralino production, where the neutralino is the next-to-lightest supersymmetric particle, is long-lived, and decays to a gravitino and either a Higgs or Z boson. This search is most sensitive to neutralino proper decay lengths of approximately 0.5 m, for which masses up to 1.18 TeV are excluded at 95% confidence level. The current search is the best result to date in the …

Evaluation of planar silicon pixel sensors with the RD53A readout chip for the Phase-2 Upgrade of the CMS Inner Tracker

Authors

Wolfgang Adam,T Bergauer,K Damanakis,M Dragicevic,R Frühwirth,H Steininger,W Beaumont,MR Darwish,T Janssen,H Rejeb Sfar,P Van Mechelen,N Breugelmans,M Delcourt,A De Moor,J D'Hondt,F Heyen,S Lowette,I Makarenko,D Muller,AR Sahasransu,D Vannerom,S Van Putte,Y Allard,B Clerbaux,S Dansana,G De Lentdecker,H Evard,L Favart,D Hohov,A Khalilzadeh,K Lee,M Mahdavikhorrami,A Malara,S Paredes,N Postiau,F Robert,L Thomas,M Vanden Bemden,P Vanlaer,Y Yang,A Benecke,G Bruno,F Bury,C Caputo,J De Favereau,C Delaere,IS Donertas,A Giammanco,K Jaffel,S Jain,V Lemaitre,K Mondal,N Szilasi,TT Tran,S Wertz,V Brigljević,B Chitroda,D Ferenček,S Mishra,A Starodumov,T Šuša,E Brücken,T Lampén,L Martikainen,E Tuominen,A Karadzhinova-Ferrer,P Luukka,H Petrow,T Tuuva,J-L Agram,J Andrea,D Apparu,D Bloch,C Bonnin,J-M Brom,E Chabert,L Charles,C Collard,E Dangelser,S Falke,U Goerlach,L Gross,C Haas,M Krauth,N Ollivier-Henry,G Baulieu,A Bonnevaux,G Boudoul,L Caponetto,N Chanon,D Contardo,T Dupasquier,G Galbit,M Marchisone,L Mirabito,B Nodari,E Schibler,F Schirra,M Vander Donckt,S Viret,V Botta,C Ebisch,L Feld,W Karpinski,K Klein,M Lipinski,D Louis,D Meuser,I Özen,A Pauls,G Pierschel,N Röwert,M Teroerde,M Wlochal,C Dziwok,G Fluegge,O Pooth,A Stahl,T Ziemons,A Agah,S Bhattacharya,F Blekman,A Campbell,A Cardini,C Cheng,S Consuegra Rodriguez,G Eckerlin,D Eckstein,E Gallo,M Guthoff,C Kleinwort,R Mankel,H Maser,C Muhl,A Mussgiller,A Nürnberg,Y Otarid,D Perez Adan,H Petersen,D Pitzl,D Rastorguev,O Reichelt,P Schütze,L Sreelatha Pramod,R Stever,A Velyka,A Ventura Barroso,R Walsh,A Zuber,A Albrecht

Journal

Journal of Instrumentation

Published Date

2023/11/17

The Large Hadron Collider at CERN will undergo an upgrade in order to increase its luminosity to 7.5× 1034 cm− 2s− 1. The increased luminosity during this High-Luminosity running phase, starting around 2029, means a higher rate of proton-proton interactions, hence a larger ionizing dose and particle fluence for the detectors. The current tracking system of the CMS experiment will be fully replaced in order to cope with the new operating conditions. Prototype planar pixel sensors for the CMS Inner Tracker with square 50 μm× 50 μm and rectangular 100 μm× 25 μm pixels read out by the RD53A chip were characterized in the lab and at the DESY-II testbeam facility in order to identify designs that meet the requirements of CMS during the High-Luminosity running phase. A spatial resolution of approximately 3.4 μm (2 μm) is obtained using the modules with 50 μm× 50 μm (100 μm× 25 μm) pixels at the optimal angle …

Measurement of the mass dependence of the transverse momentum of lepton pairs in Drell–Yan production in proton–proton collisions at

Authors

Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Marko Dragicevic,A Escalante Del Valle,Rudolf Fruehwirth,Manfred Jeitler,Natascha Krammer,Lukas Lechner,Dietrich Liko,Ivan Mikulec,Peter Paulitsch,Florian Michael Pitters,Jochen Schieck,Robert Schöfbeck,Markus Spanring,Sebastian Templ,Wolfgang Waltenberger,C-E Wulz,Mohamed Rashad Darwish,Eddi A De Wolf,Tahys Janssen,Tomas Kello,Aleksandra Lelek,H Rejeb Sfar,P Van Mechelen,S Van Putte,N Van Remortel,Freya Blekman,Emil Sørensen Bols,Jorgen D’Hondt,Martin Delcourt,H El Faham,Steven Lowette,Seth Moortgat,Alexander Morton,Denise Müller,Abanti Ranadhir Sahasransu,Stefaan Tavernier,W Van Doninck,P Van Mulders,Diego Beghin,Bugra Bilin,Barbara Clerbaux,Gilles De Lentdecker,Laurent Favart,Anastasia Grebenyuk,Amandeep Kaur Kalsi,Kyeongpil Lee,Mostafa Mahdavikhorrami,Inna Makarenko,Louis Moureaux,Laurent Pétré,Andrey Popov,Nicolas Postiau,Elizabeth Starling,Laurent Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,D Vannerom,L Wezenbeek,T Cornelis,D Dobur,J Knolle,L Lambrecht,G Mestdach,M Niedziela,C Roskas,A Samalan,K Skovpen,M Tytgat,B Vermassen,M Vit,A Bethani,G Bruno,F Bury,C Caputo,P David,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,Vincent Lemaitre,Kuntal Mondal,Jessica Prisciandaro,Angela Taliercio,Maksym Teklishyn,Tu Thong Tran,Pietro Vischia,Sébastien Wertz,GA Alves,Carsten Hensel,Arthur Moraes,WL Aldá Júnior,M Alves Gallo Pereira,M Barroso Ferreira Filho,H Brandao Malbouisson,Wagner Carvalho,Jose Chinellato,Eliza Melo Da Costa,Gustavo Gil Da Silveira,Dilson de Jesus Damiao,S Fonseca De Souza,D Matos Figueiredo,C Mora Herrera,K Mota Amarilo,Luiz Mundim,Helio Nogima,P Rebello Teles,Alberto Santoro,SM Silva Do Amaral,Andre Sznajder,Mauricio Thiel,F Torres Da Silva De Araujo,A Vilela Pereira,Cesar Augusto Bernardes,Luigi Calligaris,TR Fernandez Perez Tomei,EM Gregores,DS Lemos,Pedro G Mercadante,Sergio F Novaes,Sandra S Padula,Aleksandar Aleksandrov,Georgy Antchev,Roumyana Hadjiiska,Plamen Iaydjiev,Milena Misheva,Mircho Rodozov,Mariana Shopova,Georgi Sultanov,Anton Dimitrov,Todor Ivanov,Leander Litov,Borislav Pavlov,Peicho Petkov,Anton Petrov,Tongguang Cheng,Qianying Guo,Tahir Javaid,Monika Mittal,Hanwen Wang,L Yuan,Muhammad Ahmad,Gerry Bauer,Candan Dozen

Journal

The European Physical Journal C

Published Date

2023/7/17

The double differential cross sections of the Drell–Yan lepton pair (, dielectron or dimuon) production are measured as functions of the invariant mass , transverse momentum , and . The observable, derived from angular measurements of the leptons and highly correlated with , is used to probe the low- region in a complementary way. Dilepton masses up to 1 are investigated. Additionally, a measurement is performed requiring at least one jet in the final state. To benefit from partial cancellation of the systematic uncertainty, the ratios of the differential cross sections for various ranges to those in the Z mass peak interval are presented. The collected data correspond to an integrated luminosity of 36.3 of proton–proton collisions recorded with the CMS detector at the LHC at a centre-of-mass energy of 13. Measurements are compared with predictions based on perturbative …

Observation of four top quark production in proton-proton collisions at s= 13TeV

Authors

Aram Hayrapetyan,Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,A Escalante Del Valle,Priya Sajid Hussain,Manfred Jeitler,Natascha Krammer,Dietrich Liko,Ivan Mikulec,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Mangesh Sonawane,Sebastian Templ,Wolfgang Waltenberger,C-E Wulz,Mohamed Rashad Darwish,Tahys Janssen,Pierre Van Mechelen,Emil Sørensen Bols,Jorgen d'Hondt,Soumya Dansana,Alexandre De Moor,Martin Delcourt,Hesham El Faham,Steven Lowette,Inna Makarenko,Denise Müller,Abanti Ranadhir Sahasransu,Stefaan Tavernier,Michael Tytgat,Senne Van Putte,David Vannerom,Barbara Clerbaux,Gilles De Lentdecker,Laurent Favart,Dmytro Hohov,Johny Jaramillo,Ali Khalilzadeh,Kyeongpil Lee,Mostafa Mahdavikhorrami,Andrea Malara,Santiago Paredes,Laurent Pétré,Nicolas Postiau,Laurent Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,M De Coen,D Dobur,Y Hong,J Knolle,L Lambrecht,G Mestdach,C Rendón,A Samalan,K Skovpen,N Van Den Bossche,L Wezenbeek,A Benecke,G Bruno,C Caputo,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,V Lemaitre,J Lidrych,P Mastrapasqua,K Mondal,TT Tran,S Wertz,GA Alves,E Coelho,C Hensel,T Menezes De Oliveira,A Moraes,P Rebello Teles,M Soeiro,WL Aldá Júnior,M Alves Gallo Pereira,M Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,S Fonseca De Souza,J Martins,C Mora Herrera,K Mota Amarilo,L Mundim,H Nogima,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,PG Mercadante,SF Novaes,B Orzari,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,E Shumka,S Keshri,S Thakur,T Cheng,Q Guo,T Javaid,M Mittal,L Yuan,G Bauer,Z Hu,K Yi,GM Chen,HS Chen,M Chen,F Iemmi,CH Jiang,A Kapoor,H Liao,Z-A Liu,F Monti,MA Shahzad,R Sharma,JN Song

Journal

Physics Letters B

Published Date

2023/12/10

The observation of the production of four top quarks in proton-proton collisions is reported, based on a data sample collected by the CMS experiment at a center-of-mass energy of 13 TeV in 2016–2018 at the CERN LHC and corresponding to an integrated luminosity of 138 fb− 1. Events with two same-sign, three, or four charged leptons (electrons and muons) and additional jets are analyzed. Compared to previous results in these channels, updated identification techniques for charged leptons and jets originating from the hadronization of b quarks, as well as a revised multivariate analysis strategy to distinguish the signal process from the main backgrounds, lead to an improved expected signal significance of 4.9 standard deviations above the background-only hypothesis. Four top quark production is observed with a significance of 5.6 standard deviations, and its cross section is measured to be 17.7− 3.5+ 3.7 (stat …

A search for decays of the Higgs boson to invisible particles in events with a top-antitop quark pair or a vector boson in proton-proton collisions at

Authors

Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,Alberto Escalante Del Valle,Priya Sajid Hussain,Manfred Jeitler,Natascha Krammer,Lukas Lechner,Dietrich Liko,Ivan Mikulec,Peter Paulitsch,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Mangesh Sonawane,Sebastian Templ,Wolfgang Waltenberger,C-E Wulz,Mohamed Rashad Darwish,Tahys Janssen,Tomas Kello,H Rejeb Sfar,Pierre Van Mechelen,Emil Sørensen Bols,Jorgen D’Hondt,Alexandre De Moor,Martin Delcourt,H El Faham,Steven Lowette,Alexander Morton,Denise Müller,Abanti Ranadhir Sahasransu,Stefaan Tavernier,Walter Van Doninck,Senne Van Putte,David Vannerom,Barbara Clerbaux,Soumya Dansana,Gilles De Lentdecker,Laurent Favart,Dmytro Hohov,Johny Jaramillo,Kyeongpil Lee,Mostafa Mahdavikhorrami,Inna Makarenko,Andrea Malara,Santiago Paredes,Laurent Pétré,Nicolas Postiau,Laurent Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,Didar Dobur,Joscha Knolle,Luka Lambrecht,Gianny Mestdach,C Rendón,A Samalan,K Skovpen,M Tytgat,N Van Den Bossche,B Vermassen,L Wezenbeek,A Benecke,G Bruno,F Bury,C Caputo,P David,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,V Lemaitre,K Mondal,A Taliercio,TT Tran,P Vischia,S Wertz,GA Alves,E Coelho,C Hensel,A Moraes,P Rebello Teles,WL Aldá Júnior,M Alves Gallo Pereira,M Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,V Dos Santos Sousa,S Fonseca De Souza,J Martins,C Mora Herrera,K Mota Amarilo,L Mundim,H Nogima,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,PG Mercadante,SF Novaes,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,E Shumka,S Thakur,T Cheng,T Javaid,M Mittal,L Yuan,M Ahmad,G Bauer,Z Hu,S Lezki,K Yi,GM Chen,HS Chen,M Chen,F Iemmi,CH Jiang,A Kapoor,H Liao,Z-A Liu

Journal

The European Physical Journal C

Published Date

2023/10/16

A search for decays to invisible particles of Higgs bosons produced in association with a top-antitop quark pair or a vector boson, which both decay to a fully hadronic final state, has been performed using proton-proton collision data collected at by the CMS experiment at the LHC, corresponding to an integrated luminosity of 138. The 95% confidence level upper limit set on the branching fraction of the 125 Higgs boson to invisible particles, , is 0.54 (0.39 expected), assuming standard model production cross sections. The results of this analysis are combined with previous searches carried out at , 8, and 13 in complementary production modes. The combined upper limit at 95% confidence level on is 0.15 (0.08 expected).

Search for Higgs boson decays into Z and J/ψ and for Higgs and Z boson decays into J/ψ or Y pairs in pp collisions at s= 13 TeV

Authors

Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,A Escalante Del Valle,Rudolf Fruehwirth,Manfred Jeitler,Natascha Krammer,Lukas Lechner,Dietrich Liko,Ivan Mikulec,Peter Paulitsch,Florian Michael Pitters,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Sebastian Templ,Wolfgang Waltenberger,C-E Wulz,Mohamed Rashad Darwish,Eddi A De Wolf,Tahys Janssen,Tomas Kello,Aleksandra Lelek,H Rejeb Sfar,Pierre Van Mechelen,Senne Van Putte,ES Bols,J D'Hondt,A De Moor,M Delcourt,H El Faham,S Lowette,S Moortgat,A Morton,D Müller,AR Sahasransu,S Tavernier,W Van Doninck,D Vannerom,D Beghin,B Clerbaux,G De Lentdecker,L Favart,K Lee,M Mahdavikhorrami,I Makarenko,A Malara,S Paredes,L Pétré,A Popov,N Postiau,E Starling,L Thomas,M Vanden Bemden,C Vander Velde,Pascal Vanlaer,Didar Dobur,Joscha Knolle,Luka Lambrecht,Gianny Mestdach,Marek Niedziela,César Rendón,Christos Roskas,Amrutha Samalan,Kirill Skovpen,Michael Tytgat,Niels Van den Bossche,Basile Vermassen,Liam Wezenbeek,Anna Benecke,Agni Bethani,Giacomo Bruno,F Bury,Claudio Caputo,Pieter David,Christophe Delaere,Izzeddin Suat Donertas,Andrea Giammanco,Khawla Jaffel,Sa Jain,Vincent Lemaitre,Kuntal Mondal,Jessica Prisciandaro,Angela Taliercio,Tu Thong Tran,Pietro Vischia,Sébastien Wertz,GA Alves,Carsten Hensel,Arthur Moraes,P Rebello Teles,WL Aldá Júnior,M Alves Gallo Pereira,M Barroso Ferreira Filho,H Brandao Malbouisson,Wagner Carvalho,Jose Chinellato,Eliza Melo Da Costa,Gustavo Gil Da Silveira,D De Jesus Damiao,V Dos Santos Sousa,S Fonseca De Souza,Jordan Martins,C Mora Herrera,K Mota Amarilo,Luiz Mundim,Helio Nogima,Alberto Santoro,SM Silva Do Amaral,Andre Sznajder,Mauricio Thiel,F Torres Da Silva De Araujo,A Vilela Pereira,Cesar Augusto Bernardes,Luigi Calligaris,TR Fernandez Perez Tomei,EM Gregores,Pedro G Mercadante,Sergio F Novaes,Sandra S Padula,Aleksandar Aleksandrov,Georgy Antchev,Roumyana Hadjiiska,Plamen Iaydjiev,Milena Misheva,Mircho Rodozov,Mariana Shopova,Georgi Sultanov,Anton Dimitrov,Todor Ivanov,Leander Litov,Borislav Pavlov,Peicho Petkov,Anton Petrov,Tongguang Cheng,Tahir Javaid,Monika Mittal,Li Yuan,Muhammad Ahmad,Gerry Bauer,Candan Dozen,Zhen Hu,Yi Wang,Kai Yi,Emilien Chapon,Guo-Ming Chen

Journal

Physics Letters B

Published Date

2023/7/10

Decays of the Higgs boson into a Image 1 boson and a Image 2 or Image 3 meson are searched for in four-lepton final states with the CMS detector at the LHC. A data set of proton-proton collisions corresponding to an integrated luminosity of 138 fb− 1 is used. Using the same data set, decays of the Higgs and Image 1 boson into quarkonium pairs are also searched for. An observation of such decays with this sample would indicate the presence of physics beyond the standard model. No evidence for these decays has been observed and upper limits at the 95% confidence level are placed on the corresponding branching fractions (B). Assuming longitudinal polarization of the Higgs boson decay products, 95% confidence level observed upper limits for Image 4 and Image 5 are 1.9× 10− 3 and 6.6× 10− 3, respectively.

Search for Higgs Boson Decay to a Charm Quark-Antiquark Pair in Proton-Proton Collisions at s= 13 TeV

Authors

CMS collaboration

Journal

arXiv preprint arXiv:2205.05550

Published Date

2022/5/11

A search for the standard model Higgs boson decaying to a charm quark-antiquark pair, H , produced in association with a leptonically decaying V (W or Z) boson is presented. The search is performed with proton-proton collisions at = 13 TeV collected by the CMS experiment, corresponding to an integrated luminosity of 138 fb. Novel charm jet identification and analysis methods using machine learning techniques are employed. The analysis is validated by searching for Z in VZ events, leading to its first observation at a hadron collider with a significance of 5.7 standard deviations. The observed (expected) upper limit on (VH)(H) is 0.94 (0.50) pb at 95% confidence level (CL), corresponding to 14 (7.6) times the standard model prediction. For the Higgs-charm Yukawa coupling modifier, , the observed (expected) 95% CL interval is 1.1 5.5 ( 3.4), the most stringent constraint to date.

Evidence for four-top quark production in proton-proton collisions at s= 13TeV

Authors

Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,A Escalante Del Valle,Priya Sajid Hussain,Manfred Jeitler,Natascha Krammer,Lukas Lechner,Dietrich Liko,Ivan Mikulec,Peter Paulitsch,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Mangesh Sonawane,Sebastian Templ,Wolfgang Waltenberger,C-E Wulz,Mohamed Rashad Darwish,Tahys Janssen,Tomas Kello,H Rejeb Sfar,Pierre Van Mechelen,Emil Sørensen Bols,Jorgen d'Hondt,Alexandre De Moor,Martin Delcourt,Hesham El Faham,Steven Lowette,Alexander Morton,Denise Müller,Abanti Ranadhir Sahasransu,Stefaan Tavernier,Walter Van Doninck,Senne Van Putte,David Vannerom,Barbara Clerbaux,Soumya Dansana,Gilles De Lentdecker,Laurent Favart,Dmytro Hohov,Johny Jaramillo,Kyeongpil Lee,Mostafa Mahdavikhorrami,Inna Makarenko,Andrea Malara,Santiago Paredes,Laurent Pétré,Nicolas Postiau,Laurent Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,Didar Dobur,Joscha Knolle,Luka Lambrecht,Gianny Mestdach,C Rendón,A Samalan,K Skovpen,M Tytgat,N Van Den Bossche,B Vermassen,L Wezenbeek,A Benecke,G Bruno,F Bury,C Caputo,P David,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,V Lemaitre,K Mondal,A Taliercio,TT Tran,P Vischia,S Wertz,GA Alves,E Coelho,C Hensel,A Moraes,P Rebello Teles,WL Aldá Júnior,M Alves Gallo Pereira,M Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,V Dos Santos Sousa,S Fonseca De Souza,J Martins,C Mora Herrera,K Mota Amarilo,L Mundim,H Nogima,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,PG Mercadante,SF Novaes,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,E Shumka,S Thakur,T Cheng,Q Guo,T Javaid,M Mittal,L Yuan,M Ahmad,G Bauer,Z Hu,S Lezki,K Yi,GM Chen,HS Chen,M Chen,F Iemmi,CH Jiang,A Kapoor,H Liao

Journal

Physics Letters B

Published Date

2023/9/10

The production of four top quarks (t t¯ t t¯) is studied with LHC proton-proton collision data samples collected by the CMS experiment at a center-of-mass energy of 13 TeV, and corresponding to integrated luminosities of up to 138 fb− 1. Events that have no leptons (all-hadronic), one lepton, or two opposite-sign leptons (where lepton refers only to prompt electrons or prompt muons) are considered. This is the first t t¯ t t¯ measurement that includes the all-hadronic final state. The observed significance of the t t¯ t t¯ signal in these final states of 3.9 standard deviations (1.5 expected) provides evidence for t t¯ t t¯ production, with a measured cross section of 36− 11+ 12 fb. Combined with earlier CMS results in other final states, the signal significance is 4.0 standard deviations (3.2 expected). The combination returns an observed cross section of 17±4 (stat)±3 (syst) fb, which is consistent with the standard model prediction.

Search for a high-mass dimuon resonance produced in association with b quark jets at = 13 TeV

Authors

Aram Hayrapetyan,Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,Alberto Escalante Del Valle,Priya Sajid Hussain,Manfred Jeitler,Natascha Krammer,Dietrich Liko,Ivan Mikulec,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Mangesh Sonawane,Sebastian Templ,Wolfgang Waltenberger,C-E Wulz,Mohamed Rashad Darwish,Tahys Janssen,Pierre Van Mechelen,Emil Sørensen Bols,Jorgen D’Hondt,Soumya Dansana,Alexandre De Moor,Martin Delcourt,Hesham El Faham,Steven Lowette,Inna Makarenko,Denise Müller,Abanti Ranadhir Sahasransu,Stefaan Tavernier,Michael Tytgat,Senne Van Putte,David Vannerom,Barbara Clerbaux,Gilles De Lentdecker,Laurent Favart,Dmytro Hohov,Johny Jaramillo,Ali Khalilzadeh,Kyeongpil Lee,Mostafa Mahdavikhorrami,Andrea Malara,Santiago Paredes,Laurent Pétré,Nicolas Postiau,Laurent Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,M De Coen,D Dobur,Y Hong,Joscha Knolle,Luka Lambrecht,Gianny Mestdach,Cesar Rendón,Amrutha Samalan,Kirill Skovpen,N Van Den Bossche,L Wezenbeek,A Benecke,G Bruno,C Caputo,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,V Lemaitre,J Lidrych,P Mastrapasqua,K Mondal,TT Tran,S Wertz,GA Alves,E Coelho,C Hensel,T Menezes De Oliveira,A Moraes,P Rebello Teles,M Soeiro,WL Aldá Júnior,M Alves Gallo Pereira,Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,S Fonseca De Souza,J Martins,C Mora Herrera,K Mota Amarilo,L Mundim,H Nogima,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,PG Mercadante,SF Novaes,B Orzari,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,E Shumka,S Keshri,S Thakur,T Cheng,Q Guo,T Javaid,M Mittal,L Yuan,G Bauer,Z Hu,K Yi,GM Chen,HS Chen,M Chen,F Iemmi,CH Jiang,A Kapoor,H Liao,Z-A Liu,F Monti,MA Shahzad,R Sharma,JN Song

Journal

Journal of High Energy Physics

Published Date

2023/10

A search for high-mass dimuon resonance production in association with one or more b quark jets is presented. The study uses proton-proton collision data collected with the CMS detector at the LHC corresponding to an integrated luminosity of 138 fb− 1 at a center-of-mass energy of 13 TeV. Model-independent limits are derived on the number of signal events with exactly one or more than one b quark jet. Results are also interpreted in a lepton-flavor-universal model with Z′ boson couplings to a bb quark pair (g b), an sb quark pair (g b δ bs), and any same-flavor charged lepton (g ℓ) or neutrino pair (g ν), with| g ν|=| g ℓ|. For a Z′ boson with a mass= 350 GeV (2 TeV) and| δ bs|< 0.25, the majority of the parameter space with 0.0057<| g ℓ|< 0.35 (0.25<| g ℓ|< 0.43) and 0.0079<| g b|< 0.46 (0.34<| g b|< 0.57) is excluded at 95% confidence level. Finally, constraints are set on a Z′ model with parameters consistent with …

Observation of lepton pair production in ultraperipheral lead-lead collisions at = 5.02 TeV

Authors

Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,Alberto Escalante del Valle,Priya Sajid Hussain,Manfred Jeitler,Natascha Krammer,Lukas Lechner,Dietrich Liko,Ivan Mikulec,Peter Paulitsch,Florian Michael Pitters,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Sebastian Templ,Wolfgang Waltenberger,Claudia-Elisabeth Wulz,Mohamed Rashad Darwish,Tahys Janssen,Tomas Kello,Haifa Rejeb Sfar,Pierre van Mechelen,Emil Sørensen Bols,Jorgen d'Hondt,Alexandre de Moor,Martin Delcourt,Hesham El Faham,Steven Lowette,Seth Moortgat,Alexander Morton,Denise Müller,Abanti Ranadhir Sahasransu,Stefaan Tavernier,Walter van Doninck,David Vannerom,Barbara Clerbaux,Gilles de Lentdecker,Laurent Favart,Dmytro Hohov,Johny Jaramillo,Kyeongpil Lee,Mostafa Mahdavikhorrami,Inna Makarenko,Andrea Malara,Santiago Paredes,Laurent Pétré,Nicolas Postiau,Elizabeth Starling,Laurent Thomas,Max Vanden Bemden,Pascal Vanlaer,Didar Dobur,Joscha Knolle,Luka Lambrecht,Gianny Mestdach,Marek Niedziela,César Rendón,Christos Roskas,Amrutha Samalan,Kirill Skovpen,Michael Tytgat,Niels van den Bossche,Basile Vermassen,Liam Wezenbeek,Anna Benecke,Giacomo Bruno,Florian Joel J Bury,Claudio Caputo,Pieter David,Christophe Delaere,Izzeddin Suat Donertas,Andrea Giammanco,Khawla Jaffel,Sandhya Jain,Vincent Lemaitre,Kuntal Mondal,Jessica Prisciandaro,Angela Taliercio,Tu Thong Tran,Pietro Vischia,Sébastien Wertz,Gilvan Alves,Eduardo Coelho,Carsten Hensel,Arthur Moraes,Patricia Rebello Teles,Walter Luiz Aldá Júnior,Miguel Alves Gallo Pereira,Mapse Barroso Ferreira Filho,Helena Brandao Malbouisson,Wagner Carvalho,Jose Chinellato,Eliza Melo da Costa,Gustavo Gil da Silveira,Dilson de Jesus Damiao,Vitor dos Santos Sousa,Sandro Fonseca de Souza,Jordan Martins,Clemencia Mora Herrera,Kevin Mota Amarilo,Luiz Mundim,Helio Nogima,Alberto Santoro,Sheila Mara Silva Do Amaral,Andre Sznajder,Mauricio Thiel,Felipe Torres da Silva de Araujo,Antonio Vilela Pereira,Cesar Augusto Bernardes,Luigi Calligaris,Thiago Tomei,Eduardo de Moraes Gregores,Pedro G Mercadante,Sergio F Novaes,Sandra Padula,Aleksandar Aleksandrov,Georgy Antchev,Roumyana Hadjiiska,Plamen Iaydjiev,Milena Misheva,Mircho Rodozov,Mariana Shopova,Georgi Sultanov,Anton Dimitrov,Todor Ivanov,Leander Litov,Borislav Pavlov,Peicho Petkov,Anton Petrov,Elton Shumka,Tongguang Cheng,Tahir Javaid,Monika Mittal,Li Yuan,Muhammad Ahmad,Gerry Bauer,Zhen Hu,Samet Lezki,Kai Yi,Guo-Ming Chen,He-Sheng Chen,Mingshui Chen,Fabio Iemmi,Chun-Hua Jiang,Anshul Kapoor

Journal

Phys. Rev. Lett.

Published Date

2023

We present an observation of photon-photon production of lepton pairs in ultraperipheral lead-lead collisions. The measurement is based on a data sample with an integrated luminosity of 404 b collected by the CMS experiment at a nucleon-nucleon center-of-mass energy of 5.02 TeV. The process is observed for events with a muon and three charged hadrons in the final state. The measured fiducial cross section is = 4.8 0.6 (stat) 0.5 (syst) b, in agreement with leading-order QED predictions. Using , we estimate a model-dependent value of the anomalous magnetic moment of the lepton of = 0.001 .

Observation of the (3S) meson and suppression of states in PbPb collisions at = 5.02 TeV

Authors

Armen Tumasyan,Robin Erbacher,Camilo Andres Carrillo Montoya,Dave M Newbold,Wagner Carvalho,Maciej Górski,Manuel Sommerhalder,Cole Lindsey,Balazs Ujvari,Samila Muthumuni,Ayse Polatoz,Anna Tsatsos,Vinicius Massami Mikuni,Elton Shumka,Alfredo Gurrola,Basile Vermassen,Anne-Marie Magnan,Roumyana Hadjiiska,Ian Laflotte,Ian Mcalister,Willard Johns,Ludivine Ceard,Pierre Van Hove,Mohammad Alhusseini,Alberto Orso Maria Iorio,Ulrich Heintz,Giuseppe Latino,Andrew Hart,Federico Vazzoler,Sinan Sagir,Changgi Huh,Georgios Tsipolitis,Sanghyun Ko,Dylan Apparu,Soureek Mitra,Sergei Slabospitskii,Shamik Ghosh,Mircho Rodozov,Michael Tytgat,Robert Schöfbeck,Julia Vazquez Escobar,James Hirschauer,Andreas Nürnberg,Ho Fung Tsoi,Francisco Yumiceva,Reza Goldouzian,Victor Golovtcov,Ram Krishna Dewanjee,Chiara Rovelli,Eliza Melo Da Costa,Daniele Fasanella,Wei Shi,Polina Simkina,Vipin Bhatnagar,Zhen Hu,Hans Reithler,Austin Baty,Soumya Mukherjee,Tomas Lindén,Jonathon Langford,Graham Wilson,William Tabb,Furkan Dolek,Attilio Santocchia,Jaehoon Lim,Christos Roskas,Sergio Sánchez Navas,Manuel Calderon De La Barca Sanchez,Wolfram Dietrich Zeuner,Hesham El Faham,Jithin Madhusudanan Sreekala,Raphael Granier de Cassagnac,Georgios Daskalakis,Kin Ho Lo,Axel Buchot Perraguin,Andrés Abreu,Ernesto Migliore,Alexander Zotz,Tilman Rohe,Paul Schütze,Ece Asilar,Salvatore Nuzzo,Alexander Morton,Vivan Nguyen,Florian Joel J Bury,Gurkan Karaman,Henri Petrow,Jonathan Guiang,Kai-Feng Chen,Matthew Nguyen,David Stickland,Giorgio Apollinari,Michael Oshiro,Damir Lelas,Gillian Kopp,Michel Della Negra,Scarlet Norberg,Amitabh Lath,Daria Selivanova,Dennis Roy,Alexander Pauls,Martijn Mulders,Sandhya Jain,Nikolas Pervan,Lorenzo Uplegger,Sunil Bansal,Jeremi Niedziela,Roberval Walsh,Hugo Becerril Gonzalez,Christopher Palmer,Kristan Allan Hahn,Tao Huang,Olmo Cerri,George Stephans,Siqi Yuan,Olena Karacheban,Alicia Calderon,Zhaozhong Shi,Kevin Black,Thomas Kress,Georgia Karapostoli,Samuel Lascio,Fotios Ptochos,Noemi Beni,Berkan Kaynak,Achille Petrilli,Diogo Bastos,Bhargav Madhusudan Joshi,Abhishikth Mallampalli,Chenfeng Lu,Maria Cepeda,Mauricio Thiel,J William Gary,Cécile Caillol,Yannik Rath,John Paul Chou,Orgho Neogi,Mohammed Mahmoud,Peicho Petkov,John Rotter,Davide Piccolo,Pawel de Barbaro,Vaia Papadimitriou,Robert White,Nural Akchurin,Patrice Verdier,Reham Aly,Vincenzo Innocente,Donghyun Kim,Hyunchul Kim

Published Date

2023/3/30

The production of Υ (2S) and Υ (3S) mesons in lead-lead (PbPb) and proton-proton (pp) collisions is studied in their dimuon decay channel using the CMS detector at the LHC. The Υ (3S) meson is observed for the first time in PbPb collisions, with a significance above five standard deviations. The ratios of yields measured in PbPb and pp collisions are reported for both the Υ (2S) and Υ (3S) mesons, as functions of transverse momentum and PbPb collision centrality. These ratios, when appropriately scaled, are significantly less than unity, indicating a suppression of Υ yields in PbPb collisions. This suppression increases from peripheral to central PbPb collisions. Furthermore, the suppression is stronger for Υ (3S) mesons compared to Υ (2S) mesons, extending the pattern of sequential suppression of quarkonium states in nuclear collisions previously seen for the J/ψ, ψ (2S), Υ (1S), and Υ (2S) mesons.

Search for Higgs boson pairs decaying to WW*WW*, WW*ττ, and ττττ in proton-proton collisions at = 13 TeV

Authors

Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,Alberto Escalante Del Valle,Manfred Jeitler,Natascha Krammer,Lukas Lechner,Dietrich Liko,Ivan Mikulec,Peter Paulitsch,Florian Michael Pitters,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Sebastian Templ,Wolfgang Waltenberger,C-E Wulz,Mohamed Rashad Darwish,Eddi A De Wolf,Tahys Janssen,Tomas Kello,Aleksandra Lelek,H Rejeb Sfar,Pierre Van Mechelen,ES Bols,J D’Hondt,A De Moor,M Delcourt,H El Faham,S Lowette,S Moortgat,A Morton,D Müller,AR Sahasransu,S Tavernier,W Van Doninck,D Vannerom,D Beghin,B Clerbaux,G De Lentdecker,L Favart,J Jaramillo,K Lee,M Mahdavikhorrami,I Makarenko,A Malara,S Paredes,L Pétré,A Popov,N Postiau,E Starling,L Thomas,M Vanden Bemden,C Vander Velde,Pascal Vanlaer,Didar Dobur,Joscha Knolle,Luka Lambrecht,Gianny Mestdach,Marek Niedziela,César Rendón,Christos Roskas,Amrutha Samalan,Kirill Skovpen,Michael Tytgat,Niels Van den Bossche,Basile Vermassen,Liam Wezenbeek,Anna Benecke,Agni Bethani,Giacomo Bruno,F Bury,Claudio Caputo,Pieter David,Christophe Delaere,Izzeddin Suat Donertas,Andrea Giammanco,Khawla Jaffel,Sa Jain,V Lemaitre,K Mondal,J Prisciandaro,A Taliercio,TT Tran,P Vischia,S Wertz,GA Alves,E Coelho,C Hensel,A Moraes,P Rebello Teles,WL Aldá Júnior,M Alves Gallo Pereira,Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,V Dos Santos Sousa,S Fonseca De Souza,J Martins,C Mora Herrera,Kevin Mota Amarilo,L Mundim,H Nogima,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,F Torres Da Silva De Araujo,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,PG Mercadante,SF Novaes,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,Peicho Petkov,A Petrov,T Cheng,T Javaid,M Mittal,L Yuan,M Ahmad,G Bauer,Z Hu,K Yi,GM Chen,HS Chen,M Chen,F Iemmi

Journal

Journal of High Energy Physics

Published Date

2023/7

The results of a search for Higgs boson pair (HH) production in the WW* WW*, WW* ττ, and ττττ decay modes are presented. The search uses 138 fb− 1 of proton-proton collision data recorded by the CMS experiment at the LHC at a center-of-mass energy of 13 TeV from 2016 to 2018. Analyzed events contain two, three, or four reconstructed leptons, including electrons, muons, and hadronically decaying tau leptons. No evidence for a signal is found in the data. Upper limits are set on the cross section for nonresonant HH production, as well as resonant production in which a new heavy particle decays to a pair of Higgs bosons. For nonresonant production, the observed (expected) upper limit on the cross section at 95% confidence level (CL) is 21.3 (19.4) times the standard model (SM) prediction. The observed (expected) ratio of the trilinear Higgs boson self-coupling to its value in the SM is constrained to be within …

Search for top squark pair production in a final state with at least one hadronically decaying tau lepton in proton-proton collisions at = 13 TeV

Authors

Albert M Sirunyan,Armen Tumasyan,Wolfgang Adam,Federico Ambrogi,Thomas Bergauer,Johannes Brandstetter,Marko Dragicevic,Janos Erö,A Escalante Del Valle,Martin Flechl,Rudolf Fruehwirth,Manfred Jeitler,Natascha Krammer,Ilse Krätschmer,Dietrich Liko,Thomas Madlener,Ivan Mikulec,Navid Rad,Jochen Schieck,Robert Schöfbeck,Markus Spanring,Daniel Spitzbart,Wolfgang Waltenberger,C-E Wulz,Mateusz Zarucki,Vladimir Drugakov,Vladimir Mossolov,J Suarez Gonzalez,Mohamed Rashad Darwish,Eddi A De Wolf,Davide Di Croce,Xavier Janssen,Aleksandra Lelek,Maxim Pieters,H Rejeb Sfar,Hans Van Haevermaet,Pierre Van Mechelen,Senne Van Putte,Nick Van Remortel,Freya Blekman,Emil Sørensen Bols,Simranjit Singh Chhibra,Jorgen D’Hondt,Jarne De Clercq,Denys Lontkovskyi,Steven Lowette,Ivan Marchesini,Seth Moortgat,Quentin Python,Kirill Skovpen,Stefaan Tavernier,Walter Van Doninck,Petra Van Mulders,Diego Beghin,Bugra Bilin,Hugues Brun,Barbara Clerbaux,Gilles De Lentdecker,Hugo Delannoy,Brian Dorney,Laurent Favart,Anastasia Grebenyuk,Amandeep Kaur Kalsi,Andrey Popov,Nicolas Postiau,Elizabeth Starling,Laurent Thomas,C Vander Velde,P Vanlaer,D Vannerom,T Cornelis,D Dobur,I Khvastunov,M Niedziela,C Roskas,D Trocino,M Tytgat,W Verbeke,B Vermassen,M Vit,N Zaganidis,O Bondu,G Bruno,C Caputo,P David,C Delaere,M Delcourt,A Giammanco,V Lemaitre,A Magitteri,J Prisciandaro,A Saggio,M Vidal Marono,P Vischia,J Zobec,FL Alves,GA Alves,G Correia Silva,C Hensel,A Moraes,P Rebello Teles,E Belchior Batista Das Chagas,W Carvalho,J Chinellato,E Coelho,EM Da Costa,GG Da Silveira,D De Jesus Damiao,C De Oliveira Martins,S Fonseca De Souza,LM Huertas Guativa,H Malbouisson,J Martins,D Matos Figueiredo,M Medina Jaime,M Melo De Almeida,C Mora Herrera,L Mundim,H Nogima,WL Prado Da Silva,LJ Sanchez Rosas,A Santoro,A Sznajder,M Thiel,EJ Tonelli Manganote,F Torres Da Silva De Araujo,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,DS Lemos,PG Mercadante,SF Novaes,SandraS Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,M Bonchev,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,W Fang

Journal

Journal of High Energy Physics

Published Date

2020/2

A search for pair production of the supersymmetric partner of the top quark, the top squark, in proton-proton collision events at= 13 TeV is presented in a final state containing hadronically decaying tau leptons and large missing transverse momentum. This final state is highly sensitive to high-tan β or higgsino-like scenarios in which decays of electroweak gauginos to tau leptons are dominant. The search uses a data set corresponding to an integrated luminosity of 77.2 fb− 1, which was recorded with the CMS detector during 2016 and 2017. No significant excess is observed with respect to the background prediction. Exclusion limits at 95% confidence level are presented in the top squark and lightest neutralino mass plane within the framework of simplified models, in which top squark masses up to 1100 GeV are excluded for a nearly massless neutralino.

Search for direct production of GeV-scale resonances decaying to a pair of muons in proton-proton collisions at = 13 TeV

Authors

CMS Collaboration

Journal

arXiv preprint arXiv:2309.16003

Published Date

2023/9/27

A search for direct production of low-mass dimuon resonances is performed using = 13 TeV proton-proton collision data collected by the CMS experiment during the 2017-2018 operation of the CERN LHC with an integrated luminosity of 96.6 fb. The search exploits a dedicated high-rate trigger stream that records events with two muons with transverse momenta as low as 3 GeV but does not include the full event information. The search is performed by looking for narrow peaks in the dimuon mass spectrum in the ranges of 1.1-2.6 GeV and 4.2-7.9 GeV. No significant excess of events above the expectation from the standard model background is observed. Model-independent limits on production rates of dimuon resonances within the experimental fiducial acceptance are set. Competitive or world's best limits are set at 90% confidence level for a minimal dark photon model and for a scenario with two Higgs doublets and an extra complex scalar singlet (2HDM+S). Values of the squared kinetic mixing coefficient in the dark photon model above 10 are excluded over most of the mass range of the search. In the 2HDM+S, values of the mixing angle above 0.08 are excluded over most of the mass range of the search with a fixed ratio of the Higgs doublets vacuum expectation = 0.5.

Search for Evidence of Baryogenesis and Dark Matter in Decays at BABAR

Authors

JP Lees,V Poireau,V Tisserand,E Grauges,A Palano,G Eigen,DN Brown,Yu G Kolomensky,M Fritsch,H Koch,R Cheaib,C Hearty,TS Mattison,JA McKenna,RY So,VE Blinov,AR Buzykaev,VP Druzhinin,EA Kozyrev,EA Kravchenko,SI Serednyakov,Yu I Skovpen,EP Solodov,K Yu Todyshev,AJ Lankford,B Dey,JW Gary,O Long,AM Eisner,WS Lockman,W Panduro Vazquez,DS Chao,CH Cheng,B Echenard,KT Flood,DG Hitlin,Y Li,DX Lin,S Middleton,TS Miyashita,P Ongmongkolkul,J Oyang,FC Porter,M Röhrken,BT Meadows,MD Sokoloff,JG Smith,SR Wagner,D Bernard,M Verderi,D Bettoni,C Bozzi,R Calabrese,G Cibinetto,E Fioravanti,I Garzia,E Luppi,V Santoro,A Calcaterra,R De Sangro,G Finocchiaro,S Martellotti,P Patteri,IM Peruzzi,M Piccolo,M Rotondo,A Zallo,S Passaggio,C Patrignani,BJ Shuve,HM Lacker,B Bhuyan,U Mallik,C Chen,J Cochran,S Prell,AV Gritsan,N Arnaud,M Davier,F Le Diberder,AM Lutz,G Wormser,DJ Lange,DM Wright,JP Coleman,DE Hutchcroft,DJ Payne,C Touramanis,AJ Bevan,F Di Lodovico,G Cowan,Sw Banerjee,CL Davis,AG Denig,W Gradl,K Griessinger,A Hafner,KR Schubert,RJ Barlow,GD Lafferty,R Cenci,A Jawahery,DA Roberts,R Cowan,SH Robertson,RM Seddon,N Neri,F Palombo,L Cremaldi,R Godang,DJ Summers,G De Nardo,C Sciacca,CP Jessop,JM LoSecco,K Honscheid,A Gaz,M Margoni,G Simi,F Simonetto,R Stroili,S Akar,E Ben-Haim,M Bomben,GR Bonneaud,G Calderini,J Chauveau,G Marchiori,J Ocariz,M Biasini,E Manoni,A Rossi,G Batignani,S Bettarini,M Carpinelli,G Casarosa,M Chrzaszcz,F Forti,MA Giorgi,Alberto Lusiani,B Oberhof,E Paoloni,M Rama,G Rizzo,JJ Walsh,L Zani,AJS Smith,F Anulli,R Faccini,F Ferrarotto

Journal

Physical review letters

Published Date

2023/11/16

A new dark sector antibaryon, denoted ψ D, could be produced in decays of B mesons. This Letter presents a search for B+→ ψ D+ p (and the charge conjugate) decays in e+ e− annihilations at 10.58 GeV, using data collected in the BABAR experiment. Data corresponding to an integrated luminosity of 398 fb− 1 are analyzed. No evidence for a signal is observed. Branching fraction upper limits in the range from 10− 7–10− 5 are obtained at 90% confidence level for masses of 1.0< m ψ D< 4.3 GeV/c 2. The result is also reinterpreted to provide the first limits on a supersymmetric model with R-parity violation and a light neutralino.

CMS pythia  8 colour reconnection tunes based on underlying-event data

Authors

Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,A Escalante Del Valle,Rudolf Fruehwirth,Manfred Jeitler,Natascha Krammer,Lukas Lechner,Dietrich Liko,Ivan Mikulec,Peter Paulitsch,Florian Michael Pitters,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Sebastian Templ,Wolfgang Waltenberger,C-E Wulz,Mohamed Rashad Darwish,Eddi A De Wolf,Tahys Janssen,Tomas Kello,Aleksandra Lelek,H Rejeb Sfar,P Van Mechelen,S Van Putte,N Van Remortel,Emil Sørensen Bols,Jorgen D’Hondt,Martin Delcourt,H El Faham,Steven Lowette,Seth Moortgat,Alexander Morton,Denise Müller,Abanti Ranadhir Sahasransu,Stefaan Tavernier,W Van Doninck,David Vannerom,Diego Beghin,Bugra Bilin,Barbara Clerbaux,Gilles De Lentdecker,Laurent Favart,Amandeep Kaur Kalsi,Kyeongpil Lee,Mostafa Mahdavikhorrami,Inna Makarenko,Louis Moureaux,Santiago Paredes,Laurent Pétré,Andrey Popov,Nicolas Postiau,Elizabeth Starling,Laurent Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,T Cornelis,D Dobur,J Knolle,L Lambrecht,G Mestdach,M Niedziela,C Rendón,C Roskas,A Samalan,K Skovpen,M Tytgat,Basile Vermassen,Liam Wezenbeek,A Benecke,A Bethani,G Bruno,F Bury,C Caputo,P David,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,V Lemaitre,K Mondal,J Prisciandaro,A Taliercio,M Teklishyn,TT Tran,P Vischia,S Wertz,GA Alves,C Hensel,A Moraes,P Rebello Teles,WL Aldá Júnior,M Alves Gallo Pereira,M Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,V Dos Santos Sousa,S Fonseca De Souza,C Mora Herrera,K Mota Amarilo,L Mundim,H Nogima,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,F Torres Da Silva De Araujo,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,DS Lemos,PG Mercadante,SF Novaes,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,T Cheng,T Javaid,M Mittal,L Yuan,M Ahmad,G Bauer,C Dozen,Z Hu,J Martins

Journal

The European Physical Journal C

Published Date

2023/7/10

New sets of parameter tunes for two of the colour reconnection models, quantum chromodynamics-inspired and gluon-move, implemented in the pythia  8 event generator, are obtained based on the default CMS pythia  8 underlying-event tune, CP5. Measurements sensitive to the underlying event performed by the CMS experiment at centre-of-mass energies and 13, and by the CDF experiment at 1.96 are used to constrain the parameters of colour reconnection models and multiple-parton interactions simultaneously. The new colour reconnection tunes are compared with various measurements at 1.96, 7, 8, and 13 including measurements of the underlying-event, strange-particle multiplicities, jet substructure observables, jet shapes, and colour flow in top quark pair () events. The new tunes are also used to estimate the uncertainty related to colour reconnection modelling in the top quark mass …

Measurements of inclusive and differential cross sections for the Higgs boson production and decay to four-leptons in proton-proton collisions at = 13 TeV

Authors

Georges Aad,Brad Abbott,Dale Charles Abbott,Adam Abed Abud,Kira Abeling,Deshan Kavishka Abhayasinghe,Syed Haider Abidi,OS AbouZeid,Nadine L Abraham,Halina Abramowicz,Henso Abreu,Yiming Abulaiti,Bobby Samir Acharya,Baida Achkar,Lennart Adam,C Adam Bourdarios,Leszek Adamczyk,Lukas Adamek,Jahred Adelman,Michael Adersberger,Aytul Adiguzel,Sofia Adorni,Tim Adye,AA Affolder,Yoav Afik,Christina Agapopoulou,Merve Nazlim Agaras,Anamika Aggarwal,Catalin Agheorghiesei,JA Aguilar-Saavedra,Ammara Ahmad,Faig Ahmadov,Waleed Syed Ahmed,Xiaocong Ai,Giulio Aielli,Shunichi Akatsuka,Melike Akbiyik,TPA Åkesson,Ece Akilli,AV Akimov,Konie Al Khoury,Gian Luigi Alberghi,Justin Albert,MJ Alconada Verzini,S Alderweireldt,Martin Aleksa,IN Aleksandrov,Calin Alexa,Theodoros Alexopoulos,Alice Alfonsi,Fabrizio Alfonsi,Muhammad Alhroob,Babar Ali,Shahzad Ali,Malik Aliev,Gianluca Alimonti,Corentin Allaire,BMM Allbrooke,Benjamin William Allen,PP Allport,Alberto Aloisio,Francisco Alonso,Cristiano Alpigiani,E Alunno Camelia,M Alvarez Estevez,MG Alviggi,Y Amaral Coutinho,Alessandro Ambler,Luca Ambroz,Christoph Amelung,D Amidei,SP Amor Dos Santos,Simone Amoroso,Cherifa Sabrina Amrouche,Fenfen An,Christos Anastopoulos,Nansi Andari,Timothy Andeen,John Kenneth Anders,Stefio Yosse Andrean,Attilio Andreazza,V Andrei,Christopher Ryan Anelli,Stylianos Angelidakis,Aaron Angerami,AV Anisenkov,Alberto Annovi,Claire Antel,Matthew Thomas Anthony,Egor Antipov,Mario Antonelli,DJA Antrim,Fabio Anulli,Masato Aoki,JA Aparisi Pozo,MA Aparo,L Aperio Bella,N Aranzabal Barrio,V Araujo Ferraz,R Araujo Pereira,Chiara Arcangeletti,ATH Arce,Francisco Anuar Arduh,Jean-Francois Arguin,Spyridon Argyropoulos,J-H Arling,Aaron James Armbruster,Alexander Armstrong,Olivier Arnaez,Hannah Arnold,ZP Arrubarrena Tame,Giacomo Artoni,Haruka Asada,Kanae Asai,Shoji Asai,Thanawat Asawatavonvanich,Nedaa Asbah,Eleni Myrto Asimakopoulou,Lily Asquith,Jihad Assahsah,Ketevi Assamagan,Robert Astalos,Ryan Justin Atkin,Markus Atkinson,Naim Bora Atlay,Hicham Atmani,Kamil Augsten,Volker Andreas Austrup,Giuseppe Avolio,Mohamad Kassem Ayoub,Georges Azuelos,Henri Bachacou,Konstantinos Bachas,Moritz Backes,Filip Backman,Paolo Bagnaia,Marzieh Bahmani,H Bahrasemani,AJ Bailey,Virginia Ruth Bailey,JT Baines,Christos Bakalis,OK Baker,Pepijn Johannes Bakker,Evelin Bakos,D Bakshi Gupta,Shyam Balaji,Rahul Balasubramanian,EM Baldin,Petr Balek

Journal

Journal of High Energy Physics

Published Date

2020/9

Inclusive and differential cross-sections for the production of top quarks in association with a photon are measured with proton-proton collision data corresponding to an integrated luminosity of 139 fb− 1. The data were collected by the ATLAS detector at the LHC during Run 2 between 2015 and 2018 at a centre-of-mass energy of 13 TeV. The measurements are performed in a fiducial volume defined at parton level. Events with exactly one photon, one electron and one muon of opposite sign, and at least two jets, of which at least one is b-tagged, are selected. The fiducial cross-section is measured to be fb. Differential cross-sections as functions of several observables are compared with state-of-the-art Monte Carlo simulations and next-to-leading-order theoretical calculations. These include cross-sections as functions of photon kinematic variables, angular variables related to the photon and the leptons, and …

Observation of new structure in the J/J/ mass spectrum in proton-proton collisions at = 13 TeV

Authors

Aram Hayrapetyan,Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,Alberto Escalante del Valle,Priya Sajid Hussain,Manfred Jeitler,Natascha Krammer,Dietrich Liko,Ivan Mikulec,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Mangesh Sonawane,Sebastian Templ,Wolfgang Waltenberger,Claudia-Elisabeth Wulz,Mohamed Rashad Darwish,Tahys Janssen,Pierre van Mechelen,Emil Sørensen Bols,Jorgen d'Hondt,Soumya Dansana,Alexandre de Moor,Martin Delcourt,Hesham El Faham,Steven Lowette,Inna Makarenko,Denise Müller,Abanti Ranadhir Sahasransu,Stefaan Tavernier,Michael Tytgat,Senne van Putte,David Vannerom,Barbara Clerbaux,Gilles de Lentdecker,Laurent Favart,Dmytro Hohov,Johny Jaramillo,Ali Khalilzadeh,Kyeongpil Lee,Mostafa Mahdavikhorrami,Andrea Malara,Santiago Paredes,Laurent Pétré,Nicolas Postiau,Laurent Thomas,Max Vanden Bemden,Pascal Vanlaer,Maarten de Coen,Didar Dobur,Yanwen Hong,Joscha Knolle,Luka Lambrecht,Gianny Mestdach,César Rendón,Amrutha Samalan,Kirill Skovpen,Niels van den Bossche,Liam Wezenbeek,Anna Benecke,Giacomo Bruno,Claudio Caputo,Christophe Delaere,Izzeddin Suat Donertas,Andrea Giammanco,Khawla Jaffel,Sandhya Jain,Vincent Lemaitre,Jindrich Lidrych,Paola Mastrapasqua,Kuntal Mondal,Tu Thong Tran,Sébastien Wertz,Gilvan Alves,Eduardo Coelho,Carsten Hensel,Thales Menezes de Oliveira,Arthur Moraes,Patricia Rebello Teles,Mariana Soeiro,Walter Luiz Aldá Júnior,Miguel Alves Gallo Pereira,Mapse Barroso Ferreira Filho,Helena Brandao Malbouisson,Wagner Carvalho,Jose Chinellato,Eliza Melo da Costa,Gustavo Gil da Silveira,Dilson de Jesus Damiao,Sandro Fonseca de Souza,Jordan Martins,Clemencia Mora Herrera,Kevin Mota Amarilo,Luiz Mundim,Helio Nogima,Alberto Santoro,Sheila Mara Silva Do Amaral,Andre Sznajder,Mauricio Thiel,Antonio Vilela Pereira,Cesar Augusto Bernardes,Luigi Calligaris,Thiago Tomei,Eduardo de Moraes Gregores,Pedro G Mercadante,Sergio F Novaes,Breno Orzari,Sandra Padula,Aleksandar Aleksandrov,Georgy Antchev,Roumyana Hadjiiska,Plamen Iaydjiev,Milena Misheva,Mariana Shopova,Georgi Sultanov,Anton Dimitrov,Todor Ivanov,Leander Litov,Borislav Pavlov,Peicho Petkov,Anton Petrov,Elton Shumka,Sumit Keshri,Shalini Thakur,Tongguang Cheng,Qianying Guo,Tahir Javaid,Monika Mittal,Li Yuan,Gerry Bauer,Jiahua Chen,Jinjing Gu,Zhen Hu,Jinfeng Liu,Xining Wang,Hongwei Wen,Kai Yi,Jingqing Zhang,Guo-Ming Chen,He-Sheng Chen,Mingshui Chen,Fabio Iemmi,Chun-Hua Jiang,Anshul Kapoor,Hongbo Liao

Published Date

2023/10/12

A search is reported for near-threshold structures in the J/J/ invariant mass spectrum produced in proton-proton collisions at = 13 TeV from data collected by the CMS experiment, corresponding to an integrated luminosity of 135 fb. A new structure is observed with a significance above 5 standard deviations at a mass of 6552 10 (stat) 12 (syst) MeV. Another structure with even higher significance is found at a mass of 6927 9 (stat) 4 (syst) MeV, which is consistent with the X(6900) resonance reported by the LHCb experiment and confirmed by the ATLAS experiment. Evidence for another new structure, with a local significance of 4.1 standard deviations, is found at a mass of 7287 (stat) 5 (syst) MeV. The masses and significances are obtained in a model without considering possible quantum mechanical interference between the resonances. Incorporating this interference provides a better description of the mass spectrum between the resonances and shifts the measured masses by up to 150 MeV.

Inclusive and differential cross section measurements of production in the lepton+jets channel at 13 TeV

Authors

Aram Hayrapetyan,Robin Erbacher,Camilo Andres Carrillo Montoya,Dave M Newbold,Wagner Carvalho,Nimmitha Karunarathna,Maciej Górski,Manuel Sommerhalder,Cole Lindsey,Balazs Ujvari,Samila Muthumuni,Ayse Polatoz,Anna Tsatsos,Vinicius Massami Mikuni,Elton Shumka,Alfredo Gurrola,Anne-Marie Magnan,Roumyana Hadjiiska,Ian Laflotte,Ian Mcalister,Willard Johns,Ludivine Ceard,Pierre Van Hove,Mohammad Alhusseini,Alberto Orso Maria Iorio,Ulrich Heintz,Giuseppe Latino,Andrew Hart,Federico Vazzoler,Sinan Sagir,Changgi Huh,Georgios Tsipolitis,Joseph Lynn Dulemba,Sanghyun Ko,Dylan Apparu,Soureek Mitra,Sergei Slabospitskii,Shamik Ghosh,Maria Giulia Ratti,Michael Tytgat,Robert Schöfbeck,Julia Vazquez Escobar,James Hirschauer,Andreas Nürnberg,Ho Fung Tsoi,Francisco Yumiceva,Reza Goldouzian,Victor Golovtcov,Ram Krishna Dewanjee,Chiara Rovelli,Eliza Melo Da Costa,Daniele Fasanella,Polina Simkina,Vipin Bhatnagar,Zhen Hu,Hans Reithler,Austin Baty,Soumya Mukherjee,Tomas Lindén,Jonathon Langford,Graham Wilson,William Tabb,Furkan Dolek,Attilio Santocchia,Sergio Sánchez Navas,Manuel Calderon De La Barca Sanchez,Wolfram Dietrich Zeuner,Hesham El Faham,Jithin Madhusudanan Sreekala,Raphael Granier de Cassagnac,Georgios Daskalakis,Kin Ho Lo,Axel Buchot Perraguin,Andrés Abreu,Ernesto Migliore,Alexander Zotz,Tilman Rohe,Paul Schütze,Ece Asilar,Salvatore Nuzzo,Alexander Morton,Grace Cummings,Yasser Assran,Florian Joel J Bury,Gurkan Karaman,Henri Petrow,Jonathan Guiang,Kai-Feng Chen,Matthew Nguyen,Liam Brennan,Irene Dutta,Giorgio Apollinari,Michael Oshiro,Damir Lelas,Gillian Kopp,Michel Della Negra,Amitabh Lath,Dennis Roy,Alexander Pauls,Martijn Mulders,Fabrizio Palla,Nikolas Pervan,Lorenzo Uplegger,Marina Kolosova,Sunil Bansal,Roberval Walsh,Hugo Becerril Gonzalez,Vladimir Makarenko,Christopher Palmer,Kristan Allan Hahn,Tao Huang,Olmo Cerri,George Stephans,Siqi Yuan,Luiz Mundim,Olena Karacheban,Alicia Calderon,Zhaozhong Shi,Kevin Black,Thomas Kress,Georgia Karapostoli,Samuel Lascio,Fotios Ptochos,Berkan Kaynak,Wei Wei,Achille Petrilli,Diogo Bastos,Bhargav Madhusudan Joshi,Abhishikth Mallampalli,Chenfeng Lu,Maria Cepeda,Mauricio Thiel,Dylan Blend,Cécile Caillol,Yannik Rath,John Paul Chou,Nihar Ranjan Saha,Orgho Neogi,Mohammed Mahmoud,Peicho Petkov,John Rotter,Davide Piccolo,Emanuel Pfeffer,Florian Rehm,Pawel de Barbaro,Vaia Papadimitriou,Robert White,Nural Akchurin,Qianying Guo,Patrice Verdier

Published Date

2023/9/25

Measurements of inclusive and normalized differential cross sections of the associated production of top quark-antiquark and bottom quark-antiquark pairs, ttbb, are presented. The results are based on data from proton-proton collisions collected by the CMS detector at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 138 fb− 1. The cross sections are measured in the lepton+ jets decay channel of the top quark pair, using events containing exactly one isolated electron or muon and at least five jets. Measurements are made in four fiducial phase space regions, targeting different aspects of the ttbb process. Distributions are unfolded to the particle level through maximum likelihood fits, and compared with predictions from several event generators. The inclusive cross section measurements of this process in the fiducial phase space regions are the most precise to date. In most cases, the measured inclusive cross sections exceed the predictions with the chosen generator settings. The only exception is when using a particular choice of dynamic renormalization scale, µR= 12 ni= t, t, b, b m1/4

Search for new heavy resonances decaying to WW, WZ, ZZ, WH, or ZH boson pairs in the all-jets final state in proton-proton collisions at s= 13TeV

Authors

Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,A Escalante Del Valle,Priya Sajid Hussain,Manfred Jeitler,Natascha Krammer,Lukas Lechner,Dietrich Liko,Ivan Mikulec,Peter Paulitsch,Florian Michael Pitters,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Sebastian Templ,Wolfgang Waltenberger,C-E Wulz,Mohamed Rashad Darwish,Tahys Janssen,Tomas Kello,H Rejeb Sfar,Pierre Van Mechelen,Emil Sørensen Bols,Jorgen d'Hondt,Alexandre De Moor,Martin Delcourt,Hesham El Faham,Steven Lowette,Seth Moortgat,Alexander Morton,Denise Müller,Abanti Ranadhir Sahasransu,Stefaan Tavernier,Walter Van Doninck,David Vannerom,Barbara Clerbaux,Gilles De Lentdecker,Laurent Favart,Dmytro Hohov,Johny Jaramillo,Kyeongpil Lee,Mostafa Mahdavikhorrami,Inna Makarenko,Andrea Malara,Santiago Paredes,Laurent Pétré,Nicolas Postiau,Elizabeth Starling,Laurent Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,D Dobur,J Knolle,L Lambrecht,G Mestdach,M Niedziela,C Rendón,C Roskas,A Samalan,K Skovpen,M Tytgat,N Van Den Bossche,B Vermassen,L Wezenbeek,A Benecke,G Bruno,F Bury,C Caputo,P David,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,V Lemaitre,K Mondal,J Prisciandaro,A Taliercio,TT Tran,P Vischia,S Wertz,GA Alves,E Coelho,C Hensel,A Moraes,P Rebello Teles,WL Aldá Júnior,M Alves Gallo Pereira,M Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,V Dos Santos Sousa,S Fonseca De Souza,J Martins,C Mora Herrera,K Mota Amarilo,L Mundim,H Nogima,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,F Torres Da Silva De Araujo,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,PG Mercadante,SF Novaes,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,E Shumka,T Cheng,T Javaid,M Mittal,L Yuan,M Ahmad,G Bauer,Z Hu,S Lezki,K Yi,GM Chen,HS Chen,M Chen,F Iemmi,CH Jiang

Journal

Physics Letters B

Published Date

2023/9/10

A search for new heavy resonances decaying to WW, WZ, ZZ, WH, or ZH boson pairs in the all-jets final state is presented. The analysis is based on proton-proton collision data recorded by the CMS detector in 2016–2018 at a centre-of-mass energy of 13 TeV at the CERN LHC, corresponding to an integrated luminosity of 138 fb− 1. The search is sensitive to resonances with masses between 1.3 and 6 TeV, decaying to bosons that are highly Lorentz-boosted such that each of the bosons forms a single large-radius jet. Machine learning techniques are employed to identify such jets. No significant excess over the estimated standard model background is observed. A maximum local significance of 3.6 standard deviations, corresponding to a global significance of 2.3 standard deviations, is observed at masses of 2.1 and 2.9 TeV. In a heavy vector triplet model, spin-1 Z′ and W′ resonances with masses below 4.8 …

Search for light Higgs bosons from supersymmetric cascade decays in collisions at

Authors

Armen Tumasyan,Waldemar Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,A Escalante Del Valle,Rudolf Fruehwirth,Manfred Jeitler,N Krammer,L Lechner,D Liko,I Mikulec,P Paulitsch,FM Pitters,J Schieck,R Schöfbeck,D Schwarz,S Templ,W Waltenberger,C-E Wulz,MR Darwish,EA De Wolf,Tahys Janssen,T Kello,A Lelek,H Rejeb Sfar,P Van Mechelen,S Van Putte,N Van Remortel,ES Bols,J D’Hondt,A De Moor,M Delcourt,H El Faham,S Lowette,S Moortgat,A Morton,D Müller,AR Sahasransu,S Tavernier,W Van Doninck,D Vannerom,D Beghin,B Bilin,B Clerbaux,G De Lentdecker,L Favart,AK Kalsi,K Lee,M Mahdavikhorrami,I Makarenko,L Moureaux,S Paredes,L Pétré,A Popov,N Postiau,E Starling,L Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,T Cornelis,D Dobur,J Knolle,L Lambrecht,G Mestdach,M Niedziela,C Rendón,C Roskas,A Samalan,K Skovpen,M Tytgat,B Vermassen,L Wezenbeek,A Benecke,A Bethani,G Bruno,F Bury,C Caputo,P David,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,V Lemaitre,K Mondal,J Prisciandaro,A Taliercio,M Teklishyn,TT Tran,P Vischia,S Wertz,GA Alves,C Hensel,A Moraes,P Rebello Teles,WL Aldá Júnior,M Alves Gallo Pereira,M Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,V Dos Santos Sousa,S Fonseca De Souza,C Mora Herrera,K Mota Amarilo,L Mundim,H Nogima,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,F Torres Da Silva De Araujo,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,DS Lemos,PG Mercadante,SF Novaes,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,T Cheng,T Javaid,M Mittal,L Yuan,M Ahmad,G Bauer,C Dozen,Z Hu

Journal

The European Physical Journal C

Published Date

2023/7/6

A search is reported for pairs of light Higgs bosons (H 1) produced in supersymmetric cascade decays in final states with small missing transverse momentum. A data set of LHC pp collisions collected with the CMS detector at s= 13 TeV and corresponding to an integrated luminosity of 138 fb-1 is used. The search targets events where both H 1 bosons decay into pairs that are reconstructed as large-radius jets using substructure techniques. No evidence is found for an excess of events beyond the background expectations of the standard model (SM). Results from the search are interpreted in the next-to-minimal supersymmetric extension of the SM, where a “singlino” of small mass leads to squark and gluino cascade decays that can predominantly end in a highly Lorentz-boosted singlet-like H 1 and a singlino-like neutralino of small transverse momentum. Upper limits are set on the product of the squark or gluino …

Measurement of the differential [... formula...] production cross section as a function of the jet mass and extraction of the top quark mass in hadronic decays of boosted top …

Authors

A Tumasyan,W Adam,JW Andrejkovic,T Bergauer,S Chatterjee,K Damanakis,M Dragicevic,A Escalante Del Valle,PS Hussain,M Jeitler,N Krammer,L Lechner,D Liko,I Mikulec,P Paulitsch,FM Pitters,J Schieck,R Schöfbeck,D Schwarz,S Templ,W Waltenberger,C-E Wulz,MR Darwish,T Janssen,T Kello,H Rejeb Sfar,P Van Mechelen,ES Bols,J D’Hondt,A De Moor,M Delcourt,H El Faham,S Lowette,S Moortgat,A Morton,D Müller,AR Sahasransu,S Tavernier,W Van Doninck,D Vannerom,B Clerbaux,G De Lentdecker,L Favart,D Hohov,J Jaramillo,K Lee,M Mahdavikhorrami,I Makarenko,A Malara,S Paredes,L Pétré,N Postiau,L Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,D Dobur,J Knolle,L Lambrecht,G Mestdach,M Niedziela,C Rendón,C Roskas,A Samalan,K Skovpen,M Tytgat,N Van Den Bossche,B Vermassen,L Wezenbeek,A Benecke,G Bruno,F Bury,C Caputo,P David,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,V Lemaitre,K Mondal,A Taliercio,TT Tran,P Vischia,S Wertz,GA Alves,E Coelho,C Hensel,A Moraes,P Rebello Teles,WL Aldá Júnior,M Alves Gallo Pereira,M Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,V Dos Santos Sousa,S Fonseca De Souza,J Martins,C Mora Herrera,K Mota Amarilo,L Mundim,H Nogima,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,F Torres Da Silva De Araujo,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,PG Mercadante,SF Novaes,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,E Shumka,S Thakur,T Cheng,T Javaid,M Mittal,L Yuan,M Ahmad,G Bauer,Z Hu,S Lezki,K Yi,GM Chen,HS Chen,M Chen,F Iemmi,CH Jiang,A Kapoor

Journal

The European Physical Journal. C, Particles and Fields

Published Date

2023

A measurement of the jet mass distribution in hadronic decays of Lorentz-boosted top quarks is presented. The measurement is performed in the lepton+ jets channel of top quark pair production (tt) events, where the lepton is an electron or muon. The products of the hadronic top quark decay are reconstructed using a single large-radius jet with transverse momentum greater than 400 GeV. The data were collected with the CMS detector at the LHC in protonproton collisions and correspond to an integrated luminosity of 138 fb− 1. The differential tt production cross section as a function of the jet mass is unfolded to the particle level and is used to extract the top quark mass. The jet mass scale is calibrated using the hadronic W boson decay within the large-radius jet. The uncertainties in the modelling of the final state radiation are reduced by studying angular correlations in the jet substructure. These developments …

Study of the reactions , , and at center-of-mass energies from threshold to 4.5 GeV using initial-state radiation

Authors

JP Lees,V Poireau,V Tisserand,E Grauges,A Palano,G Eigen,David Nathan Brown,Yu G Kolomensky,M Fritsch,H Koch,R Cheaib,C Hearty,TS Mattison,JA McKenna,RY So,VE Blinov,AR Buzykaev,VP Druzhinin,EA Kozyrev,EA Kravchenko,SI Serednyakov,Yu I Skovpen,EP Solodov,K Yu Todyshev,AJ Lankford,B Dey,JW Gary,O Long,AM Eisner,WS Lockman,W Panduro Vazquez,DS Chao,CH Cheng,B Echenard,KT Flood,DG Hitlin,Y Li,DX Lin,S Middleton,TS Miyashita,P Ongmongkolkul,J Oyang,FC Porter,M Röhrken,BT Meadows,MD Sokoloff,JG Smith,SR Wagner,D Bernard,M Verderi,D Bettoni,C Bozzi,R Calabrese,G Cibinetto,E Fioravanti,I Garzia,E Luppi,V Santoro,A Calcaterra,R De Sangro,G Finocchiaro,S Martellotti,P Patteri,IM Peruzzi,M Piccolo,M Rotondo,A Zallo,S Passaggio,C Patrignani,BJ Shuve,HM Lacker,B Bhuyan,U Mallik,C Chen,J Cochran,S Prell,AV Gritsan,N Arnaud,M Davier,F Le Diberder,AM Lutz,G Wormser,DJ Lange,DM Wright,JP Coleman,DE Hutchcroft,DJ Payne,C Touramanis,AJ Bevan,F Di Lodovico,G Cowan,Sw Banerjee,CL Davis,AG Denig,W Gradl,K Griessinger,A Hafner,KR Schubert,RJ Barlow,GD Lafferty,R Cenci,A Jawahery,DA Roberts,R Cowan,SH Robertson,RM Seddon,N Neri,F Palombo,L Cremaldi,R Godang,DJ Summers,G De Nardo,C Sciacca,CP Jessop,JM LoSecco,K Honscheid,A Gaz,M Margoni,G Simi,F Simonetto,R Stroili,S Akar,E Ben-Haim,M Bomben,GR Bonneaud,G Calderini,J Chauveau,G Marchiori,J Ocariz,M Biasini,E Manoni,A Rossi,G Batignani,S Bettarini,M Carpinelli,G Casarosa,M Chrzaszcz,F Forti,MA Giorgi,A Lusiani,B Oberhof,E Paoloni,M Rama,G Rizzo,JJ Walsh,L Zani,AJS Smith,F Anulli,R Faccini,F Ferrarotto

Journal

Physical Review D

Published Date

2023/4/4

We study the processes e+ e−→ K+ K− π 0 π 0 π 0 γ, K S 0 K±π∓ π 0 π 0 γ, and K S 0 K±π∓ π+ π− γ in which an energetic photon is radiated from the initial state. The data were collected with the BABAR detector at the SLAC National Accelerator Laboratory. About 1200, 2600, and 6000 events, respectively, are selected from a data sample corresponding to an integrated luminosity of 469 fb− 1. The invariant mass of the hadronic final state defines the effective e+ e− center-of-mass energy. The center-of-mass energies range from threshold to 4.5 GeV. From the mass spectra, the first ever measurements of the e+ e−→ K+ K− π 0 π 0 π 0, e+ e−→ K S 0 K±π∓ π 0 π 0, and e+ e−→ K S 0 K±π∓ π+ π− cross sections are performed. The contributions from the intermediate states that include η, ϕ, ρ, K*(892), and other resonances are presented. We observe the J/ψ and ψ (2 S) in most of these final states and measure the …

Search for CP violation using events in the lepton+jets channel in pp collisions at = 13 TeV

Authors

Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,Alberto Escalante Del Valle,Rudolf Fruehwirth,Manfred Jeitler,N Krammer,L Lechner,D Liko,I Mikulec,P Paulitsch,FM Pitters,J Schieck,R Schöfbeck,D Schwarz,S Templ,W Waltenberger,C-E Wulz,MR Darwish,EA De Wolf,T Janssen,T Kello,A Lelek,H Rejeb Sfar,P Van Mechelen,S Van Putte,ES Bols,J D’Hondt,A De Moor,M Delcourt,H El Faham,S Lowette,S Moortgat,A Morton,D Müller,AR Sahasransu,S Tavernier,W Van Doninck,D Vannerom,D Beghin,B Bilin,B Clerbaux,G De Lentdecker,L Favart,AK Kalsi,K Lee,M Mahdavikhorrami,I Makarenko,L Moureaux,S Paredes,L Pétré,A Popov,N Postiau,E Starling,L Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,T Cornelis,D Dobur,J Knolle,L Lambrecht,G Mestdach,M Niedziela,C Rendón,C Roskas,A Samalan,K Skovpen,M Tytgat,N Van Den Bossche,B Vermassen,L Wezenbeek,A Benecke,A Bethani,G Bruno,F Bury,C Caputo,P David,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,V Lemaitre,K Mondal,J Prisciandaro,A Taliercio,M Teklishyn,TT Tran,P Vischia,S Wertz,GA Alves,C Hensel,A Moraes,P Rebello Teles,WL Aldá Júnior,M Alves Gallo Pereira,Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,V Dos Santos Sousa,S Fonseca De Souza,C Mora Herrera,K Mota Amarilo,L Mundim,H Nogima,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,F Torres Da Silva De Araujo,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,DS Lemos,PG Mercadante,SF Novaes,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,T Cheng,T Javaid,M Mittal,L Yuan,M Ahmad,G Bauer,C Dozen,Z Hu

Journal

Journal of High Energy Physics

Published Date

2023/6

Results are presented on a search for CP violation in the production and decay of top quark-antiquark pairs in the lepton+ jets channel. The search is based on data from proton-proton collisions at= 13 TeV, collected with the CMS detector, corresponding to an integrated luminosity of 138 fb− 1. Possible CP violation effects are evaluated by measuring asymmetries in observables constructed from linearly independent four-momentum vectors of the final-state particles. The dimensionless chromoelectric dipole moment of the top quark obtained from the observed asymmetries is measured to be 0. 04±0. 10 (stat)±0. 07 (syst), and the asymmetries exhibit no evidence for CP-violating effects, consistent with expectations from the standard model.

Search for CP violation in t H and tH production in multilepton channels in proton-proton collisions at = 13 TeV

Authors

Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,Alberto Escalante Del Valle,Priya Sajid Hussain,Manfred Jeitler,Natascha Krammer,Lukas Lechner,Dietrich Liko,Ivan Mikulec,Peter Paulitsch,Florian Michael Pitters,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Sebastian Templ,Wolfgang Waltenberger,C-E Wulz,Mohamed Rashad Darwish,Tahys Janssen,Tomas Kello,H Rejeb Sfar,Pierre Van Mechelen,Emil Sørensen Bols,Jorgen D’Hondt,Alexandre De Moor,Martin Delcourt,Hesham El Faham,Steven Lowette,Seth Moortgat,Alexander Morton,Denise Müller,Abanti Ranadhir Sahasransu,Stefaan Tavernier,Walter Van Doninck,David Vannerom,Barbara Clerbaux,Gilles De Lentdecker,Laurent Favart,Johny Jaramillo,K Lee,Mostafa Mahdavikhorrami,Inna Makarenko,Andrea Malara,Santiago Paredes,Laurent Pétré,Nicolas Postiau,Elizabeth Starling,Laurent Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,Didar Dobur,Joscha Knolle,Luka Lambrecht,Gianny Mestdach,Marek Niedziela,Cesar Rendón,Christos Roskas,Amrutha Samalan,Kirill Skovpen,Michael Tytgat,Niels Van den Bossche,Basile Vermassen,Liam Wezenbeek,A Benecke,G Bruno,F Bury,C Caputo,P David,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,Vincent Lemaitre,Kuntal Mondal,Jessica Prisciandaro,Angela Taliercio,Tu Thong Tran,Pietro Vischia,Sébastien Wertz,GA Alves,Eduardo Coelho,Carsten Hensel,Arthur Moraes,P Rebello Teles,WL Aldá Júnior,M Alves Gallo Pereira,Barroso Ferreira Filho,H Brandao Malbouisson,Wagner Carvalho,Jose Chinellato,Eliza Melo Da Costa,Gustavo Gil Da Silveira,Dilson de Jesus Damiao,Vitor Dos Santos Sousa,S Fonseca De Souza,Jordan Martins,C Mora Herrera,K Mota Amarilo,Luiz Mundim,Helio Nogima,Alberto Santoro,SM Silva Do Amaral,Andre Sznajder,Mauricio Thiel,F Torres Da Silva De Araujo,A Vilela Pereira,Cesar Augusto Bernardes,Luigi Calligaris,TR Fernandez Perez Tomei,EM Gregores,Pedro G Mercadante,Sergio F Novaes,Sandra S Padula,Aleksandar Aleksandrov,Georgy Antchev,Roumyana Hadjiiska,Plamen Iaydjiev,Milena Misheva,Mircho Rodozov,Mariana Shopova,Georgi Sultanov,Anton Dimitrov,Todor Ivanov,Leander Litov,Borislav Pavlov,Peicho Petkov,Anton Petrov,Elton Shumka,Tongguang Cheng,Tahir Javaid,Monika Mittal,L Yuan,Muhammad Ahmad,Gerry Bauer,Zhen Hu,Samet Lezki,Kai Yi,Guo-Ming Chen,He-Sheng Chen,Mingshui Chen,Fabio Iemmi,Chun-Hua Jiang,Anshul Kapoor

Journal

Journal of High Energy Physics

Published Date

2023/7

The charge-parity (CP) structure of the Yukawa interaction between the Higgs (H) boson and the top quark is measured in a data sample enriched in the t H and tH associated production, using 138 fb− 1 of data collected in proton-proton collisions at= 13 TeV by the CMS experiment at the CERN LHC. The study targets events where the H boson decays via H→ WW or H→ ττ and the top quarks decay via t→ Wb: the W bosons decay either leptonically or hadronically, and final states characterized by the presence of at least two leptons are studied. Machine learning techniques are applied to these final states to enhance the separation of CP-even from CP-odd scenarios. Two-dimensional confidence regions are set on κ t and t, which are respectively defined as the CP-even and CP-odd top-Higgs Yukawa coupling modifiers. No significant fractional CP-odd contributions, parameterized by the quantity|| are observed; the …

Search for physics beyond the standard model in top quark production with additional leptons in the context of effective field theory

Authors

Aram Hayrapetyan,Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,Alberto Escalante Del Valle,Priya Sajid Hussain,Manfred Jeitler,Natascha Krammer,Dietrich Liko,Ivan Mikulec,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Mangesh Sonawane,Sebastian Templ,Wolfgang Waltenberger,C-E Wulz,Mohamed Rashad Darwish,Tahys Janssen,Pierre Van Mechelen,Emil Sørensen Bols,Jorgen D’Hondt,Soumya Dansana,Alexandre De Moor,Martin Delcourt,Hesham El Faham,Steven Lowette,Inna Makarenko,Alexander Morton,Denise Müller,Abanti Ranadhir Sahasransu,Stefaan Tavernier,Michael Tytgat,Senne Van Putte,David Vannerom,Barbara Clerbaux,Gilles De Lentdecker,Laurent Favart,Dmytro Hohov,Johny Jaramillo,Ali Khalilzadeh,Kyeongpil Lee,Mostafa Mahdavikhorrami,Andrea Malara,Santiago Paredes,Laurent Pétré,Nicolas Postiau,Laurent Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,M De Coen,D Dobur,J Knolle,L Lambrecht,G Mestdach,C Rendón,A Samalan,K Skovpen,N Van Den Bossche,L Wezenbeek,A Benecke,G Bruno,C Caputo,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,V Lemaitre,J Lidrych,P Mastrapasqua,K Mondal,TT Tran,S Wertz,GA Alves,E Coelho,C Hensel,T Menezes De Oliveira,A Moraes,P Rebello Teles,M Soeiro,WL Aldá Júnior,M Alves Gallo Pereira,Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,S Fonseca De Souza,J Martins,C Mora Herrera,K Mota Amarilo,L Mundim,H Nogima,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,PG Mercadante,SF Novaes,B Orzari,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,E Shumka,S Keshri,S Thakur,T Cheng,Q Guo,T Javaid,M Mittal,L Yuan,G Bauer,Z Hu,K Yi,GM Chen,HS Chen,M Chen,F Iemmi,CH Jiang,A Kapoor,H Liao,Z-A Liu,F Monti,R Sharma,JN Song,J Tao

Journal

Journal of High Energy Physics

Published Date

2023/12

A search for new physics in top quark production with additional final-state leptons is performed using data collected by the CMS experiment in proton-proton collisions at= 13 TeV at the LHC during 2016–2018. The data set corresponds to an integrated luminosity of 138 fb− 1. Using the framework of effective field theory (EFT), potential new physics effects are parametrized in terms of 26 dimension-six EFT operators. The impacts of EFT operators are incorporated through the event-level reweighting of Monte Carlo simulations, which allows for detector-level predictions. The events are divided into several categories based on lepton multiplicity, total lepton charge, jet multiplicity, and b-tagged jet multiplicity. Kinematic variables corresponding to the transverse momentum (p T) of the leading pair of leptons and/or jets as well as the p T of on-shell Z bosons are used to extract the 95% confidence intervals of the 26 …

First measurement of the top quark pair production cross section in proton-proton collisions at = 13.6 TeV

Authors

Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,Alberto Escalante Del Valle,Priya Sajid Hussain,Manfred Jeitler,Natascha Krammer,Lukas Lechner,Dietrich Liko,Ivan Mikulec,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Mangesh Sonawane,Sebastian Templ,Wolfgang Waltenberger,C-E Wulz,Mohamed Rashad Darwish,Tahys Janssen,Tomas Kello,Pierre Van Mechelen,Emil Sørensen Bols,Jorgen D’Hondt,Alexandre De Moor,Martin Delcourt,Hesham El Faham,Steven Lowette,Alexander Morton,Denise Müller,Abanti Ranadhir Sahasransu,Stefaan Tavernier,Walter Van Doninck,Senne Van Putte,David Vannerom,Barbara Clerbaux,Soumya Dansana,Gilles De Lentdecker,Laurent Favart,Dmytro Hohov,Johny Jaramillo,Kyeongpil Lee,Mostafa Mahdavikhorrami,Inna Makarenko,Andrea Malara,Santiago Paredes,Laurent Pétré,Nicolas Postiau,Laurent Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,Didar Dobur,Joscha Knolle,Luka Lambrecht,Gianny Mestdach,Cesar Rendón,Amrutha Samalan,Kirill Skovpen,Michael Tytgat,Niels Van den Bossche,Basile Vermassen,Liam Wezenbeek,A Benecke,G Bruno,F Bury,C Caputo,P David,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,Vincent Lemaitre,Jindrich Lidrych,Kuntal Mondal,Tu Thong Tran,Pietro Vischia,Sébastien Wertz,GA Alves,Eduardo Coelho,Carsten Hensel,Arthur Moraes,P Rebello Teles,WL Aldá Júnior,M Alves Gallo Pereira,Barroso Ferreira Filho,H Brandao Malbouisson,Wagner Carvalho,Jose Chinellato,Eliza Melo Da Costa,Gustavo Gil Da Silveira,Dilson de Jesus Damiao,Vitor Dos Santos Sousa,S Fonseca De Souza,Jordan Martins,C Mora Herrera,Kevin Mota Amarilo,Luiz Mundim,Helio Nogima,Alberto Santoro,SM Silva Do Amaral,Andre Sznajder,Mauricio Thiel,A Vilela Pereira,Cesar Augusto Bernardes,Luigi Calligaris,TR Fernandez Perez Tomei,EM Gregores,Pedro G Mercadante,Sergio F Novaes,Breno Orzari,Sandra S Padula,Aleksandar Aleksandrov,Georgy Antchev,Roumyana Hadjiiska,Plamen Iaydjiev,Milena Misheva,Mircho Rodozov,Mariana Shopova,Georgi Sultanov,Anton Dimitrov,Todor Ivanov,Leander Litov,Borislav Pavlov,Peicho Petkov,Anton Petrov,Elton Shumka,Sumit Keshri,Shalini Thakur,Tongguang Cheng,Qianying Guo,Tahir Javaid,Monika Mittal,Li Yuan,Gerry Bauer,Zhen Hu,Samet Lezki,Kai Yi,Guo-Ming Chen,He-Sheng Chen,Mingshui Chen,Fabio Iemmi,Chun-Hua Jiang,Anshul Kapoor,Hongbo Liao,Z-A Liu

Journal

Journal of high energy physics

Published Date

2023/8

The first measurement of the top quark pair () production cross section in proton-proton collisions at= 13. 6 TeV is presented. Data recorded with the CMS detector at the CERN LHC in Summer 2022, corresponding to an integrated luminosity of 1. 21 fb− 1, are analyzed. Events are selected with one or two charged leptons (electrons or muons) and additional jets. A maximum likelihood fit is performed in event categories defined by the number and flavors of the leptons, the number of jets, and the number of jets identified as originating from b quarks. An inclusive production cross section of 881±23 (stat+ syst)±20 (lumi) pb is measured, in agreement with the standard model prediction of pb.

Measurement of the Bs0→ μ+ μ− decay properties and search for the B0→ μ+ μ− decay in proton-proton collisions at s= 13TeV

Authors

Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,A Escalante Del Valle,Priya Sajid Hussain,Manfred Jeitler,Natascha Krammer,Lukas Lechner,Dietrich Liko,Ivan Mikulec,Peter Paulitsch,Florian Michael Pitters,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Mangesh Sonawane,Sebastian Templ,Wolfgang Waltenberger,C-E Wulz,Mohamed Rashad Darwish,Tahys Janssen,Tomas Kello,H Rejeb Sfar,Pierre Van Mechelen,Emil Sørensen Bols,Jorgen d'Hondt,Alexandre De Moor,Martin Delcourt,Hesham El Faham,Steven Lowette,Seth Moortgat,Alexander Morton,Denise Müller,Abanti Ranadhir Sahasransu,Stefaan Tavernier,Walter Van Doninck,David Vannerom,Barbara Clerbaux,Gilles De Lentdecker,Laurent Favart,Dmytro Hohov,Johny Jaramillo,Kyeongpil Lee,Mostafa Mahdavikhorrami,Inna Makarenko,Andrea Malara,Santiago Paredes,Laurent Pétré,Nicolas Postiau,Laurent Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,Didar Dobur,Joscha Knolle,Luka Lambrecht,Gianny Mestdach,Cesar Rendón,Amrutha Samalan,Kirill Skovpen,Michael Tytgat,Niels Van den Bossche,Basile Vermassen,Liam Wezenbeek,A Benecke,G Bruno,F Bury,C Caputo,P David,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,V Lemaitre,K Mondal,A Taliercio,TT Tran,P Vischia,S Wertz,GA Alves,E Coelho,C Hensel,A Moraes,P Rebello Teles,WL Aldá Júnior,M Alves Gallo Pereira,M Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,V Dos Santos Sousa,S Fonseca De Souza,J Martins,C Mora Herrera,K Mota Amarilo,L Mundim,H Nogima,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,PG Mercadante,SF Novaes,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,E Shumka,S Thakur,T Cheng,T Javaid,M Mittal,L Yuan,M Ahmad,G Bauer,Z Hu,S Lezki,K Yi,GM Chen,HS Chen,M Chen,F Iemmi,CH Jiang,A Kapoor,H Liao,Z-A Liu

Journal

Physics Letters B

Published Date

2023/7/10

Measurements are presented of the B s 0→ μ+ μ− branching fraction and effective lifetime, as well as results of a search for the B 0→ μ+ μ− decay in proton-proton collisions at s= 13 TeV at the LHC. The analysis is based on data collected with the CMS detector in 2016–2018 corresponding to an integrated luminosity of 140 fb− 1. The branching fraction of the B s 0→ μ+ μ− decay and the effective B s 0 meson lifetime are the most precise single measurements to date. No evidence for the B 0→ μ+ μ− decay has been found. All results are found to be consistent with the standard model predictions and previous measurements.

Measurement of the tt¯ charge asymmetry in events with highly Lorentz-boosted top quarks in pp collisions at s= 13 TeV

Authors

Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,A Escalante Del Valle,Priya Sajid Hussain,Manfred Jeitler,Natascha Krammer,Lukas Lechner,Dietrich Liko,Ivan Mikulec,Peter Paulitsch,Florian Michael Pitters,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Mangesh Sonawane,Sebastian Templ,Wolfgang Waltenberger,C-E Wulz,Mohamed Rashad Darwish,Tahys Janssen,Tomas Kello,H Rejeb Sfar,Pierre Van Mechelen,Emil Sørensen Bols,Jorgen d'Hondt,Alexandre De Moor,Martin Delcourt,Hesham El Faham,Steven Lowette,Seth Moortgat,Alexander Morton,Denise Müller,Abanti Ranadhir Sahasransu,Stefaan Tavernier,Walter Van Doninck,David Vannerom,Barbara Clerbaux,Gilles De Lentdecker,Laurent Favart,Dmytro Hohov,Johny Jaramillo,Kyeongpil Lee,Mostafa Mahdavikhorrami,Inna Makarenko,Andrea Malara,Santiago Paredes,Laurent Pétré,Nicolas Postiau,Laurent Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,D Dobur,J Knolle,L Lambrecht,G Mestdach,M Niedziela,C Rendón,C Roskas,A Samalan,K Skovpen,M Tytgat,N Van Den Bossche,B Vermassen,L Wezenbeek,A Benecke,G Bruno,F Bury,C Caputo,P David,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,V Lemaitre,K Mondal,A Taliercio,TT Tran,P Vischia,S Wertz,GA Alves,E Coelho,C Hensel,A Moraes,P Rebello Teles,WL Aldá Júnior,M Alves Gallo Pereira,M Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,V Dos Santos Sousa,S Fonseca De Souza,J Martins,C Mora Herrera,K Mota Amarilo,L Mundim,H Nogima,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,F Torres Da Silva De Araujo,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,PG Mercadante,SF Novaes,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,E Shumka,S Thakur,T Cheng,T Javaid,M Mittal,L Yuan,M Ahmad,G Bauer,Z Hu,S Lezki,K Yi,GM Chen,HS Chen,M Chen,F Iemmi,CH Jiang

Journal

Physics Letters B

Published Date

2023/11/10

The measurement of the charge asymmetry in top quark pair events with highly Lorentz-boosted top quarks decaying to a single lepton and jets is presented. The analysis is performed using proton-proton collisions at s= 13 TeV with the CMS detector at the LHC and corresponding to an integrated luminosity of 138 fb− 1. The selection is optimized for top quarks produced with large Lorentz boosts, resulting in nonisolated leptons and overlapping jets. The top quark charge asymmetry is measured for events with a t t¯ invariant mass larger than 750 GeV and corrected for detector and acceptance effects using a binned maximum likelihood fit. The measured top quark charge asymmetry of (0.42− 0.69+ 0.64)% is in good agreement with the standard model prediction at next-to-next-to-leading order in quantum chromodynamic perturbation theory with next-to-leading-order electroweak corrections. The result is also …

Measurement of the Dependence of the Hadron Production Fraction Ratios fs/fu and fd/fu on B Meson Kinematic Variables in Proton-Proton Collisions at s= 13 TeV

Authors

Armen Tumasyan,W Adam,JW Andrejkovic,T Bergauer,S Chatterjee,K Damanakis,M Dragicevic,A Escalante Del Valle,PS Hussain,M Jeitler,N Krammer,L Lechner,D Liko,I Mikulec,P Paulitsch,J Schieck,R Schöfbeck,D Schwarz,M Sonawane,S Templ,W Waltenberger,CE Wulz,MR Darwish,Tahys Janssen,T Kello,H Rejeb Sfar,P Van Mechelen,ES Bols,J D’Hondt,A De Moor,M Delcourt,H El Faham,S Lowette,A Morton,D Müller,AR Sahasransu,S Tavernier,W Van Doninck,S Van Putte,D Vannerom,B Clerbaux,G De Lentdecker,L Favart,D Hohov,J Jaramillo,K Lee,M Mahdavikhorrami,I Makarenko,A Malara,S Paredes,L Pétré,N Postiau,L Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,D Dobur,J Knolle,L Lambrecht,G Mestdach,C Rendón,A Samalan,K Skovpen,M Tytgat,N Van Den Bossche,B Vermassen,L Wezenbeek,A Benecke,G Bruno,F Bury,C Caputo,P David,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,V Lemaitre,K Mondal,A Taliercio,TT Tran,P Vischia,S Wertz,GA Alves,E Coelho,C Hensel,A Moraes,P Rebello Teles,WL Aldá Júnior,M Alves Gallo Pereira,Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,V Dos Santos Sousa,S Fonseca De Souza,J Martins,C Mora Herrera,K Mota Amarilo,L Mundim,H Nogima,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,A Vilela Pereira,CA Bernardes,L Calligaris,TR Tomei,EM Gregores,PG Mercadante,SF Novaes,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,E Shumka,S Thakur,T Cheng,T Javaid,M Mittal,L Yuan,M Ahmad,G Bauer,Z Hu,S Lezki,K Yi,GM Chen,HS Chen,M Chen,F Iemmi,CH Jiang,A Kapoor,H Liao,ZA Liu,V Milosevic

Journal

Physical review letters

Published Date

2023/9/19

The dependence of the ratio between the B s 0 and B+ hadron production fractions, f s/f u, on the transverse momentum (p T) and rapidity of the B mesons is studied using the decay channels B s 0→ J/ψ ϕ and B+→ J/ψ K+. The analysis uses a data sample of proton-proton collisions at a center-of-mass energy of 13 TeV, collected by the CMS experiment in 2018 and corresponding to an integrated luminosity of 61.6 fb− 1. The f s/f u ratio is observed to depend on the B p T and to be consistent with becoming asymptotically constant at large p T. No rapidity dependence is observed. The ratio of the B 0 to B+ meson production fractions, f d/f u, is also measured, for the first time in proton-proton collisions, using the B 0→ J/ψ K* 0 decay channel. The result is found to be within 1 standard deviation of unity and independent of p T and rapidity, as expected from isospin invariance.

Measurements of Higgs boson production in the decay channel with a pair of leptons in proton-proton collisions at = 13 TeV

Authors

Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,A Escalante Del Valle,Rudolf Fruehwirth,Manfred Jeitler,N Krammer,L Lechner,D Liko,I Mikulec,P Paulitsch,FM Pitters,J Schieck,R Schöfbeck,D Schwarz,S Templ,W Waltenberger,C-E Wulz,MR Darwish,EA De Wolf,Tahys Janssen,T Kello,A Lelek,H Rejeb Sfar,P Van Mechelen,S Van Putte,N Van Remortel,ES Bols,J D’Hondt,A De Moor,M Delcourt,H El Faham,S Lowette,S Moortgat,A Morton,D Müller,AR Sahasransu,S Tavernier,W Van Doninck,D Vannerom,D Beghin,B Bilin,B Clerbaux,G De Lentdecker,L Favart,AK Kalsi,K Lee,M Mahdavikhorrami,I Makarenko,S Paredes,L Pétré,A Popov,N Postiau,E Starling,L Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,T Cornelis,D Dobur,J Knolle,L Lambrecht,G Mestdach,M Niedziela,C Rendón,C Roskas,A Samalan,K Skovpen,M Tytgat,N Van Den Bossche,B Vermassen,L Wezenbeek,A Benecke,A Bethani,G Bruno,F Bury,C Caputo,P David,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,V Lemaitre,K Mondal,J Prisciandaro,A Taliercio,M Teklishyn,TT Tran,P Vischia,S Wertz,GA Alves,C Hensel,A Moraes,P Rebello Teles,WL Aldá Júnior,M Alves Gallo Pereira,M Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,V Dos Santos Sousa,S Fonseca De Souza,J Martins,C Mora Herrera,K Mota Amarilo,L Mundim,H Nogima,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,F Torres Da Silva De Araujo,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,DS Lemos,PG Mercadante,SF Novaes,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,T Cheng,T Javaid,M Mittal,L Yuan,M Ahmad,G Bauer,C Dozen

Journal

The European Physical Journal C

Published Date

2023/7/4

Measurements of Higgs boson production, where the Higgs boson decays into a pair of τ leptons, are presented, using a sample of proton-proton collisions collected with the CMS experiment at a center-of-mass energy of, corresponding to an integrated luminosity of 138 fb-1. Three analyses are presented. Two are targeting Higgs boson production via gluon fusion and vector boson fusion: a neural network based analysis and an analysis based on an event categorization optimized on the ratio of signal over background events. These are complemented by an analysis targeting vector boson associated Higgs boson production. Results are presented in the form of signal strengths relative to the standard model predictions and products of cross sections and branching fraction to τ leptons, in up to 16 different kinematic regions. For the simultaneous measurements of the neural network based analysis and the …

Search for Exotic Higgs Boson Decays H→ AA→ 4γ with Events Containing Two Merged Diphotons in Proton-Proton Collisions at s= 13 TeV

Authors

Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,Alberto Escalante Del Valle,Priya Sajid Hussain,Manfred Jeitler,Natascha Krammer,Lukas Lechner,Dietrich Liko,Ivan Mikulec,Peter Paulitsch,Florian Michael Pitters,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Sebastian Templ,Wolfgang Waltenberger,Claudia-Elisabeth Wulz,Mohamed Rashad Darwish,Tahys Janssen,Tomas Kello,H Rejeb Sfar,Pierre Van Mechelen,Emil Sørensen Bols,Jorgen D’Hondt,Alexandre De Moor,Martin Delcourt,Hesham El Faham,Steven Lowette,Seth Moortgat,Alexander Morton,Denise Müller,Abanti Ranadhir Sahasransu,Stefaan Tavernier,Walter Van Doninck,David Vannerom,Barbara Clerbaux,Gilles De Lentdecker,Laurent Favart,Dmytro Hohov,Johny Jaramillo,Kyeongpil Lee,Mostafa Mahdavikhorrami,Inna Makarenko,Andrea Malara,Santiago Paredes,Laurent Pétré,Nicolas Postiau,Elizabeth Starling,Laurent Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,D Dobur,J Knolle,L Lambrecht,G Mestdach,M Niedziela,C Rendón,C Roskas,A Samalan,K Skovpen,M Tytgat,N Van Den Bossche,B Vermassen,L Wezenbeek,A Benecke,G Bruno,F Bury,C Caputo,P David,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,V Lemaitre,K Mondal,J Prisciandaro,A Taliercio,TT Tran,P Vischia,S Wertz,GA Alves,E Coelho,C Hensel,A Moraes,P Rebello Teles,WL Aldá Júnior,M Alves Gallo Pereira,Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,V Dos Santos Sousa,S Fonseca De Souza,J Martins,C Mora Herrera,K Mota Amarilo,L Mundim,H Nogima,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,F Torres Da Silva De Araujo,A Vilela Pereira,CA Bernardes,L Calligaris,TR Tomei,EM Gregores,PG Mercadante,SF Novaes,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,E Shumka,T Cheng,T Javaid,M Mittal,L Yuan,M Ahmad,G Bauer,Z Hu,S Lezki,K Yi,GM Chen,HS Chen,M Chen,F Iemmi,CH Jiang

Journal

Physical review letters

Published Date

2023/9/5

We present the first direct search for exotic Higgs boson decays H→ AA, A→ γ γ in events with two photonlike objects. The hypothetical particle A is a low-mass spin-0 particle decaying promptly to a merged diphoton reconstructed as a single photonlike object. We analyze the data collected by the CMS experiment at s= 13 TeV corresponding to an integrated luminosity of 136 fb− 1. No excess above the estimated background is found. We set upper limits on the branching fraction B (H→ A A→ 4 γ) of (0.9–3.3)× 10− 3 at 95% confidence level for masses of A in the range 0.1–1.2 GeV.

Search for the lepton-flavor violating decay of the Higgs boson and additional Higgs bosons in the eμ final state in proton-proton collisions at s= 13 TeV

Authors

Aram Hayrapetyan,Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,Alberto Escalante Del Valle,Priya Sajid Hussain,Manfred Jeitler,Natascha Krammer,Lukas Lechner,Dietrich Liko,Ivan Mikulec,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Mangesh Sonawane,Sebastian Templ,Wolfgang Waltenberger,Claudia-Elisabeth Wulz,Mohamed Rashad Darwish,Tahys Janssen,Tomas Kello,Pierre Van Mechelen,Emil Sørensen Bols,Jorgen D’Hondt,Alexandre De Moor,Martin Delcourt,Hesham El Faham,Steven Lowette,Inna Makarenko,Alexander Morton,Denise Müller,Abanti Ranadhir Sahasransu,Stefaan Tavernier,Senne Van Putte,David Vannerom,Barbara Clerbaux,Soumya Dansana,Gilles De Lentdecker,Laurent Favart,Dmytro Hohov,Johny Jaramillo,Kyeongpil Lee,Mostafa Mahdavikhorrami,Andrea Malara,Santiago Paredes,Laurent Pétré,Nicolas Postiau,Laurent Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,Maarten De Coen,Didar Dobur,Joscha Knolle,Luka Lambrecht,Gianny Mestdach,Cesar Rendón,Amrutha Samalan,Kirill Skovpen,Michael Tytgat,Niels Van den Bossche,Basile Vermassen,Liam Wezenbeek,A Benecke,G Bruno,F Bury,C Caputo,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,V Lemaitre,J Lidrych,P Mastrapasqua,K Mondal,TT Tran,S Wertz,GA Alves,E Coelho,C Hensel,A Moraes,P Rebello Teles,WL Aldá Júnior,M Alves Gallo Pereira,Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,V Dos Santos Sousa,S Fonseca De Souza,J Martins,C Mora Herrera,Kevin Mota Amarilo,L Mundim,H Nogima,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,A Vilela Pereira,CA Bernardes,L Calligaris,TR Tomei,EM Gregores,PG Mercadante,SF Novaes,B Orzari,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,E Shumka,S Keshri,S Thakur,T Cheng,Q Guo,T Javaid,M Mittal,L Yuan,G Bauer,Z Hu,K Yi,GM Chen,HS Chen,M Chen,F Iemmi,CH Jiang,A Kapoor,H Liao,ZA Liu,F Monti,R Sharma

Journal

Physical Review D

Published Date

2023/10/10

A search for the lepton-flavor violating decay of the Higgs boson and potential additional Higgs bosons with a mass in the range 110–160 GeV to an e±μ∓ pair is presented. The search is performed with a proton-proton collision dataset at a center-of-mass energy of 13 TeV collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 138 fb− 1. No excess is observed for the Higgs boson. The observed (expected) upper limit on the e±μ∓ branching fraction for it is determined to be 4.4 (4.7)× 10− 5 at 95% confidence level, the most stringent limit set thus far from direct searches. The largest excess of events over the expected background in the full mass range of the search is observed at an e±μ∓ invariant mass of approximately 146 GeV with a local (global) significance of 3.8 (2.8) standard deviations.

First measurement of the forward rapidity gap distribution in pPb collisions at√ s NN= 8. 16 TeV

Authors

Armen Tumasyan,Wolfgang Adam,Federico Ambrogi,Thomas Bergauer,Marko Dragicevic,Janos Erö,Alberto Escalante Del Valle,Rudolf Fruehwirth,Manfred Jeitler,Natascha Krammer,L Lechner,D Liko,T Madlener,I Mikulec,FM Pitters,N Rad,J Schieck,R Schöfbeck,M Spanring,S Templ,W Waltenberger,CE Wulz,M Zarucki,MR Darwish,EA De Wolf,D Di Croce,T Janssen,T Kello,A Lelek,M Pieters,H Rejeb Sfar,H Van Haevermaet,P Van Mechelen,S Van Putte,F Blekman,ES Bols,SS Chhibra,J D’Hondt,J De Clercq,D Lontkovskyi,S Lowette,I Marchesini,S Moortgat,A Morton,Q Python,S Tavernier,W Van Doninck,P Van Mulders,D Beghin,B Bilin,B Clerbaux,G De Lentdecker,B Dorney,L Favart,A Grebenyuk,AK Kalsi,I Makarenko,L Moureaux,L Pétré,A Popov,N Postiau,E Starling,L Thomas,C Vander Velde,P Vanlaer,D Vannerom,Liam Wezenbeek,Tom Cornelis,Didar Dobur,M Gruchala,Illia Khvastunov,Marek Niedziela,Christos Roskas,Kirill Skovpen,Michael Tytgat,Willem Verbeke,Basile Vermassen,Martina Vit,G Bruno,F Bury,C Caputo,P David,C Delaere,M Delcourt,IS Donertas,A Giammanco,V Lemaitre,K Mondal,J Prisciandaro,A Taliercio,M Teklishyn,P Vischia,S Wuyckens,J Zobec,GA Alves,C Hensel,A Moraes,WL Aldá Júnior,E Belchior Batista Das Chagas,H Brandao Malbouisson,W Carvalho,J Chinellato,E Coelho,EM Da Costa,GG Da Silveira,D De Jesus Damiao,S Fonseca De Souza,J Martins,D Matos Figueiredo,M Medina Jaime,M Melo De Almeida,C Mora Herrera,L Mundim,H Nogima,P Rebello Teles,LJ Sanchez Rosas,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,EJ Tonelli Manganote,F Torres Da Silva De Araujo,A Vilela Pereira,CA Bernardes,L Calligaris,TR Tomei,EM Gregores,DS Lemos,PG Mercadante,SF Novaes,Sandra S Padula,A Aleksandrov,G Antchev,I Atanassov,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,M Bonchev,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,W Fang,Qianying Guo,H Wang

Journal

Physical Review D

Published Date

2023/11/20

For the first time at LHC energies, the forward rapidity gap spectra from proton-lead collisions for both proton and lead dissociation processes are presented. The analysis is performed over 10.4 units of pseudorapidity at a center-of-mass energy per nucleon pair of s NN= 8.16 TeV, almost 300 times higher than in previous measurements of diffractive production in proton-nucleus collisions. For lead dissociation processes, which correspond to the pomeron-lead event topology, the epos-lhc generator predictions are a factor of 2 below the data, but the model gives a reasonable description of the rapidity gap spectrum shape. For the pomeron-proton topology, the epos-lhc, qgsjet ii, and hijing predictions are all at least a factor of 5 lower than the data. The latter effect might be explained by a significant contribution of ultraperipheral photoproduction events mimicking the signature of diffractive processes. These data may be of significant help in understanding the high energy limit of quantum chromodynamics and for modeling cosmic ray air showers.

Test beam performance of a CBC3-based mini-module for the Phase-2 CMS Outer Tracker before and after neutron irradiation

Authors

Wolfgang Adam,T Bergauer,K Damanakis,M Dragicevic,R Frühwirth,H Steininger,W Beaumont,MR Darwish,Tahys Janssen,T Kello,H Rejeb Sfar,P Van Mechelen,N Breugelmans,M Delcourt,A De Moor,J d'Hondt,F Heyen,S Lowette,I Makarenko,D Muller,AR Sahasransu,D Vannerom,S Van Putte,Y Allard,B Clerbaux,S Dansana,G De Lentdecker,H Evard,L Favart,D Hohov,A Khalilzadeh,K Lee,M Mahdavikhorrami,A Malara,S Paredes,N Postiau,F Robert,L Thomas,M Vanden Bemden,P Vanlaer,Y Yang,A Benecke,G Bruno,F Bury,C Caputo,J De Favereau,C Delaere,IS Donertas,A Giammanco,K Jaffel,S Jain,V Lemaitre,K Mondal,N Szilasi,TT Tran,S Wertz,L Calligaris,V Brigljević,B Chitroda,D Ferenček,S Mishra,A Starodumov,T Šuša,E Brücken,T Lampén,L Martikainen,E Tuominen,A Karadzhinova-Ferrer,P Luukka,H Petrow,T Tuuva,J-L Agram,J Andrea,D Apparu,D Bloch,C Bonnin,J-M Brom,E Chabert,L Charles,C Collard,E Dangelser,S Falke,U Goerlach,L Gross,C Haas,M Krauth,N Ollivier-Henry,G Baulieu,A Bonnevaux,G Boudoul,L Caponetto,N Chanon,D Contardo,T Dupasquier,G Galbit,M Marchisone,L Mirabito,B Nodari,E Schibler,F Schirra,M Vander Donckt,S Viret,V Botta,C Ebisch,L Feld,W Karpinski,K Klein,M Lipinski,D Louis,D Meuser,I Özen,A Pauls,G Pierschel,N Röwert,M Teroerde,M Wlochal,C Dziwok,G Fluegge,O Pooth,A Stahl,T Ziemons,A Agah,S Bhattacharya,F Blekman,A Campbell,A Cardini,C Cheng,S Consuegra Rodriguez,G Eckerlin,D Eckstein,E Gallo,M Guthoff,C Kleinwort,R Mankel,H Maser,C Muhl,A Mussgiller,A Nürnberg,Y Otarid,D Perez Adan,H Petersen,D Rastorguev,O Reichelt,P Schütze,L Sreelatha Pramod,R Stever,A Velyka,A Ventura Barroso,R Walsh,A Zuber

Journal

Journal of Instrumentation

Published Date

2023/4/4

The Large Hadron Collider (LHC) at CERN will undergo major upgrades to increase the instantaneous luminosity up to 5–7.5× 1034 cm− 2s− 1. This High Luminosity upgrade of the LHC (HL-LHC)[1] will provide an unprecedented sample of proton-proton collision data at a center-of-mass energy of 13–14 TeV, extending significantly the discovery potential of direct searches for new phenomena and the sensitivity of the precision measurement program. Compared to the LHC, the luminosity upgrade will increase the collision rates, detector occupancies, and the radiation induced damage. To cope with these challenging experimental conditions, the entire silicon tracking system of the CMS experiment [2] will be upgraded [3] with a new tracker, which will include an Inner Tracker based on silicon pixel modules and an Outer Tracker made from silicon modules with strip and macro-pixel sensors.The new CMS Outer …

Search for top squarks in the four-body decay mode with single lepton final states in proton-proton collisions at = 13 TeV

Authors

Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,Alberto Escalante Del Valle,Priya Sajid Hussain,Manfred Jeitler,Natascha Krammer,Lukas Lechner,Dietrich Liko,Ivan Mikulec,Peter Paulitsch,Florian Michael Pitters,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Mangesh Sonawane,Sebastian Templ,Wolfgang Waltenberger,C-E Wulz,Mohamed Rashad Darwish,Tahys Janssen,Tomas Kello,H Rejeb Sfar,Pierre Van Mechelen,Emil Sørensen Bols,Jorgen D’Hondt,Alexandre De Moor,Martin Delcourt,Hesham El Faham,Steven Lowette,Seth Moortgat,Alexander Morton,Denise Müller,Abanti Ranadhir Sahasransu,Stefaan Tavernier,W Van Doninck,D Vannerom,B Clerbaux,G De Lentdecker,L Favart,D Hohov,J Jaramillo,K Lee,M Mahdavikhorrami,I Makarenko,A Malara,S Paredes,L Pétré,N Postiau,L Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,D Dobur,J Knolle,L Lambrecht,G Mestdach,C Rendón,A Samalan,K Skovpen,M Tytgat,N Van Den Bossche,B Vermassen,L Wezenbeek,A Benecke,G Bruno,F Bury,C Caputo,P David,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,V Lemaitre,K Mondal,A Taliercio,TT Tran,P Vischia,S Wertz,GA Alves,E Coelho,C Hensel,A Moraes,P Rebello Teles,WL Aldá Júnior,M Alves Gallo Pereira,Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,V Dos Santos Sousa,S Fonseca De Souza,J Martins,C Mora Herrera,K Mota Amarilo,L Mundim,H Nogima,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,PG Mercadante,SF Novaes,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,E Shumka,S Thakur,T Cheng,T Javaid,M Mittal,L Yuan,M Ahmad,G Bauer,Z Hu,S Lezki,K Yi,GM Chen,HS Chen,M Chen,F Iemmi,CH Jiang,A Kapoor,H Liao,Z-A Liu

Journal

Journal of High Energy Physics

Published Date

2023/6

A search for the pair production of the lightest supersymmetric partner of the top quark, the top squark (), is presented. The search targets the four-body decay of the, which is preferred when the mass difference between the top squark and the lightest supersymmetric particle is smaller than the mass of the W boson. This decay mode consists of a bottom quark, two other fermions, and the lightest neutralino (), which is assumed to be the lightest supersymmetric particle. The data correspond to an integrated luminosity of 138 fb− 1 of proton-proton collisions at a center-of-mass energy of 13 TeV collected by the CMS experiment at the CERN LHC. Events are selected using the presence of a high-momentum jet, an electron or muon with low transverse momentum, and a significant missing transverse momentum. The signal is selected based on a multivariate approach that is optimized for the difference between m () and …

Model-independent extraction of form factors and in with hadronic tagging at BaBar

Authors

JP Lees,V Poireau,V Tisserand,E Grauges,A Palano,G Eigen,DN Brown,Yu G Kolomensky,M Fritsch,H Koch,R Cheaib,C Hearty,TS Mattison,JA McKenna,RY So,VE Blinov,AR Buzykaev,VP Druzhinin,EA Kozyrev,EA Kravchenko,SI Serednyakov,Yu I Skovpen,EP Solodov,K Yu Todyshev,AJ Lankford,JW Gary,O Long,AM Eisner,WS Lockman,W Panduro Vazquez,DS Chao,CH Cheng,B Echenard,KT Flood,DG Hitlin,Y Li,S Middleton,TS Miyashita,P Ongmongkolkul,J Oyang,FC Porter,M Röhrken,BT Meadows,MD Sokoloff,JG Smith,SR Wagner,D Bernard,M Verderi,D Bettoni,C Bozzi,R Calabrese,G Cibinetto,E Fioravanti,I Garzia,E Luppi,V Santoro,A Calcaterra,R de Sangro,G Finocchiaro,S Martellotti,P Patteri,IM Peruzzi,M Piccolo,M Rotondo,A Zallo,S Passaggio,BJ Shuve,HM Lacker,B Bhuyan,U Mallik,C Chen,J Cochran,S Prell,AV Gritsan,N Arnaud,M Davier,F Le Diberder,AM Lutz,G Wormser,DJ Lange,DM Wright,JP Coleman,DE Hutchcroft,DJ Payne,C Touramanis,AJ Bevan,G Cowan,Sw Banerjee,CL Davis,AG Denig,W Gradl,K Griessinger,A Hafner,KR Schubert,GD Lafferty,R Cenci,A Jawahery,DA Roberts,R Cowan,SH Robertson,RM Seddon,N Neri,F Palombo,L Cremaldi,DJ Summers,G De Nardo,C Sciacca,CP Jessop,JM LoSecco,K Honscheid,A Gaz,M Margoni,G Simi,F Simonetto,R Stroili,S Akar,E Ben-Haim,M Bomben,GR Bonneaud,G Calderini,J Chauveau,G Marchiori,J Ocariz,M Biasini,E Manoni,A Rossi,G Batignani,S Bettarini,G Casarosa,M Chrzaszcz,F Forti,MA Giorgi,A Lusiani,B Oberhof,E Paoloni,M Rama,G Rizzo,JJ Walsh,L Zani,AJS Smith,F Anulli,R Faccini,F Ferrarotto,A Pilloni,C Bünger,S Dittrich,O Grünberg,T Leddig,C Voß,R Waldi

Journal

arXiv preprint arXiv:2311.15071

Published Date

2023/11/25

Using the entire BaBar data set, the first two-dimensional unbinned angular analysis of the semileptonic decay is performed, employing hadronic reconstruction of the tag-side meson from . Here, denotes the light charged leptons and . A novel data-driven signal-background separation procedure with minimal dependence on simulation is developed. This procedure preserves all multi-dimensional correlations present in the data. The expected dependence of the differential decay rate in the Standard Model is demonstrated, where is the lepton helicity angle. Including input from the latest lattice QCD calculations and previously available experimental data, the underlying form factors are extracted using both model-independent (BGL) and dependent (CLN) methods. Comparisons with lattice calculations show flavor SU(3) symmetry to be a good approximation in the sector. Using the BGL results, the CKM matrix element and the Standard Model prediction of the lepton-flavor universality violation variable , are extracted. The value of from tends to be higher than that extracted using . The Standard Model calculation is at a tension with the latest HFLAV experimental average.

Search for the exotic decay of the Higgs boson into two light pseudoscalars with four photons in the final state in proton-proton collisions at = 13 TeV

Authors

Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,Alberto Escalante Del Valle,Rudolf Fruehwirth,Manfred Jeitler,N Krammer,L Lechner,D Liko,I Mikulec,P Paulitsch,FM Pitters,J Schieck,R Schöfbeck,D Schwarz,S Templ,W Waltenberger,C-E Wulz,MR Darwish,EA De Wolf,T Janssen,T Kello,A Lelek,H Rejeb Sfar,P Van Mechelen,S Van Putte,ES Bols,J D’Hondt,M Delcourt,H El Faham,S Lowette,S Moortgat,A Morton,D Müller,AR Sahasransu,S Tavernier,W Van Doninck,D Vannerom,D Beghin,B Bilin,B Clerbaux,G De Lentdecker,L Favart,AK Kalsi,K Lee,M Mahdavikhorrami,I Makarenko,L Moureaux,S Paredes,L Pétré,A Popov,N Postiau,E Starling,L Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,T Cornelis,D Dobur,J Knolle,L Lambrecht,G Mestdach,M Niedziela,C Rendón,C Roskas,A Samalan,K Skovpen,M Tytgat,B Vermassen,L Wezenbeek,A Benecke,A Bethani,G Bruno,F Bury,C Caputo,P David,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,V Lemaitre,K Mondal,J Prisciandaro,A Taliercio,M Teklishyn,TT Tran,P Vischia,S Wertz,GA Alves,C Hensel,A Moraes,P Rebello Teles,WL Aldá Júnior,M Alves Gallo Pereira,Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,V Dos Santos Sousa,S Fonseca De Souza,C Mora Herrera,K Mota Amarilo,L Mundim,H Nogima,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,F Torres Da Silva De Araujo,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,DS Lemos,PG Mercadante,SF Novaes,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,T Cheng,T Javaid,M Mittal,L Yuan,M Ahmad,G Bauer,C Dozen,Z Hu,J Martins,Y Wang

Journal

Journal of High Energy Physics

Published Date

2023/7

A search for the exotic decay of the Higgs boson to a pair of light pseudoscalars, each of which subsequently decays into a pair of photons, is presented. The search uses data from proton-proton collisions at= 13 TeV recorded with the CMS detector at the LHC that corresponds to an integrated luminosity of 132 fb− 1. The analysis probes pseudoscalar bosons with masses in the range 15–62 GeV, coming from the Higgs boson decay, which leads to four well-isolated photons in the final state. No significant deviation from the background-only hypothesis is observed. Upper limits are set on the product of the Higgs boson production cross section and branching fraction into four photons. The observed (expected) limits range from 0.80 (1.00) fb for a pseudoscalar boson mass of 15 GeV to 0.26 (0.24) fb for a mass of 62 GeV at 95% confidence level.

Search for Higgs Boson and Observation of Z Boson through their Decay into a Charm Quark-Antiquark Pair in Boosted Topologies in Proton-Proton Collisions at s= 13 TeV

Authors

Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,S Chatterjee,Konstantinos Damanakis,Marko Dragicevic,A Escalante Del Valle,Priya Sajid Hussain,Manfred Jeitler,N Krammer,L Lechner,D Liko,I Mikulec,P Paulitsch,J Schieck,R Schöfbeck,D Schwarz,M Sonawane,S Templ,W Waltenberger,CE Wulz,MR Darwish,Tahys Janssen,T Kello,H Rejeb Sfar,P Van Mechelen,ES Bols,J D’Hondt,A De Moor,M Delcourt,H El Faham,S Lowette,A Morton,D Müller,AR Sahasransu,S Tavernier,W Van Doninck,S Van Putte,D Vannerom,B Clerbaux,G De Lentdecker,L Favart,D Hohov,J Jaramillo,K Lee,M Mahdavikhorrami,I Makarenko,A Malara,S Paredes,L Pétré,N Postiau,L Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,Didar Dobur,Joscha Knolle,Luka Lambrecht,Gianny Mestdach,C Rendón,A Samalan,K Skovpen,M Tytgat,N Van Den Bossche,B Vermassen,L Wezenbeek,A Benecke,G Bruno,F Bury,C Caputo,P David,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,V Lemaitre,K Mondal,A Taliercio,TT Tran,P Vischia,S Wertz,GA Alves,E Coelho,C Hensel,A Moraes,P Rebello Teles,WL Júnior,M Pereira,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D Damiao,V Sousa,S Fonseca De Souza,J Martins,C Mora Herrera,K Mota Amarilo,L Mundim,H Nogima,A Santoro,SM Amaral,A Sznajder,M Thiel,A Vilela Pereira,CA Bernardes,L Calligaris,TR Tomei,EM Gregores,PG Mercadante,SF Novaes,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,E Shumka,S Thakur,T Cheng,T Javaid,M Mittal,L Yuan,M Ahmad,G Bauer,Z Hu,S Lezki,K Yi,GM Chen,HS Chen,M Chen,F Iemmi,CH Jiang,A Kapoor,H Liao,ZA Liu,V Milosevic,F Monti

Journal

Physical review letters

Published Date

2023/7/26

A search for the standard model (SM) Higgs boson (H) produced with transverse momentum (p T) greater than 450 GeV and decaying to a charm quark-antiquark (c c) pair is presented. The search is performed using proton-proton collision data collected at s= 13 TeV by the CMS experiment at the LHC, corresponding to an integrated luminosity of 138 fb− 1. Boosted H→ c c decay products are reconstructed as a single large-radius jet and identified using a deep neural network charm tagging technique. The method is validated by measuring the Z→ c c decay process, which is observed in association with jets at high p T for the first time with a signal strength of 1.00− 0.14+ 0.17 (syst)±0.08 (theo)±0.06 (stat), defined as the ratio of the observed process rate to the SM expectation. The observed (expected) upper limit on σ (H) B (H→ c c) is set at 47 (39) times the SM prediction at 95% confidence level.

Precision beam polarimetry at an factory using tau-pair events

Authors

JP Lees,V Poireau,V Tisserand,E Grauges,A Palano,G Eigen,DN Brown,Yu G Kolomensky,M Fritsch,H Koch,R Cheaib,C Hearty,TS Mattison,JA McKenna,RY So,VE Blinov,AR Buzykaev,VP Druzhinin,EA Kozyrev,EA Kravchenko,SI Serednyakov,Yu I Skovpen,EP Solodov,K Yu Todyshev,AJ Lankford,B Dey,JW Gary,O Long,AM Eisner,WS Lockman,W Panduro Vazquez,DS Chao,CH Cheng,B Echenard,KT Flood,DG Hitlin,Y Li,DX Lin,S Middleton,TS Miyashita,P Ongmongkolkul,J Oyang,FC Porter,M Röhrken,BT Meadows,MD Sokoloff,JG Smith,SR Wagner,D Bernard,M Verderi,D Bettoni,C Bozzi,R Calabrese,G Cibinetto,E Fioravanti,I Garzia,E Luppi,V Santoro,A Calcaterra,R De Sangro,G Finocchiaro,S Martellotti,P Patteri,IM Peruzzi,M Piccolo,M Rotondo,A Zallo,S Passaggio,C Patrignani,BJ Shuve,HM Lacker,B Bhuyan,U Mallik,C Chen,J Cochran,S Prell,AV Gritsan,N Arnaud,M Davier,F Le Diberder,AM Lutz,G Wormser,DJ Lange,DM Wright,JP Coleman,DE Hutchcroft,DJ Payne,C Touramanis,AJ Bevan,F Di Lodovico,G Cowan,Sw Banerjee,CL Davis,AG Denig,W Gradl,K Griessinger,A Hafner,KR Schubert,RJ Barlow,GD Lafferty,R Cenci,A Jawahery,DA Roberts,R Cowan,SH Robertson,RM Seddon,N Neri,F Palombo,L Cremaldi,R Godang,DJ Summers,G De Nardo,C Sciacca,CP Jessop,JM LoSecco,K Honscheid,A Gaz,M Margoni,G Simi,F Simonetto,R Stroili,S Akar,E Ben-Haim,M Bomben,GR Bonneaud,G Calderini,J Chauveau,G Marchiori,J Ocariz,M Biasini,E Manoni,A Rossi,G Batignani,S Bettarini,M Carpinelli,G Casarosa,M Chrzaszcz,F Forti,MA Giorgi,A Lusiani,B Oberhof,E Paoloni,M Rama,G Rizzo,JJ Walsh,L Zani,AJS Smith,F Anulli,R Faccini,F Ferrarotto

Journal

Physical Review D

Published Date

2023/11/2

We present a new technique,“tau polarimetry,” for measuring the longitudinal beam polarization present in an e+ e− collider through the analysis of e+ e−→ τ+ τ− events. By exploiting the sensitivity of τ decay kinematics to the longitudinal polarization of the beams, we demonstrate that the longitudinal polarization can be measured with a 3 per mil systematic uncertainty at the interaction point using a technique that is independent of spin and beam transport modeling. Using 424.2±1.8 fb− 1 of BABAR data at s= 10.58 GeV, the average longitudinal polarization of the PEP-II e+ e− collider has been measured to be⟨ P⟩= 0.0035±0.002 4 stat±0.002 9 sys. The systematic uncertainty studies are described in detail, which can serve as a guide for future applications of tau polarimetry. A proposed e− beam longitudinal polarization upgrade to the SuperKEKB e+ e− collider would benefit from this technique.

Search for nonresonant Higgs boson pair production in final state with two bottom quarks and two tau leptons in proton-proton collisions at s= 13 TeV

Authors

Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,A Escalante Del Valle,Priya Sajid Hussain,Manfred Jeitler,Natascha Krammer,Lukas Lechner,Dietrich Liko,Ivan Mikulec,Peter Paulitsch,Florian Michael Pitters,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Sebastian Templ,Wolfgang Waltenberger,C-E Wulz,Mohamed Rashad Darwish,Tahys Janssen,Tomas Kello,H Rejeb Sfar,Pierre Van Mechelen,Emil Sørensen Bols,Jorgen d'Hondt,Alexandre De Moor,Martin Delcourt,Hesham El Faham,Steven Lowette,Seth Moortgat,Alexander Morton,Denise Müller,Abanti Ranadhir Sahasransu,Stefaan Tavernier,Walter Van Doninck,David Vannerom,Barbara Clerbaux,Gilles De Lentdecker,Laurent Favart,Johny Jaramillo,Kyeongpil Lee,Mostafa Mahdavikhorrami,Inna Makarenko,Andrea Malara,Santiago Paredes,Laurent Pétré,Nicolas Postiau,Elizabeth Starling,Laurent Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,D Dobur,J Knolle,L Lambrecht,G Mestdach,M Niedziela,C Rendón,C Roskas,A Samalan,K Skovpen,M Tytgat,N Van Den Bossche,B Vermassen,L Wezenbeek,A Benecke,A Bethani,G Bruno,F Bury,C Caputo,P David,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,V Lemaitre,K Mondal,J Prisciandaro,A Taliercio,TT Tran,P Vischia,S Wertz,GA Alves,E Coelho,C Hensel,A Moraes,P Rebello Teles,WL Aldá Júnior,M Alves Gallo Pereira,M Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,V Dos Santos Sousa,S Fonseca De Souza,J Martins,C Mora Herrera,K Mota Amarilo,L Mundim,H Nogima,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,F Torres Da Silva De Araujo,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,PG Mercadante,SF Novaes,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,E Shumka,T Cheng,T Javaid,M Mittal,L Yuan,M Ahmad,G Bauer,Z Hu,S Lezki,K Yi,GM Chen,HS Chen,M Chen,F Iemmi,CH Jiang

Journal

Physics Letters B

Published Date

2023/7/10

A search for the nonresonant production of Higgs boson pairs (HH) via gluon-gluon and vector boson fusion processes in final states with two bottom quarks and two tau leptons is presented. The search uses data from proton-proton collisions at a center-of-mass energy of s= 13 TeV recorded with the CMS detector at the LHC, corresponding to an integrated luminosity of 138 fb− 1. Events in which at least one tau lepton decays hadronically are considered and multiple machine learning techniques are used to identify and extract the signal. The data are found to be consistent, within uncertainties, with the standard model (SM) predictions. Upper limits on the HH production cross section are set to constrain the parameter space for anomalous Higgs boson couplings. The observed (expected) upper limit at 95% confidence level corresponds to 3.3 (5.2) times the SM prediction for the inclusive HH cross section and to …

Measurement of the differential tt⎯⎯ production cross section as a function of the jet mass and extraction of the top quark mass in hadronic decays of boosted top quarks

Authors

CMS Collaboration

Published Date

2023/7/3

A measurement of the jet mass distribution in hadronic decays of Lorentz-boosted top quarks is presented. The measurement is performed in the lepton+ jets channel of top quark pair production (tt) events, where the lepton is an electron or muon. The products of the hadronic top quark decay are reconstructed using a single large-radius jet with transverse momentum greater than 400 GeV. The data were collected with the CMS detector at the LHC in protonproton collisions and correspond to an integrated luminosity of 138 fb− 1. The differential tt production cross section as a function of the jet mass is unfolded to the particle level and is used to extract the top quark mass. The jet mass scale is calibrated using the hadronic W boson decay within the large-radius jet. The uncertainties in the modelling of the final state radiation are reduced by studying angular correlations in the jet substructure. These developments …

Search for medium effects using jets from bottom quarks in PbPb collisions at sNN= 5.02 TeV

Authors

Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,A Escalante Del Valle,Priya Sajid Hussain,Manfred Jeitler,Natascha Krammer,Lukas Lechner,Dietrich Liko,Ivan Mikulec,Peter Paulitsch,Florian Michael Pitters,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Mangesh Sonawane,Sebastian Templ,Wolfgang Waltenberger,C-E Wulz,Mohamed Rashad Darwish,Tahys Janssen,Tomas Kello,H Rejeb Sfar,Pierre Van Mechelen,Emil Sørensen Bols,Jorgen d'Hondt,Alexandre De Moor,Martin Delcourt,Hesham El Faham,Steven Lowette,Seth Moortgat,Alexander Morton,Denise Müller,Abanti Ranadhir Sahasransu,Stefaan Tavernier,Walter Van Doninck,David Vannerom,Barbara Clerbaux,Gilles De Lentdecker,Laurent Favart,Dmytro Hohov,Johny Jaramillo,Kyeongpil Lee,Mostafa Mahdavikhorrami,Inna Makarenko,Andrea Malara,Santiago Paredes,Laurent Pétré,Nicolas Postiau,Laurent Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,D Dobur,J Knolle,L Lambrecht,G Mestdach,M Niedziela,C Rendón,C Roskas,A Samalan,K Skovpen,M Tytgat,N Van Den Bossche,B Vermassen,L Wezenbeek,A Benecke,G Bruno,F Bury,C Caputo,P David,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,V Lemaitre,K Mondal,A Taliercio,TT Tran,P Vischia,S Wertz,GA Alves,E Coelho,C Hensel,A Moraes,P Rebello Teles,WL Aldá Júnior,M Alves Gallo Pereira,M Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,V Dos Santos Sousa,S Fonseca De Souza,J Martins,C Mora Herrera,K Mota Amarilo,L Mundim,H Nogima,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,F Torres Da Silva De Araujo,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,PG Mercadante,SF Novaes,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,E Shumka,S Thakur,T Cheng,T Javaid,M Mittal,L Yuan,M Ahmad,G Bauer,Z Hu,S Lezki,K Yi,GM Chen,HS Chen,M Chen,F Iemmi,CH Jiang

Journal

Physics Letters B

Published Date

2023/9/10

The first study of the shapes of jets arising from bottom (b) quarks in heavy ion collisions is presented. Jet shapes are studied using charged hadron constituents as a function of their radial distance from the jet axis. Lead-lead (PbPb) collision data at a nucleon-nucleon center-of-mass energy of s NN= 5.02 TeV were recorded by the CMS detector at the LHC, with an integrated luminosity of 1.69 nb− 1. Compared to proton-proton collisions, a redistribution of the energy in b jets to larger distances from the jet axis is observed in PbPb collisions. This medium-induced redistribution is found to be substantially larger for b jets than for inclusive jets.

Search for a vector-like quark T′ → tH via the diphoton decay mode of the Higgs boson in proton-proton collisions at = 13 TeV

Authors

Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,S Chatterjee,Konstantinos Damanakis,Marko Dragicevic,Alberto Escalante Del Valle,Priya Sajid Hussain,Manfred Jeitler,N Krammer,L Lechner,D Liko,I Mikulec,P Paulitsch,FM Pitters,J Schieck,R Schöfbeck,D Schwarz,M Sonawane,S Templ,W Waltenberger,C-E Wulz,MR Darwish,T Janssen,T Kello,H Rejeb Sfar,P Van Mechelen,ES Bols,J D’hondt,A De Moor,M Delcourt,H El Faham,S Lowette,S Moortgat,A Morton,D Müller,AR Sahasransu,S Tavernier,W Van Doninck,D Vannerom,B Clerbaux,G De Lentdecker,L Favart,D Hohov,J Jaramillo,K Lee,M Mahdavikhorrami,I Makarenko,A Malara,S Paredes,L Pétré,N Postiau,L Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,D Dobur,J Knolle,L Lambrecht,G Mestdach,Cesar Rendón,A Samalan,K Skovpen,M Tytgat,N Van Den Bossche,B Vermassen,L Wezenbeek,A Benecke,G Bruno,F Bury,C Caputo,P David,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,V Lemaitre,K Mondal,A Taliercio,TT Tran,P Vischia,S Wertz,GA Alves,E Coelho,C Hensel,A Moraes,P Rebello Teles,WL Aldá Júnior,M Alves Gallo Pereira,Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,V Dos Santos Sousa,S Fonseca De Souza,J Martins,C Mora Herrera,K Mota Amarilo,L Mundim,H Nogima,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,PG Mercadante,SF Novaes,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,E Shumka,S Thakur,T Cheng,T Javaid,M Mittal,L Yuan,M Ahmad,G Bauer,Z Hu,S Lezki,K Yi,GM Chen,HS Chen,M Chen,F Iemmi,CH Jiang,A Kapoor,H Liao,Z-A Liu

Journal

Journal of High Energy Physics

Published Date

2023/9

A search for the electroweak production of a vector-like quark T′, decaying to a top quark and a Higgs boson is presented. The search is based on a sample of proton-proton collision events recorded at the LHC at= 13 TeV, corresponding to an integrated luminosity of 138 fb− 1. This is the first T′ search that exploits the Higgs boson decay to a pair of photons. For narrow isospin singlet T′ states with masses up to 1.1 TeV, the excellent diphoton invariant mass resolution of 1–2% results in an increased sensitivity compared to previous searches based on the same production mechanism. The electroweak production of a T′ quark with mass up to 960 GeV is excluded at 95% confidence level, assuming a coupling strength κ T= 0. 25 and a relative decay width Γ/M T′< 5%.

Search for new physics in multijet events with at least one photon and large missing transverse momentum in proton-proton collisions at 13 TeV

Authors

Aram Hayrapetyan,Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,Alberto Escalante Del Valle,Priya Sajid Hussain,Manfred Jeitler,Natascha Krammer,Dietrich Liko,Ivan Mikulec,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Mangesh Sonawane,Sebastian Templ,Wolfgang Waltenberger,C-E Wulz,Mohamed Rashad Darwish,Tahys Janssen,Pierre Van Mechelen,Emil Sørensen Bols,Jorgen D’Hondt,Soumya Dansana,Alexandre De Moor,Martin Delcourt,Hesham El Faham,Steven Lowette,Inna Makarenko,Alexander Morton,Denise Müller,Abanti Ranadhir Sahasransu,Stefaan Tavernier,Michael Tytgat,Senne Van Putte,David Vannerom,Barbara Clerbaux,Gilles De Lentdecker,Laurent Favart,Dmytro Hohov,Johny Jaramillo,Ali Khalilzadeh,Kyeongpil Lee,Mostafa Mahdavikhorrami,Andrea Malara,Santiago Paredes,Laurent Pétré,Nicolas Postiau,Laurent Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,Maarten De Coen,Didar Dobur,Joscha Knolle,Luka Lambrecht,Gianny Mestdach,Cesar Rendón,Amrutha Samalan,Kirill Skovpen,N Van Den Bossche,L Wezenbeek,A Benecke,G Bruno,C Caputo,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,V Lemaitre,J Lidrych,P Mastrapasqua,K Mondal,TT Tran,S Wertz,GA Alves,E Coelho,C Hensel,T Menezes De Oliveira,A Moraes,P Rebello Teles,M Soeiro,WL Aldá Júnior,M Alves Gallo Pereira,Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,S Fonseca De Souza,J Martins,C Mora Herrera,K Mota Amarilo,L Mundim,H Nogima,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,PG Mercadante,SF Novaes,B Orzari,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,E Shumka,S Keshri,S Thakur,T Cheng,Q Guo,T Javaid,M Mittal,L Yuan,G Bauer,Z Hu,K Yi,GM Chen,HS Chen,M Chen,F Iemmi,CH Jiang,A Kapoor,H Liao,Z-A Liu,F Monti,R Sharma,JN Song,J Tao

Journal

Journal of high energy physics

Published Date

2023/10

A search for new physics in final states consisting of at least one photon, multiple jets, and large missing transverse momentum is presented, using proton-proton collision events at a center-of-mass energy of 13 TeV. The data correspond to an integrated luminosity of 137 fb− 1, recorded by the CMS experiment at the CERN LHC from 2016 to 2018. The events are divided into mutually exclusive bins characterized by the missing transverse momentum, the number of jets, the number of b-tagged jets, and jets consistent with the presence of hadronically decaying W, Z, or Higgs bosons. The observed data are found to be consistent with the prediction from standard model processes. The results are interpreted in the context of simplified models of pair production of supersymmetric particles via strong and electroweak interactions. Depending on the details of the signal models, gluinos and squarks of masses up to 2.35 …

Study of the reactions e plus e-? K+ K-, r0, r0, r0, e+ e-? K0SK?, r?, r0, r0, and e plus e-? K0SK?, r?, r+, r-at center-of-mass energies from threshold to 4.5 GeV using …

Authors

JP Lees,V Poireau,V Tisserand,E Grauges,A Palano,G Eigen,DN Brown,Yu G Kolomensky,M Fritsch,H Koch,R Cheaib,C Hearty,TS Mattison,JA McKenna,RY So,VE Blinov,AR Buzykaev,VP Druzhinin,EA Kozyrev,EA Kravchenko,SI Serednyakov,Yu I Skovpen,EP Solodov,K Yu Todyshev,AJ Lankford,B Dey,JW Gary,O Long,AM Eisner,WS Lockman,W Panduro Vazquez,DS Chao,CH Cheng,B Echenard,KT Flood,DG Hitlin,Y Li,DX Lin,S Middleton,TS Miyashita,P Ongmongkolkul,J Oyang,FC Porter,M Rohrken,BT Meadows,MD Sokoloff,JG Smith,SR Wagner,D Bernard,M Verderi,D Bettoni,C Bozzi,R Calabrese,G Cibinetto,E Fioravanti,I Garzia,E Luppi,V Santoro,A Calcaterra,R de Sangro,G Finocchiaro,S Martellotti,P Patteri,IM Peruzzi,M Piccolo,M Rotondo,A Zallo,S Passaggio,C Patrignani,BJ Shuve,HM Lacker,B Bhuyan,U Mallik,C Chen,J Cochran,S Prell,AV Gritsan,N Arnaud,M Davier,F Le Diberder,AM Lutz,G Wormser,DJ Lange,DM Wright,JP Coleman,DE Hutchcroft,DJ Payne,C Touramanis,AJ Bevan,F Di Lodovico,G Cowan,Sw Banerjee,CL Davis,AG Denig,W Gradl,K Griessinger,A Hafner,KR Schubert,RJ Barlow,GD Lafferty,R Cenci,A Jawahery,DA Roberts,R Cowan,SH Robertson,RM Seddon,N Neri,F Palombo,L Cremaldi,R Godang,DJ Summers,G De Nardo,C Sciacca,CP Jessop,JM LoSecco,K Honscheid,A Gaz,M Margoni,G Simi,F Simonetto,R Stroili,S Akar,E Ben-Haim,M Bomben,GR Bonneaud,G Calderini,J Chauveau,G Marchiori,J Ocariz,M Biasini,E Manoni,A Rossi,G Batignani,S Bettarini,M Carpinelli,G Casarosa,M Chrzaszcz,F Forti,MA Giorgi,A Lusiani,B Oberhof,E Paoloni,M Rama,G Rizzo,JJ Walsh,L Zani,AJS Smith,F Anulli,R Faccini,F Ferrarotto

Journal

PHYSICAL REVIEW D

Published Date

2023

We study the processes e+e-→K+K-π0π0π0γ, KS0K±π?π0π0γ, and KS0K±π?π+π-γ in which an energetic photon is radiated from the initial state. The data were collected with the BABAR detector at the SLAC National Accelerator Laboratory. About 1200, 2600, and 6000 events, respectively, are selected from a data sample corresponding to an integrated luminosity of 469 fb-1. The invariant mass of the hadronic final state defines the effective e+e- center-of-mass energy. The center-of-mass energies range from threshold to 4.5 GeV. From the mass spectra, the first ever measurements of the e+e-→K+K-π0π0π0, e+e-→KS0K±π?π0π0, and e+e-→KS0K±π?π+π- cross sections are performed. The contributions from the intermediate states that include η, φ, ρ, K∗(892), and other resonances are presented. We observe the J/ψ and ψ(2S) in most of these final states and measure the corresponding branching fractions, many of them for the first time.

Search for heavy neutral leptons using tau lepton decays at BaBaR

Authors

JP Lees,V Poireau,V Tisserand,E Grauges,A Palano,G Eigen,David Nathan Brown,Yu G Kolomensky,M Fritsch,H Koch,R Cheaib,C Hearty,TS Mattison,JA McKenna,RY So,VE Blinov,AR Buzykaev,VP Druzhinin,EA Kozyrev,EA Kravchenko,SI Serednyakov,Yu I Skovpen,EP Solodov,K Yu Todyshev,AJ Lankford,B Dey,JW Gary,O Long,AM Eisner,WS Lockman,W Panduro Vazquez,DS Chao,CH Cheng,B Echenard,KT Flood,DG Hitlin,Y Li,DX Lin,S Middleton,TS Miyashita,P Ongmongkolkul,J Oyang,FC Porter,M Röhrken,BT Meadows,MD Sokoloff,JG Smith,SR Wagner,D Bernard,M Verderi,D Bettoni,C Bozzi,R Calabrese,G Cibinetto,E Fioravanti,I Garzia,E Luppi,V Santoro,A Calcaterra,R De Sangro,G Finocchiaro,S Martellotti,P Patteri,IM Peruzzi,M Piccolo,M Rotondo,A Zallo,S Passaggio,C Patrignani,BJ Shuve,HM Lacker,B Bhuyan,U Mallik,C Chen,J Cochran,S Prell,AV Gritsan,N Arnaud,M Davier,F Le Diberder,AM Lutz,G Wormser,DJ Lange,DM Wright,JP Coleman,DE Hutchcroft,DJ Payne,C Touramanis,AJ Bevan,F Di Lodovico,G Cowan,Sw Banerjee,CL Davis,AG Denig,W Gradl,K Griessinger,A Hafner,KR Schubert,RJ Barlow,GD Lafferty,R Cenci,A Jawahery,DA Roberts,R Cowan,SH Robertson,RM Seddon,N Neri,F Palombo,L Cremaldi,R Godang,DJ Summers,G De Nardo,C Sciacca,CP Jessop,JM LoSecco,K Honscheid,A Gaz,M Margoni,G Simi,F Simonetto,R Stroili,S Akar,E Ben-Haim,M Bomben,GR Bonneaud,G Calderini,J Chauveau,G Marchiori,J Ocariz,M Biasini,E Manoni,A Rossi,G Batignani,S Bettarini,M Carpinelli,G Casarosa,M Chrzaszcz,F Forti,MA Giorgi,A Lusiani,B Oberhof,E Paoloni,M Rama,G Rizzo,JJ Walsh,L Zani,AJS Smith,F Anulli,R Faccini,F Ferrarotto

Journal

Physical Review D

Published Date

2023/3/23

This article presents a model-independent search for an additional, mostly sterile, heavy neutral lepton (HNL), that is capable of mixing with the Standard Model τ neutrino with a mixing strength of| U τ 4| 2, corresponding to the absolute square of the extended Pontecorvo-Maki-Nakagawa-Sakata matrix element. Data from the BABAR experiment, with a total integrated luminosity of 424 fb− 1, are analyzed using a kinematic approach that makes no assumptions on the model behind the origins of the HNL, its lifetime or decay modes. No significant signal is found. Upper limits on| U τ 4| 2 at the 95% confidence level, depend on the HNL mass hypothesis and vary from 2.31× 10− 2 to 5.04× 10− 6 (with all uncertainties considered), across the mass range 100< m 4< 1300 MeV/c 2; the more stringent limits being placed at higher masses.

Search for mesogenesis at BaBar

Authors

JP Lees,V Poireau,V Tisserand,E Grauges,A Palano,G Eigen,DN Brown,Yu G Kolomensky,M Fritsch,H Koch,R Cheaib,C Hearty,TS Mattison,JA McKenna,RY So,VE Blinov,AR Buzykaev,VP Druzhinin,EA Kozyrev,EA Kravchenko,SI Serednyakov,Yu I Skovpen,EP Solodov,K Yu Todyshev,AJ Lankford,B Dey,JW Gary,O Long,AM Eisner,WS Lockman,W Panduro Vazquez,DS Chao,CH Cheng,B Echenard,KT Flood,DG Hitlin,Y Li,DX Lin,S Middleton,TS Miyashita,P Ongmongkolkul,J Oyang,FC Porter,M Röhrken,BT Meadows,MD Sokoloff,JG Smith,SR Wagner,D Bernard,M Verderi,D Bettoni,C Bozzi,R Calabrese,G Cibinetto,E Fioravanti,I Garzia,E Luppi,V Santoro,A Calcaterra,R De Sangro,G Finocchiaro,S Martellotti,P Patteri,IM Peruzzi,M Piccolo,M Rotondo,A Zallo,S Passaggio,C Patrignani,BJ Shuve,HM Lacker,B Bhuyan,U Mallik,C Chen,J Cochran,S Prell,AV Gritsan,N Arnaud,M Davier,F Le Diberder,AM Lutz,G Wormser,DJ Lange,DM Wright,JP Coleman,DE Hutchcroft,DJ Payne,C Touramanis,AJ Bevan,F Di Lodovico,G Cowan,Sw Banerjee,CL Davis,AG Denig,W Gradl,K Griessinger,A Hafner,KR Schubert,RJ Barlow,GD Lafferty,R Cenci,A Jawahery,DA Roberts,R Cowan,SH Robertson,RM Seddon,N Neri,F Palombo,L Cremaldi,R Godang,DJ Summers,G De Nardo,C Sciacca,CP Jessop,JM LoSecco,K Honscheid,A Gaz,M Margoni,G Simi,F Simonetto,R Stroili,S Akar,E Ben-Haim,M Bomben,GR Bonneaud,G Calderini,J Chauveau,G Marchiori,J Ocariz,M Biasini,E Manoni,A Rossi,G Batignani,S Bettarini,M Carpinelli,G Casarosa,M Chrzaszcz,F Forti,MA Giorgi,A Lusiani,B Oberhof,E Paoloni,M Rama,G Rizzo,JJ Walsh,L Zani,AJS Smith,F Anulli,R Faccini,F Ferrarotto

Journal

Physical Review D

Published Date

2023/5/3

A new mechanism has been proposed to simultaneously explain the presence of dark matter and the matter-antimatter asymmetry in the Universe. This scenario predicts exotic B-meson decays into a baryon and a dark-sector antibaryon (ψ D) with branching fractions accessible at B factories. We present a search for B→ Λ ψ D decays using data collected by the BABAR experiment at SLAC. This reaction is identified by fully reconstructing the accompanying B meson and requiring the presence of a single Λ baryon in the remaining particles. No significant signal is observed, and bounds on the B→ Λ ψ D branching fraction are derived in the range 0.13–5.2× 10− 5 for 1.0< m ψ D< 4.2 GeV/c 2. These results set strong constraints on the parameter space allowed by the theory.

Measurement of the Higgs boson inclusive and differential fiducial production cross sections in the diphoton decay channel with pp collisions at = 13 TeV

Authors

Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,Alberto Escalante Del Valle,Priya Sajid Hussain,Manfred Jeitler,Natascha Krammer,Lukas Lechner,Dietrich Liko,Ivan Mikulec,Peter Paulitsch,Florian Michael Pitters,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Sebastian Templ,Wolfgang Waltenberger,C-E Wulz,Mohamed Rashad Darwish,Tahys Janssen,Tomas Kello,H Rejeb Sfar,Pierre Van Mechelen,Emil Sørensen Bols,Jorgen D’Hondt,Alexandre De Moor,Martin Delcourt,Hesham El Faham,Steven Lowette,Seth Moortgat,Alexander Morton,Denise Müller,Abanti Ranadhir Sahasransu,Stefaan Tavernier,Walter Van Doninck,David Vannerom,Barbara Clerbaux,Gilles De Lentdecker,Laurent Favart,Dmytro Hohov,Johny Jaramillo,K Lee,Mostafa Mahdavikhorrami,Inna Makarenko,Andrea Malara,Santiago Paredes,Laurent Pétré,Nicolas Postiau,Elizabeth Starling,Laurent Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,D Dobur,J Knolle,L Lambrecht,G Mestdach,M Niedziela,C Rendón,C Roskas,A Samalan,K Skovpen,M Tytgat,N Van Den Bossche,B Vermassen,L Wezenbeek,A Benecke,G Bruno,F Bury,C Caputo,P David,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,Vincent Lemaitre,Kuntal Mondal,Jessica Prisciandaro,Angela Taliercio,Tu Thong Tran,Pietro Vischia,Sébastien Wertz,GA Alves,Eduardo Coelho,Carsten Hensel,Arthur Moraes,P Rebello Teles,WL Aldá Júnior,M Alves Gallo Pereira,Barroso Ferreira Filho,H Brandao Malbouisson,Wagner Carvalho,Jose Chinellato,Eliza Melo Da Costa,Gustavo Gil Da Silveira,Dilson de Jesus Damiao,Vitor Dos Santos Sousa,S Fonseca De Souza,Jordan Martins,C Mora Herrera,K Mota Amarilo,Luiz Mundim,Helio Nogima,Alberto Santoro,SM Silva Do Amaral,Andre Sznajder,Mauricio Thiel,F Torres Da Silva De Araujo,A Vilela Pereira,Cesar Augusto Bernardes,Luigi Calligaris,TR Fernandez Perez Tomei,EM Gregores,Pedro G Mercadante,Sergio F Novaes,Sandra S Padula,Aleksandar Aleksandrov,Georgy Antchev,Roumyana Hadjiiska,Plamen Iaydjiev,Milena Misheva,Mircho Rodozov,Mariana Shopova,Georgi Sultanov,Anton Dimitrov,Todor Ivanov,Leander Litov,Borislav Pavlov,Peicho Petkov,Anton Petrov,Elton Shumka,Tongguang Cheng,Tahir Javaid,Monika Mittal,L Yuan,Muhammad Ahmad,Gerry Bauer,Zhen Hu,Samet Lezki,Kai Yi,Guo-Ming Chen,He-Sheng Chen,Mingshui Chen,Fabio Iemmi,Anshul Kapoor

Journal

Journal of High Energy Physics

Published Date

2023/7

The measurements of the inclusive and differential fiducial cross sections of the Higgs boson decaying to a pair of photons are presented. The analysis is performed using proton-proton collisions data recorded with the CMS detector at the LHC at a centre-of-mass energy of 13 TeV and corresponding to an integrated luminosity of 137 fb− 1. The inclusive fiducial cross section is measured to be fb, in agreement with the standard model expectation of 75. 4±4. 1 fb. The measurements are also performed in fiducial regions targeting different production modes and as function of several observables describing the diphoton system, the number of additional jets present in the event, and other kinematic observables. Two double differential measurements are performed. No significant deviations from the standard model expectations are observed.

Higher-order moments of the elliptic flow distribution in PbPb collisions at 5.02 TeV

Authors

Armen Tumasyan

Published Date

2023/11/19

The hydrodynamic flow-like behavior of charged hadrons in high-energy lead-lead collisions is studied through multiparticle correlations. The elliptic anisotropy values based on different orders of multiparticle cumulants, v 2 {2k}, are measured up to the tenth order (k= 5) as functions of the collision centrality at a nucleon-nucleon center-of-mass energy of= 5. 02 TeV. The data were recorded by the CMS experiment at the LHC and correspond to an integrated luminosity of 0.607 nb− 1. A hierarchy is observed between the coefficients, with v 2 {2}> v 2 {4}≳ v 2 {6}≳ v 2 {8}≳ v 2 {10}. Based on these results, centrality-dependent moments for the fluctuation-driven event-by-event v 2 distribution are determined, including the skewness, kurtosis and, for the first time, superskewness. Assuming a hydrodynamic expansion of the produced medium, these moments directly probe the initial-state geometry in high-energy …

Search for direct pair production of supersymmetric partners of τ leptons in the final state with two hadronically decaying τ leptons and missing transverse momentum in proton …

Authors

CMS Collaboration cms-publication-committee-chair@ cern. ch,AM Sirunyan,A Tumasyan,W Adam,F Ambrogi,T Bergauer,J Brandstetter,M Dragicevic,J Erö,A Escalante Del Valle,M Flechl,R Frühwirth,M Jeitler,N Krammer,I Krätschmer,D Liko,T Madlener,I Mikulec,N Rad,J Schieck,R Schöfbeck,M Spanring,D Spitzbart,W Waltenberger,C-E Wulz,M Zarucki,V Drugakov,V Mossolov,J Suarez Gonzalez,MR Darwish,EA De Wolf,D Di Croce,X Janssen,A Lelek,M Pieters,H Rejeb Sfar,H Van Haevermaet,P Van Mechelen,S Van Putte,N Van Remortel,F Blekman,ES Bols,SS Chhibra,J D’Hondt,J De Clercq,D Lontkovskyi,S Lowette,I Marchesini,S Moortgat,L Moreels,Q Python,K Skovpen,S Tavernier,W Van Doninck,P Van Mulders,I Van Parijs,D Beghin,B Bilin,H Brun,B Clerbaux,G De Lentdecker,H Delannoy,B Dorney,L Favart,A Grebenyuk,AK Kalsi,A Popov,N Postiau,E Starling,L Thomas,C Vander Velde,P Vanlaer,D Vannerom,T Cornelis,D Dobur,I Khvastunov,M Niedziela,C Roskas,D Trocino,M Tytgat,W Verbeke,B Vermassen,M Vit,N Zaganidis,O Bondu,G Bruno,C Caputo,P David,C Delaere,M Delcourt,A Giammanco,V Lemaitre,A Magitteri,J Prisciandaro,A Saggio,M Vidal Marono,P Vischia,J Zobec,FL Alves,GA Alves,G Correia Silva,C Hensel,A Moraes,P Rebello Teles,E Belchior Batista Das Chagas,W Carvalho,J Chinellato,E Coelho,EM Da Costa,GG Da Silveira,D De Jesus Damiao,C De Oliveira Martins,S Fonseca De Souza,LM Huertas Guativa,H Malbouisson,J Martins,D Matos Figueiredo,M Medina Jaime,M Melo De Almeida,C Mora Herrera,L Mundim,H Nogima,WL Prado Da Silva,LJ Sanchez Rosas,A Santoro,A Sznajder,M Thiel,EJ Tonelli Manganote,F Torres Da Silva De Araujo,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,DS Lemos,PG Mercadante,SF Novaes,SandraS Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,A Marinov,M Misheva,M Rodozov,M Shopova,G Sultanov,M Bonchev,A Dimitrov,T Ivanov

Journal

The European Physical Journal C

Published Date

2020/3

A search is presented for slepton pairs produced in proton–proton collisions at a center-of-mass energy of 13. The search is carried out in events containing two leptons in the final state, on the assumption that each slepton decays primarily to a lepton and a neutralino. Events are considered in which each lepton decays to one or more hadrons and a neutrino, or in which one of the leptons decays instead to an electron or a muon and two neutrinos. The data, collected with the CMS detector in 2016 and 2017, correspond to an integrated luminosity of 77.2. The observed data are consistent with the standard model background expectation. The results are used to set 95% confidence level upper limits on the cross section for slepton pair production in various models for slepton masses between 90 and 200 and neutralino masses of 1, 10, and 20. In the case of purely left-handed slepton production and …

Measurement of additional radiation in the initial-state-radiation processes and at BABAR

Authors

JP Lees,V Poireau,V Tisserand,E Grauges,A Palano,G Eigen,DN Brown,Yu G Kolomensky,M Fritsch,H Koch,R Cheaib,C Hearty,TS Mattison,JA McKenna,RY So,VE Blinov,AR Buzykaev,VP Druzhinin,EA Kozyrev,EA Kravchenko,SI Serednyakov,Yu I Skovpen,EP Solodov,K Yu Todyshev,AJ Lankford,B Dey,JW Gary,O Long,AM Eisner,WS Lockman,W Panduro Vazquez,DS Chao,CH Cheng,B Echenard,KT Flood,DG Hitlin,Y Li,DX Lin,S Middleton,TS Miyashita,P Ongmongkolkul,J Oyang,FC Porter,M Röhrken,BT Meadows,MD Sokoloff,JG Smith,SR Wagner,D Bernard,M Verderi,D Bettoni,C Bozzi,R Calabrese,G Cibinetto,E Fioravanti,I Garzia,E Luppi,V Santoro,A Calcaterra,R De Sangro,G Finocchiaro,S Martellotti,P Patteri,IM Peruzzi,M Piccolo,M Rotondo,A Zallo,S Passaggio,C Patrignani,BJ Shuve,HM Lacker,B Bhuyan,U Mallik,C Chen,J Cochran,S Prell,AV Gritsan,N Arnaud,D Bai,M Davier,F Le Diberder,L Li,AM Lutz,G Wormser,Z Zhang,DJ Lange,DM Wright,JP Coleman,DE Hutchcroft,DJ Payne,C Touramanis,AJ Bevan,F Di Lodovico,G Cowan,Sw Banerjee,CL Davis,AG Denig,W Gradl,K Griessinger,A Hafner,KR Schubert,RJ Barlow,GD Lafferty,R Cenci,A Jawahery,DA Roberts,R Cowan,SH Robertson,RM Seddon,N Neri,F Palombo,L Cremaldi,R Godang,DJ Summers,G De Nardo,C Sciacca,CP Jessop,JM LoSecco,K Honscheid,A Gaz,M Margoni,G Simi,F Simonetto,R Stroili,S Akar,E Ben-Haim,M Bomben,GR Bonneaud,G Calderini,J Chauveau,B Malaescu,G Marchiori,J Ocariz,M Biasini,E Manoni,A Rossi,G Batignani,S Bettarini,M Carpinelli,G Casarosa,M Chrzaszcz,F Forti,MA Giorgi,A Lusiani,B Oberhof,E Paoloni,M Rama,G Rizzo,JJ Walsh,L Zani

Journal

Physical Review D

Published Date

2023/12/21

A dedicated measurement of additional radiation in e+ e−→ μ+ μ− γ and e+ e−→ π+ π− γ initial-state-radiation events is presented using the full BABAR data sample. For the first time results are presented at next-to-and next-to-next-to-leading order, with one and two additional photons, respectively, for radiation from the initial and final states. Comparison with predictions from phokhara and afkqed Monte Carlo generators is performed, revealing discrepancies in the one-photon rates and angular distributions for the former. This disagreement has a negligible effect on the BABAR measurement of the e+ e−→ π+ π−(γ) cross section, but could affect other measurements significantly. This study sheds a new light on the longstanding discrepancy in this channel that affects the theoretical prediction of hadronic vacuum polarization contributions to the muon magnetic moment anomaly.

Search for resonant and nonresonant production of pairs of dijet resonances in proton-proton collisions at = 13 TeV

Authors

Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,Alberto Escalante Del Valle,Priya Sajid Hussain,Manfred Jeitler,Natascha Krammer,Lukas Lechner,Dietrich Liko,Ivan Mikulec,Peter Paulitsch,Florian Michael Pitters,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Sebastian Templ,Wolfgang Waltenberger,C-E Wulz,Mohamed Rashad Darwish,Tahys Janssen,Tomas Kello,H Rejeb Sfar,Pierre Van Mechelen,Emil Sørensen Bols,Jorgen D’Hondt,Alexandre De Moor,Martin Delcourt,Hesham El Faham,Steven Lowette,Seth Moortgat,Alexander Morton,Denise Müller,Abanti Ranadhir Sahasransu,Stefaan Tavernier,Walter Van Doninck,David Vannerom,Barbara Clerbaux,Gilles De Lentdecker,Laurent Favart,Johny Jaramillo,K Lee,Mostafa Mahdavikhorrami,Inna Makarenko,Andrea Malara,Santiago Paredes,Laurent Pétré,Nicolas Postiau,Elizabeth Starling,Laurent Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,Didar Dobur,Joscha Knolle,Luka Lambrecht,Gianny Mestdach,Marek Niedziela,Cesar Rendón,Christos Roskas,Amrutha Samalan,Kirill Skovpen,Michael Tytgat,Niels Van den Bossche,Basile Vermassen,Liam Wezenbeek,A Benecke,A Bethani,G Bruno,F Bury,C Caputo,P David,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,Vincent Lemaitre,Kuntal Mondal,Jessica Prisciandaro,Angela Taliercio,Tu Thong Tran,Pietro Vischia,Sébastien Wertz,GA Alves,Eduardo Coelho,Carsten Hensel,Arthur Moraes,P Rebello Teles,WL Aldá Júnior,M Alves Gallo Pereira,Barroso Ferreira Filho,H Brandao Malbouisson,Wagner Carvalho,Jose Chinellato,Eliza Melo Da Costa,Gustavo Gil Da Silveira,Dilson de Jesus Damiao,Vitor Dos Santos Sousa,S Fonseca De Souza,Jordan Martins,C Mora Herrera,K Mota Amarilo,Luiz Mundim,Helio Nogima,Alberto Santoro,SM Silva Do Amaral,Andre Sznajder,Mauricio Thiel,F Torres Da Silva De Araujo,A Vilela Pereira,Cesar Augusto Bernardes,Luigi Calligaris,TR Fernandez Perez Tomei,EM Gregores,Pedro G Mercadante,Sergio F Novaes,Sandra S Padula,Aleksandar Aleksandrov,Georgy Antchev,Roumyana Hadjiiska,Plamen Iaydjiev,Milena Misheva,Mircho Rodozov,Mariana Shopova,Georgi Sultanov,Anton Dimitrov,Todor Ivanov,Leander Litov,Borislav Pavlov,Peicho Petkov,Anton Petrov,Elton Shumka,Tongguang Cheng,Tahir Javaid,Monika Mittal,L Yuan,Muhammad Ahmad,Gerry Bauer,Zhen Hu,Samet Lezki,Kai Yi,Guo-Ming Chen,He-Sheng Chen,Mingshui Chen,Fabio Iemmi,Chun-Hua Jiang

Journal

Journal of High Energy Physics

Published Date

2023/7

A search for pairs of dijet resonances with the same mass is conducted in final states with at least four jets. Results are presented separately for the case where the four jet production proceeds via an intermediate resonant state and for nonresonant production. The search uses a data sample corresponding to an integrated luminosity of 138 fb− 1 collected by the CMS detector in proton-proton collisions at= 13 TeV. Model-independent limits, at 95% confidence level, are reported on the production cross section of four-jet and dijet resonances. These first LHC limits on resonant pair production of dijet resonances via high mass intermediate states are applied to a signal model of diquarks that decay into pairs of vector-like quarks, excluding diquark masses below 7.6 TeV for a particular model scenario. There are two events in the tails of the distributions, each with a four-jet mass of 8 TeV and an average dijet mass …

Search for electroweak production of charginos and neutralinos at s= 13TeV in final states containing hadronic decays of WW, WZ, or WH and missing transverse momentum

Authors

Georges Aad,Brad Abbott,Dale Charles Abbott,A Abed Abud,K Abeling,DK Abhayasinghe,SH Abidi,OS AbouZeid,NL Abraham,H Abramowicz,H Abreu,Y Abulaiti,BS Acharya,B Achkar,S Adachi,L Adam,L Adamczyk,L Adamek,J Adelman,M Adersberger,A Adiguzel,S Adorni,T Adye,AA Affolder,Y Afik,C Agapopoulou,MN Agaras,A Aggarwal,C Agheorghiesei,JA Aguilar-Saavedra,F Ahmadov,WS Ahmed,X Ai,G Aielli,S Akatsuka,TPA Åkesson,E Akilli,AV Akimov,K Al Khoury,GL Alberghi,J Albert,MJ Verzini,S Alderweireldt,M Aleksa,IN Aleksandrov,C Alexa,D Alexandre,T Alexopoulos,A Alfonsi,M Alhroob,B Ali,G Alimonti,J Alison,SP Alkire,C Allaire,BMM Allbrooke,BW Allen,PP Allport,A Aloisio,A Alonso,F Alonso,C Alpigiani,AA Alshehri,M Alvarez Estevez,D Álvarez Piqueras,MG Alviggi,Y Amaral Coutinho,A Ambler,L Ambroz,C Amelung,D Amidei,SP Santos,S Amoroso,CS Amrouche,F An,C Anastopoulos,N Andari,T Andeen,CF Anders,JK Anders,A Andreazza,V Andrei,CR Anelli,S Angelidakis,A Angerami,AV Anisenkov,A Annovi,C Antel,MT Anthony,M Antonelli,DJA Antrim,F Anulli,M Aoki,J Aparisi Pozo,L Aperio Bella,G Arabidze,JP Araque,V Araujo Ferraz,R Araujo Pereira,C Arcangeletti,ATH Arce,FA Arduh,JF Arguin,S Argyropoulos,J-H Arling,AJ Armbruster,A Armstrong,O Arnaez,H Arnold,A Artamonov,G Artoni,S Artz,S Asai,N Asbah,EM Asimakopoulou,L Asquith,K Assamagan,R Astalos,RJ Atkin,M Atkinson,NB Atlay,H Atmani,K Augsten,G Avolio,R Avramidou,MK Ayoub,AM Azoulay,G Azuelos,MJ Baca,H Bachacou,K Bachas,M Backes,F Backman,P Bagnaia,M Bahmani,H Bahrasemani,AJ Bailey,VR Bailey,JT Baines,M Bajic,C Bakalis,OK Baker,PJ Bakker,D Bakshi Gupta,S Balaji,EM Baldin,P Balek,F Balli,WK Balunas,J Balz

Journal

The European Physical Journal C

Published Date

2020/2

A search for the electroweak production of charginos and sleptons decaying into final states with two electrons or muons is presented. The analysis is based on 139 fb of proton–proton collisions recorded by the ATLAS detector at the Large Hadron Collider at. Three R-parity-conserving scenarios where the lightest neutralino is the lightest supersymmetric particle are considered: the production of chargino pairs with decays via either W bosons or sleptons, and the direct production of slepton pairs. The analysis is optimised for the first of these scenarios, but the results are also interpreted in the others. No significant deviations from the Standard Model expectations are observed and limits at 95% confidence level are set on the masses of relevant supersymmetric particles in each of the scenarios. For a massless lightest neutralino, masses up to 420 are excluded for the production of the lightest-chargino …

Two-particle azimuthal correlations in γp interactions using pPb collisions at sNN= 8.16 TeV

Authors

Armen Tumasyan,Wolfgang Adam,Thomas Bergauer,Marko Dragicevic,A Escalante Del Valle,Rudolf Fruehwirth,Manfred Jeitler,Natascha Krammer,Lukas Lechner,Dietrich Liko,Ivan Mikulec,Florian Michael Pitters,Navid Rad,Jochen Schieck,Robert Schöfbeck,Markus Spanring,Sebastian Templ,Wolfgang Waltenberger,C-E Wulz,Mateusz Zarucki,Mohamed Rashad Darwish,Eddi A De Wolf,Tahys Janssen,Tomas Kello,Aleksandra Lelek,Maxim Pieters,H Rejeb Sfar,Pierre Van Mechelen,Senne Van Putte,F Blekman,ES Bols,SS Chhibra,J D'Hondt,J De Clercq,D Lontkovskyi,S Lowette,I Marchesini,S Moortgat,A Morton,D Müller,Q Python,S Tavernier,W Van Doninck,P Van Mulders,D Beghin,B Bilin,B Clerbaux,G De Lentdecker,B Dorney,L Favart,A Grebenyuk,AK Kalsi,I Makarenko,L Moureaux,L Pétré,A Popov,N Postiau,E Starling,L Thomas,C Vander Velde,Pascal Vanlaer,David Vannerom,Liam Wezenbeek,Tom Cornelis,Didar Dobur,Marek Gruchala,Illia Khvastunov,Gianny Mestdach,Marek Niedziela,Christos Roskas,Kirill Skovpen,Michael Tytgat,Willem Verbeke,Basile Vermassen,Martina Vit,Agni Bethani,Giacomo Bruno,F Bury,Claudio Caputo,Pieter David,Christophe Delaere,Martin Delcourt,Izzeddin Suat Donertas,Andrea Giammanco,Vincent Lemaitre,Kuntal Mondal,Jessica Prisciandaro,Angela Taliercio,Maksym Teklishyn,Pietro Vischia,Sébastien Wertz,Sophie Wuyckens,GA Alves,Carsten Hensel,Arthur Moraes,WL Aldá Júnior,E Belchior Batista Das Chagas,H Brandao Malbouisson,Wagner Carvalho,Jose Chinellato,Eduardo Coelho,Eliza Melo Da Costa,Gustavo Gil Da Silveira,D De Jesus Damiao,S Fonseca De Souza,Jordan Martins,D Matos Figueiredo,M Medina Jaime,C Mora Herrera,Luiz Mundim,Helio Nogima,P Rebello Teles,LJ Sanchez Rosas,Alberto Santoro,SM Silva Do Amaral,Andre Sznajder,Mauricio Thiel,F Torres Da Silva De Araujo,A Vilela Pereira,Cesar Augusto Bernardes,Luigi Calligaris,TR Fernandez Perez Tomei,EM Gregores,DS Lemos,Pedro G Mercadante,Sergio F Novaes,Sandra S Padula,Aleksandar Aleksandrov,Georgy Antchev,I Atanassov,Roumyana Hadjiiska,Plamen Iaydjiev,Milena Misheva,Mircho Rodozov,Mariana Shopova,Georgi Sultanov,Anton Dimitrov,Todor Ivanov,Leander Litov,Borislav Pavlov,Peicho Petkov,Anton Petrov,Tongguang Cheng,Wenxing Fang,Qianying Guo,Monika Mittal,Hanwen Wang,Li Yuan,Muhammad Ahmad,Gerry Bauer

Journal

Physics Letters B

Published Date

2023/9/10

The first measurements of the Fourier coefficients (V n Δ) of the azimuthal distributions of charged hadrons emitted from photon-proton (γp) interactions are presented. The data are extracted from 68.8 nb− 1 of ultra-peripheral proton-lead (pPb) collisions at s NN= 8.16 TeV using the CMS detector. The high energy lead ions produce a flux of photons that can interact with the oncoming proton. This γp system provides a set of unique initial conditions with multiplicity lower than in photon-lead collisions but comparable to recent electron-positron and electron-proton data. The V n Δ coefficients are presented in ranges of event multiplicity and transverse momentum (p T) and are compared to corresponding hadronic minimum bias pPb results. For a given multiplicity range, the mean p T of charged particles is smaller in γp than in pPb collisions. For both the γp and pPb samples, V 1 Δ is negative, V 2 Δ is positive, and V 3 …

Measurement of the top quark mass using a profile likelihood approach with the lepton + jets final states in proton–proton collisions at

Authors

Armen Tumasyan,W Adam,JW Andrejkovic,T Bergauer,S Chatterjee,K Damanakis,M Dragicevic,A Escalante Del Valle,PS Hussain,M Jeitler,N Krammer,L Lechner,D Liko,I Mikulec,P Paulitsch,FM Pitters,J Schieck,R Schöfbeck,D Schwarz,M Sonawane,S Templ,W Waltenberger,C-E Wulz,MR Darwish,T Janssen,T Kello,H Rejeb Sfar,P Van Mechelen,ES Bols,J D’hondt,A De Moor,M Delcourt,H El Faham,S Lowette,S Moortgat,A Morton,D Müller,AR Sahasransu,S Tavernier,W Van Doninck,D Vannerom,B Clerbaux,G De Lentdecker,L Favart,D Hohov,J Jaramillo,K Lee,M Mahdavikhorrami,I Makarenko,A Malara,S Paredes,L Pétré,N Postiau,L Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,D Dobur,J Knolle,L Lambrecht,G Mestdach,C Rendón,A Samalan,K Skovpen,M Tytgat,N Van Den Bossche,B Vermassen,L Wezenbeek,A Benecke,G Bruno,F Bury,C Caputo,P David,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,V Lemaitre,K Mondal,A Taliercio,TT Tran,P Vischia,S Wertz,GA Alves,E Coelho,C Hensel,A Moraes,P Rebello Teles,WL Aldá Júnior,M Alves Gallo Pereira,M Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,V Dos Santos Sousa,S Fonseca De Souza,J Martins,C Mora Herrera,K Mota Amarilo,L Mundim,H Nogima,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,PG Mercadante,SF Novaes,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,E Shumka,S Thakur,T Cheng,T Javaid,M Mittal,L Yuan,M Ahmad,G Bauer,Z Hu,S Lezki,K Yi,GM Chen,HS Chen,M Chen,F Iemmi,CH Jiang,A Kapoor,H Liao,Z-A Liu

Journal

The European Physical Journal C

Published Date

2023/10/25

The mass of the top quark is measured in 36.3 of LHC proton–proton collision data collected with the CMS detector at . The measurement uses a sample of top quark pair candidate events containing one isolated electron or muon and at least four jets in the final state. For each event, the mass is reconstructed from a kinematic fit of the decay products to a top quark pair hypothesis. A profile likelihood method is applied using up to four observables per event to extract the top quark mass. The top quark mass is measured to be . This approach significantly improves the precision over previous measurements.

A search for new physics in central exclusive production using the missing mass technique with the CMS detector and the CMS-TOTEM precision proton spectrometer

Authors

A Tumasyan,W Adam,JW Andrejkovic,T Bergauer,S Chatterjee,K Damanakis,M Dragicevic,A Valle,PS Hussain,M Jeitler,N Krammer,L Lechner,D Liko,I Mikulec,P Paulitsch,FM Pitters,J Schieck,R Schöfbeck,D Schwarz,S Templ,W Waltenberger,C-E Wulz,MR Darwish,T Janssen,T Kello,H Rejeb Sfar,P Van Mechelen,ES Bols,J D’Hondt,A De Moor,M Delcourt,H El Faham,S Lowette,S Moortgat,A Morton,D Müller,AR Sahasransu,S Tavernier,W Van Doninck,D Vannerom,B Clerbaux,G De Lentdecker,L Favart,D Hohov,J Jaramillo,K Lee,M Mahdavikhorrami,I Makarenko,A Malara,S Paredes,L Pétré,N Postiau,E Starling,L Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,D Dobur,J Knolle,L Lambrecht,G Mestdach,M Niedziela,C Rendón,C Roskas,A Samalan,K Skovpen,M Tytgat,N Bossche,B Vermassen,L Wezenbeek,A Benecke,G Bruno,F Bury,C Caputo,P David,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,V Lemaitre,K Mondal,J Prisciandaro,A Taliercio,TT Tran,P Vischia,S Wertz,GA Alves,E Coelho,C Hensel,A Moraes,P Rebello Teles,WL Júnior,M Pereira,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,V Sousa,S Fonseca De Souza,J Martins,C Mora Herrera,K Mota Amarilo,L Mundim,H Nogima,A Santoro,SM Amaral,A Sznajder,M Thiel,F Torres Da Silva De Araujo,A Vilela Pereira,CA Bernardes,L Calligaris,TR Tomei,EM Gregores,PG Mercadante,SF Novaes,Sandra S Padula,A Aleksandrov,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,E Shumka,S Thakur,T Cheng,T Javaid,M Mittal,L Yuan,M Ahmad,G Bauer,Z Hu,S Lezki,K Yi,GM Chen,HS Chen,M Chen,F Iemmi,CH Jiang,A Kapoor

Journal

The European Physical Journal C

Published Date

2023/9

A generic search is presented for the associated production of a Z boson or a photon with an additional unspecified massive particle X,\({\textrm {pp}}\rightarrow {\textrm {pp}}+{{\textrm {Z}}}/\upgamma+{{\textrm {X}}}\), in proton-tagged events from proton–proton collisions at, recorded in 2017 with the CMS detector and the CMS-TOTEM precision proton spectrometer. The missing mass spectrum is analysed in the 600–1600 GeV range and a fit is performed to search for possible deviations from the background expectation. No significant excess in data with respect to the background predictions has been observed. Model-independent upper limits on the visible production cross section of\({\textrm {pp}}\rightarrow {\textrm {pp}}+{{\textrm {Z}}}/\upgamma+{{\textrm {X}}}\) are set.

Measurements of the azimuthal anisotropy of prompt and nonprompt charmonia in PbPb collisions at = 5.02 TeV

Authors

Armen Tumasyan

Published Date

2023/5/26

The second-order () and third-order () Fourier coefficients describing the azimuthal anisotropy of prompt and nonprompt (from b-hadron decays) J/, as well as prompt (2S) mesons are measured in lead-lead collisions at a center-of-mass energy per nucleon pair of = 5.02 TeV. The analysis uses a data set corresponding to an integrated luminosity of 1.61 nb recorded with the CMS detector. The J/ and (2S) mesons are reconstructed using their dimuon decay channel. The and coefficients are extracted using the scalar product method and studied as functions of meson transverse momentum and collision centrality. The measured values for prompt J/ mesons are found to be larger than those for nonprompt J/ mesons. The prompt J/ values at high are found to be underpredicted by a model incorporating only parton energy loss effects in a quark-gluon plasma medium. Prompt and nonprompt J/ meson and prompt (2S) and values are also reported for the first time, providing new information about heavy quark interactions in the hot and dense medium created in heavy ion collisions.

Measurement of the Higgs boson width and evidence of its off-shell contributions to ZZ production

Journal

Nature Physics

Published Date

2022/11

Since the discovery of the Higgs boson in 2012, detailed studies of its properties have been ongoing. Besides its mass, its width—related to its lifetime—is an important parameter. One way to determine this quantity is to measure its off-shell production, where the Higgs boson mass is far away from its nominal value, and relating it to its on-shell production, where the mass is close to the nominal value. Here we report evidence for such off-shell contributions to the production cross-section of two Z bosons with data from the CMS experiment at the CERN Large Hadron Collider. We constrain the total rate of the off-shell Higgs boson contribution beyond the Z boson pair production threshold, relative to its standard model expectation, to the interval [0.0061, 2.0] at the 95% confidence level. The scenario with no off-shell contribution is excluded at a p-value of 0.0003 (3.6 standard deviations). We measure the width of the …

Review of particle physics

Authors

Particle Data Group,RL Workman,VD Burkert,V Crede,E Klempt,U Thoma,L Tiator,K Agashe,G Aielli,BC Allanach,C Amsler,M Antonelli,EC Aschenauer,DM Asner,H Baer,Sw Banerjee,RM Barnett,L Baudis,CW Bauer,JJ Beatty,VI Belousov,J Beringer,A Bettini,O Biebel,KM Black,E Blucher,R Bonventre,VV Bryzgalov,O Buchmuller,MA Bychkov,RN Cahn,M Carena,A Ceccucci,A Cerri,R Sekhar Chivukula,G Cowan,K Cranmer,O Cremonesi,G D'Ambrosio,T Damour,D de Florian,A de Gouvêa,T DeGrand,P de Jong,S Demers,BA Dobrescu,M D'Onofrio,M Doser,HK Dreiner,P Eerola,U Egede,S Eidelman,AX El-Khadra,J Ellis,SC Eno,J Erler,VV Ezhela,W Fetscher,BD Fields,A Freitas,H Gallagher,Y Gershtein,T Gherghetta,MC Gonzalez-Garcia,M Goodman,C Grab,AV Gritsan,C Grojean,DE Groom,M Grünewald,A Gurtu,T Gutsche,HE Haber,Matthieu Hamel,C Hanhart,S Hashimoto,Y Hayato,A Hebecker,S Heinemeyer,JJ Hernández-Rey,K Hikasa,J Hisano,A Höcker,J Holder,L Hsu,J Huston,T Hyodo,Al Ianni,M Kado,M Karliner,UF Katz,M Kenzie,VA Khoze,SR Klein,F Krauss,M Kreps,P Križan,B Krusche,Y Kwon,O Lahav,J Laiho,LP Lellouch,J Lesgourgues,AR Liddle,Z Ligeti,CJ Lin,C Lippmann,TM Liss,L Littenberg,C Lourenço,KS Lugovsky,SB Lugovsky,A Lusiani,Y Makida,F Maltoni,T Mannel,AV Manohar,WJ Marciano,A Masoni,J Matthews,UG Meißner,IA Melzer-Pellmann,M Mikhasenko,DJ Miller,D Milstead,RE Mitchell,K Mönig,P Molaro,F Moortgat,M Moskovic,K Nakamura,M Narain,P Nason,S Navas,A Nelles,M Neubert,P Nevski,Y Nir,KA Olive,C Patrignani,JA Peacock,VA Petrov,E Pianori,A Pich,A Piepke,F Pietropaolo,A Pomarol,S Pordes,S Profumo,A Quadt

Journal

Progress of theoretical and experimental physics

Published Date

2022/8

The Review summarizes much of particle physics and cosmology. Using data from previous editions, plus 2,143 new measurements from 709 papers, we list, evaluate, and average measured properties of gauge bosons and the recently discovered Higgs boson, leptons, quarks, mesons, and baryons. We summarize searches for hypothetical particles such as supersymmetric particles, heavy bosons, axions, dark photons, etc. Particle properties and search limits are listed in Summary Tables. We give numerous tables, figures, formulae, and reviews of topics such as Higgs Boson Physics, Supersymmetry, Grand Unified Theories, Neutrino Mixing, Dark Energy, Dark Matter, Cosmology, Particle Detectors, Colliders, Probability and Statistics. Among the 120 reviews are many that are new or heavily revised, including a new review on Machine Learning, and one on Spectroscopy of Light Meson Resonances …

Search for new particles in an extended Higgs sector with four b quarks in the final state at s= 13TeV

Authors

Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,A Escalante Del Valle,Rudolf Fruehwirth,Manfred Jeitler,Natascha Krammer,Lukas Lechner,Dietrich Liko,Ivan Mikulec,Peter Paulitsch,Florian Michael Pitters,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Sebastian Templ,Wolfgang Waltenberger,C-E Wulz,V Makarenko,MR Darwish,EA De Wolf,Tahys Janssen,T Kello,A Lelek,H Rejeb Sfar,P Van Mechelen,S Van Putte,ES Bols,J D'Hondt,A De Moor,M Delcourt,H El Faham,S Lowette,S Moortgat,A Morton,D Müller,AR Sahasransu,S Tavernier,W Van Doninck,D Vannerom,D Beghin,B Bilin,B Clerbaux,G De Lentdecker,L Favart,AK Kalsi,K Lee,M Mahdavikhorrami,I Makarenko,L Moureaux,S Paredes,L Pétré,A Popov,N Postiau,E Starling,L Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,Tom Cornelis,Didar Dobur,Joscha Knolle,Luka Lambrecht,Gianny Mestdach,Marek Niedziela,Cesar Rendon,Christos Roskas,Amrutha Samalan,Kirill Skovpen,Michael Tytgat,Basile Vermassen,Liam Wezenbeek,A Benecke,A Bethani,G Bruno,F Bury,C Caputo,P David,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,V Lemaitre,K Mondal,J Prisciandaro,A Taliercio,M Teklishyn,TT Tran,P Vischia,S Wertz,GA Alves,C Hensel,A Moraes,P Rebello Teles,WL Aldá Júnior,M Alves Gallo Pereira,M Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,V Dos Santos Sousa,S Fonseca De Souza,C Mora Herrera,K Mota Amarilo,L Mundim,H Nogima,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,F Torres Da Silva De Araujo,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,DS Lemos,PG Mercadante,SF Novaes,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,T Cheng,T Javaid,M Mittal,L Yuan,M Ahmad,G Bauer,C Dozen,Z Hu

Journal

Physics Letters B

Published Date

2022/12/10

A search for a massive resonance X decaying to a pair of spin-0 bosons ϕ that themselves decay to pairs of bottom quarks, is presented. The analysis is restricted to the mass ranges m ϕ from 25 to 100 GeV and m X from 1 to 3 TeV. For these mass ranges, the decay products of each ϕ boson are expected to merge into a single large-radius jet. Jet substructure and flavor identification techniques are used to identify these jets. The search is based on CERN LHC proton-proton collision data at s= 13 TeV, collected with the CMS detector in 2016–2018, corresponding to an integrated luminosity of 138 fb− 1. Model-specific limits, where the two new particles arise from an extended Higgs sector, are set on the product of the production cross section and branching fraction for X→ ϕ ϕ→(b b‾)(b b‾) as a function of the resonances' masses, where both the X→ ϕ ϕ and ϕ→ b b‾ branching fractions are assumed to be 100 …

Observation of same-sign WW production from double parton scattering in proton-proton collisions at = 13 TeV

Authors

CMS collaboration

Journal

arXiv preprint arXiv:2206.02681

Published Date

2022/6/6

The first observation of the production of WW bosons from double parton scattering processes using same-sign electron-muon and dimuon events in proton-proton collisions is reported. The data sample corresponds to an integrated luminosity of 138 fb recorded at a center-of-mass energy of 13 TeV using the CMS detector at the CERN LHC. Multivariate discriminants are used to distinguish the signal process from the main backgrounds. A binned maximum likelihood fit is performed to extract the signal cross section. The measured cross section for production of same-sign W bosons decaying leptonically is 80.7 11.2 (stat) (syst) 12.1 (model) fb, whereas the measured fiducial cross section is 6.28 0.81 (stat) 0.69 (syst) 0.37 (model) fb. The observed significance of the signal is 6.2 standard deviations above the background-only hypothesis.

Beam test performance of a prototype module with Short Strip ASICs for the CMS HL-LHC tracker upgrade

Authors

Wolfgang Adam,T Bergauer,K Damanakis,M Dragicevic,R Frühwirth,H Steininger,W Beaumont,D Di Croce,X Janssen,T Kello,A Lelek,P Van Mechelen,S Van Putte,M Delcourt,A De Moor,J d'Hondt,S Lowette,A Morton,D Muller,AR Sahasransu,E Sørensen Bols,D Vannerom,Y Allard,B Clerbaux,S Dansana,G De Lentdecker,W Deng,L Favart,D Hohov,A Khalilzadeh,K Lee,M Mahdavikhorrami,I Makarenko,S Paredes,N Postiau,F Robert,L Thomas,M Vanden Bemden,P Vanlaer,H Wang,Y Yang,A Benecke,A Bethani,G Bruno,F Bury,C Caputo,P David,A Deblaere,C Delaere,IS Donertas,A Giammanco,S Jain,V Lemaitre,K Mondal,J Prisciandaro,N Szilasi,A Taliercio,M Teklishyn,P Vischia,S Wertz,V Brigljević,B Chitroda,D Ferenček,D Majumder,S Mishra,M Roguljić,A Starodumov,T Šuša,P Eerola,E Brücken,T Lampén,L Martikainen,E Tuominen,A Karadzhinova-Ferrer,P Luukka,H Petrow,T Tuuva,J-L Agram,J Andrea,D Apparu,D Bloch,C Bonnin,J-M Brom,E Chabert,L Charles,C Collard,E Dangelser,U Goerlach,C Grimault,L Gross,C Haas,M Krauth,E Nibigira,N Ollivier-Henry,E Silva Jiménez,E Asilar,G Baulieu,G Boudoul,L Caponetto,N Chanon,D Contardo,P Dené,T Dupasquier,G Galbit,N Lumb,L Mirabito,B Nodari,M Vander Donckt,S Viret,V Botta,L Feld,W Karpinski,K Klein,M Lipinski,D Louis,D Meuser,A Pauls,G Pierschel,M Rauch,N Röwert,J Schulz,M Teroerde,M Wlochal,C Dziwok,G Fluegge,O Pooth,A Stahl,T Ziemons,S Bhattacharya,F Blekman,A Campbell,C Cheng,S Consuegra Rodriguez,G Eckerlin,D Eckstein,E Gallo,M Guthoff,C Kleinwort,R Mankel,H Maser,C Muhl,A Mussgiller,A Nürnberg,Y Otarid,O Reichelt,M Savitskyi,P Schütze,R Stever,N Tonon,A Velyka

Journal

Journal of instrumentation

Published Date

2022/6/30

The Large Hadron Collider (LHC) will be upgraded to operate at increased instantaneous luminosities of up to 7.5× 1034 cm− 2s− 1, which will result in up to 200 proton-proton interactions per bunch crossing, with the goal of accumulating a total integrated luminosity of 3ab− 1 [1]. The CMS detector [2] will be upgraded [3, 4] to handle these new data-taking conditions. The current CMS trigger system [5] consists of the Level-1 (L1) trigger, instrumented by custom hardware processor boards, and a software High Level Trigger (HLT). The current L1 trigger receives information from detector sub-systems and performs an initial selection within a fixed latency of 4μs, with a maximum output rate of 100 kHz. When an event is selected by the L1 trigger, the detector is fully read out to the HLT system, where a final decision is made on whether to store the event. The new L1 trigger system will use a latency of up to 12.5 μs and …

Search for Flavor-Changing Neutral Current Interactions of the Top Quark and Higgs Boson in Final States with Two Photons in Proton-Proton Collisions at

Authors

Aram Hayrapetyan

Published Date

2023/12/11

A search for the production of a top quark in association with a photon and additional jets via flavor changing neutral current interactions is presented. The analysis uses proton-proton collision data recorded by the CMS detector at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 138 fb. The search is performed by looking for processes where a single top quark is produced in association with a photon, or a pair of top quarks where one of the top quarks decays into a photon and an up or charm quark. Events with an electron or a muon, a photon, one or more jets, and missing transverse momentum are selected. Multivariate analysis techniques are used to discriminate signal and standard model background processes. No significant deviation is observed over the predicted background. Observed (expected) upper limits are set on the branching fractions of top quark decays: (tu) 0.9510 (1.2010) and (tc) 1.5110 (1.5410) at 95% confidence level, assuming a single nonzero coupling at a time. The obtained limit for (tu) is similar to the current best limit, while the limit for (tc) is significantly tighter than previous results.

Report of the topical group on Higgs physics for snowmass 2021: the case for precision Higgs physics

Authors

Sally Dawson,Patrick Meade,Isobel Ojalvo,Caterina Vernieri,S Adhikari,F Abu-Ajamieh,A Alberta,H Bahl,R Barman,M Basso,A Beniwal,I Bozovi-Jelisav,S Bright-Thonney,V Cairo,F Celiberto,S Chang,M Chen,C Damerell,J Davis,J de Blas,W Dekens,J Duarte,D Egana-Ugrinovic,U Einhaus,Y Gao,D Goncalves,A Gritsan,H Haber,U Heintz,S Homiller,SC Hsu,D Jean,S Kawada,E Khoda,K Kong,N Konstantinidis,A Korytov,S Kyriacou,S Lane,IM Lewis,K Li,S Li,Z Liu,J Luo,L Mandacar-Guerra,C Mantel,J Monroy,M Narain,R Orr,R Pan,A Papaefstathiou,M Peskin,MT Prim,F Rajec,M Ramsey-Musolf,J Reichert,L Reina,T Robens,J Roskes,A Ryd,A Schwartzman,P Scott,J Strube,Su Dong,W Su,M Sullivan,T Tanabe,J Tian,A Tricoli,E Usai,J Vavra,Z Wang,G White,M White,AG Williams,A Woodcock,Y Wu,C Young,Y Zhang,X Zhu,R Zou

Journal

arXiv preprint arXiv:2209.07510

Published Date

2022/9/15

A future Higgs Factory will provide improved precision on measurements of Higgs couplings beyond those obtained by the LHC, and will enable a broad range of investigations across the fields of fundamental physics, including the mechanism of electroweak symmetry breaking, the origin of the masses and mixing of fundamental particles, the predominance of matter over antimatter, and the nature of dark matter. Future colliders will measure Higgs couplings to a few per cent, giving a window to beyond the Standard Model (BSM) physics in the 1-10 TeV range. In addition, they will make precise measurements of the Higgs width, and characterize the Higgs self-coupling. This report details the work of the EF01 and EF02 working groups for the Snowmass 2021 study.

Nuclear modification of Y states in pPb collisions at sNN= 5.02 TeV

Authors

Armen Tumasyan,Wolfgang Adam,Federico Ambrogi,Thomas Bergauer,Marko Dragicevic,Janos Erö,A Escalante Del Valle,Martin Flechl,Rudolf Fruehwirth,Manfred Jeitler,Natascha Krammer,Ilse Krätschmer,Dietrich Liko,Thomas Madlener,Ivan Mikulec,Navid Rad,Jochen Schieck,Robert Schöfbeck,Markus Spanring,Wolfgang Waltenberger,C-E Wulz,Mateusz Zarucki,Vladimir Drugakov,J Suarez Gonzalez,MR Darwish,EA De Wolf,D Di Croce,T Janssen,T Kello,A Lelek,M Pieters,H Rejeb Sfar,H Van Haevermaet,P Van Mechelen,S Van Putte,F Blekman,ES Bols,SS Chhibra,J D'Hondt,J De Clercq,D Lontkovskyi,S Lowette,I Marchesini,S Moortgat,Q Python,S Tavernier,W Van Doninck,P Van Mulders,D Beghin,B Bilin,B Clerbaux,G De Lentdecker,H Delannoy,B Dorney,L Favart,A Grebenyuk,AK Kalsi,L Moureaux,A Popov,N Postiau,E Starling,L Thomas,C Vander Velde,P Vanlaer,D Vannerom,T Cornelis,D Dobur,I Khvastunov,M Niedziela,C Roskas,K Skovpen,M Tytgat,W Verbeke,B Vermassen,M Vit,G Bruno,C Caputo,P David,C Delaere,M Delcourt,A Giammanco,V Lemaitre,J Prisciandaro,A Saggio,P Vischia,J Zobec,GA Alves,G Correia Silva,C Hensel,A Moraes,E Belchior Batista Das Chagas,W Carvalho,J Chinellato,E Coelho,EM Da Costa,GG Da Silveira,D De Jesus Damiao,C De Oliveira Martins,S Fonseca De Souza,Hb Malbouisson,J Martins,D Matos Figueiredo,M Medina Jaime,M Melo De Almeida,C Mora Herrera,L Mundim,H Nogima,WL Prado Da Silva,P Rebello Teles,LJ Sanchez Rosas,A Santoro,A Sznajder,M Thiel,EJ Tonelli Manganote,F Torres Da Silva De Araujo,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,DS Lemos,PG Mercadante,SF Novaes,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,M Bonchev,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,W Fang,X Gao,L Yuan,M Ahmad,Z Hu,Y Wang,GM Chen,HS Chen,M Chen,CH Jiang,D Leggat

Journal

Physics Letters B

Published Date

2022/12/10

Production cross sections of Image 1, Image 2, and Image 3 states decaying into Image 4 in proton-lead (p Pb) collisions are reported using data collected by the CMS experiment at s NN= 5.02 TeV. A comparison is made with corresponding cross sections obtained with p p data measured at the same collision energy and scaled by the Pb nucleus mass number. The nuclear modification factor for Image 1 is found to be Image 5. Similar results for the excited states indicate a sequential suppression pattern, such that Image 6. The suppression of all states is much less pronounced in p Pb than in PbPb collisions, and independent of transverse momentum Image 7 and center-of-mass rapidity Image 8 of the individual Image 9 state in the studied range Image 10 and Image 11. Models that incorporate final-state effects of bottomonia in pPb collisions are in better agreement with the data than those which only assume …

Analysis of the CP structure of the Yukawa coupling between the Higgs boson and τ leptons in proton-proton collisions at = 13 TeV

Authors

Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Marko Dragicevic,Alberto Escalante Del Valle,Rudolf Fruehwirth,Manfred Jeitler,Natascha Krammer,Lukas Lechner,Dietrich Liko,Ivan Mikulec,Peter Paulitsch,Florian Michael Pitters,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Sebastian Templ,Wolfgang Waltenberger,C-E Wulz,V Makarenko,MR Darwish,EA De Wolf,Tahys Janssen,T Kello,A Lelek,H Rejeb Sfar,P Van Mechelen,S Van Putte,F Blekman,ES Bols,J D’Hondt,M Delcourt,H El Faham,S Lowette,S Moortgat,A Morton,D Müller,AR Sahasransu,S Tavernier,W Van Doninck,P Van Mulders,D Beghin,B Bilin,B Clerbaux,G De Lentdecker,L Favart,A Grebenyuk,AK Kalsi,K Lee,M Mahdavikhorrami,I Makarenko,L Moureaux,L Pétré,A Popov,N Postiau,E Starling,L Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,L Wezenbeek,T Cornelis,D Dobur,J Knolle,L Lambrecht,G Mestdach,M Niedziela,C Roskas,A Samalan,K Skovpen,M Tytgat,B Vermassen,M Vit,A Benecke,A Bethani,G Bruno,F Bury,C Caputo,P David,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,V Lemaitre,K Mondal,J Prisciandaro,A Taliercio,M Teklishyn,TT Tran,P Vischia,S Wertz,GA Alves,C Hensel,A Moraes,WL Aldá Júnior,M Alves Gallo Pereira,Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,S Fonseca De Souza,D Matos Figueiredo,C Mora Herrera,K Mota Amarilo,L Mundim,H Nogima,P Rebello Teles,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,F Torres Da Silva De Araujo,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,DS Lemos,PG Mercadante,SF Novaes,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,T Cheng,T Javaid,M Mittal,L Yuan,M Ahmad,G Bauer,C Dozen,Z Hu,J Martins

Journal

Journal of High Energy Physics

Published Date

2022/6

The first measurement of the CP structure of the Yukawa coupling between the Higgs boson and τ leptons is presented. The measurement is based on data collected in proton-proton collisions at= 13 TeV by the CMS detector at the LHC, corresponding to an integrated luminosity of 137 fb− 1. The analysis uses the angular correlation between the decay planes of τ leptons produced in Higgs boson decays. The effective mixing angle between CP-even and CP-odd τ Yukawa couplings is found to be− 1±19, compared to an expected value of 0±21 at the 68.3% confidence level. The data disfavour the pure CP-odd scenario at 3.0 standard deviations. The results are compatible with predictions for the standard model Higgs boson.

First Search for Exclusive Diphoton Production at High Mass with Tagged Protons in Proton-Proton Collisions at

Authors

Armen Tumasyan,Wolfgang Adam,Thomas Bergauer,Marko Dragicevic,Janos Erö,A Escalante Del Valle,Rudolf Fruehwirth,Manfred Jeitler,Natascha Krammer,Lukas Lechner,Dietrich Liko,Ivan Mikulec,Florian Michael Pitters,Navid Rad,Jochen Schieck,Robert Schöfbeck,Markus Spanring,Sebastian Templ,Wolfgang Waltenberger,C-E Wulz,Mateusz Zarucki,V Makarenko,J Suarez Gonzalez,MR Darwish,EA De Wolf,D Di Croce,X Janssen,T Kello,A Lelek,M Pieters,H Rejeb Sfar,H Van Haevermaet,P Van Mechelen,S Van Putte,F Blekman,ES Bols,SS Chhibra,J D’Hondt,J De Clercq,D Lontkovskyi,S Lowette,I Marchesini,S Moortgat,A Morton,Q Python,S Tavernier,W Van Doninck,P Van Mulders,D Beghin,B Bilin,B Clerbaux,G De Lentdecker,B Dorney,L Favart,A Grebenyuk,AK Kalsi,I Makarenko,L Moureaux,L Petre,A Popov,N Postiau,E Starling,L Thomas,C Vander Velde,P Vanlaer,D Vannerom,Liam Wezenbeek,Tom Cornelis,Didar Dobur,M Gruchala,Illia Khvastunov,Marek Niedziela,Christos Roskas,Kirill Skovpen,Michael Tytgat,Willem Verbeke,Basile Vermassen,Martina Vit,G Bruno,F Bury,C Caputo,P David,C Delaere,M Delcourt,IS Donertas,A Giammanco,V Lemaitre,K Mondal,J Prisciandaro,A Taliercio,M Teklishyn,P Vischia,S Wertz,S Wuyckens,GA Alves,C Hensel,A Moraes,WL Aldá Júnior,E Belchior Batista Das Chagas,H Brandao Malbouisson,W Carvalho,J Chinellato,E Coelho,EM Da Costa,GG Da Silveira,D De Jesus Damiao,S Fonseca De Souza,J Martins,D Matos Figueiredo,M Medina Jaime,C Mora Herrera,L Mundim,H Nogima,P Rebello Teles,LJ Sanchez Rosas,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,F Torres Da Silva De Araujo,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,DS Lemos,PG Mercadante,SF Novaes,Sandra S Padula,A Aleksandrov,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,T Cheng,W Fang,Q Guo,H Wang,L Yuan,M Ahmad,G Bauer,Z Hu

Journal

Physical review letters

Published Date

2022/6/28

A search for exclusive two-photon production via photon exchange in proton-proton collisions, p p→ p γ γ p with intact protons, is presented. The data correspond to an integrated luminosity of 9.4 fb− 1 collected in 2016 using the CMS and TOTEM detectors at a center-of-mass energy of 13 TeV at the LHC. Events are selected with a diphoton invariant mass above 350 GeV and with both protons intact in the final state, to reduce backgrounds from strong interactions. The events of interest are those where the invariant mass and rapidity calculated from the momentum losses of the forward-moving protons match the mass and rapidity of the central, two-photon system. No events are found that satisfy this condition. Interpreting this result in an effective dimension-8 extension of the standard model, the first limits are set on the two anomalous four-photon coupling parameters. If the other parameter is constrained to its …

Search for resonances decaying to three bosons in the hadronic final state in proton-proton collisions at

Authors

Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Marko Dragicevic,A Escalante Del Valle,Rudolf Fruehwirth,Manfred Jeitler,Natascha Krammer,Lukas Lechner,Dietrich Liko,Ivan Mikulec,Peter Paulitsch,Florian Michael Pitters,Jochen Schieck,Robert Schöfbeck,Markus Spanring,Sebastian Templ,Wolfgang Waltenberger,C-E Wulz,V Makarenko,MR Darwish,EA De Wolf,Tahys Janssen,T Kello,A Lelek,H Rejeb Sfar,P Van Mechelen,S Van Putte,F Blekman,ES Bols,J D’Hondt,J De Clercq,M Delcourt,H El Faham,S Lowette,S Moortgat,A Morton,D Müller,AR Sahasransu,S Tavernier,W Van Doninck,P Van Mulders,D Beghin,B Bilin,B Clerbaux,G De Lentdecker,L Favart,A Grebenyuk,AK Kalsi,K Lee,M Mahdavikhorrami,I Makarenko,L Moureaux,L Pétré,A Popov,N Postiau,E Starling,L Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,D Vannerom,Liam Wezenbeek,Tom Cornelis,Didar Dobur,Joscha Knolle,Luka Lambrecht,Gianny Mestdach,Marek Niedziela,Christos Roskas,Amrutha Samalan,Kirill Skovpen,Michael Tytgat,Willem Verbeke,Basile Vermassen,Martina Vit,A Bethani,G Bruno,F Bury,C Caputo,P David,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,V Lemaitre,K Mondal,J Prisciandaro,A Taliercio,M Teklishyn,TT Tran,P Vischia,S Wertz,GA Alves,C Hensel,A Moraes,WL Aldá Júnior,M Alves Gallo Pereira,M Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,S Fonseca De Souza,D Matos Figueiredo,C Mora Herrera,K Mota Amarilo,L Mundim,H Nogima,P Rebello Teles,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,F Torres Da Silva De Araujo,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,DS Lemos,PG Mercadante,SF Novaes,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,T Cheng,Q Guo,T Javaid,M Mittal,H Wang,L Yuan,M Ahmad

Journal

Physical review letters

Published Date

2022/7/6

A search for resonances decaying into a W boson and a radion, where the radion decays into two W bosons, is presented. The data analyzed correspond to an integrated luminosity of 138 fb− 1 recorded in proton-proton collisions with the CMS detector at s= 13 TeV. One isolated charged lepton is required, together with missing transverse momentum and one or two massive large-radius jets, containing the decay products of either two or one W bosons, respectively. No excess over the background estimation is observed. The results are combined with those from a complementary channel with an all-hadronic final state, described in an accompanying paper. Limits are set on parameters of an extended warped extra-dimensional model. These searches are the first of their kind at the LHC.

LHC EFT WG Report: Experimental Measurements and Observables

Authors

Nuno Castro,Kyle Cranmer,Andrei V Gritsan,James Howarth,Giacomo Magni,Ken Mimasu,Juan Rojo,Jeffrey Roskes,Eleni Vryonidou,Tevong You

Journal

arXiv preprint arXiv:2211.08353

Published Date

2022/11/15

The LHC effective field theory working group gathers members of the LHC experiments and the theory community to provide a framework for the interpretation of LHC data in the context of EFT. In this note we discuss experimental observables and corresponding measurements in analysis of the Higgs, top, and electroweak data at the LHC. We review the relationship between operators and measurements relevant for the interpretation of experimental data in the context of a global SMEFT analysis. One of the goals of ongoing effort is bridging the gap between theory and experimental communities working on EFT, and in particular concerning optimised analyses. This note serves as a guide to experimental measurements and observables leading to EFT fits and establishes good practice, but does not present authoritative guidelines how those measurements should be performed.

Search for high-mass resonances decaying to a jet and a Lorentz-boosted resonance in proton-proton collisions at s= 13TeV

Authors

Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Marko Dragicevic,A Escalante Del Valle,Rudolf Fruehwirth,Manfred Jeitler,Natascha Krammer,Lukas Lechner,Dietrich Liko,Ivan Mikulec,Peter Paulitsch,Florian Michael Pitters,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Sebastian Templ,Wolfgang Waltenberger,C-E Wulz,V Makarenko,MR Darwish,EA De Wolf,Tahys Janssen,T Kello,A Lelek,H Rejeb Sfar,P Van Mechelen,S Van Putte,F Blekman,ES Bols,J D'Hondt,M Delcourt,H El Faham,S Lowette,S Moortgat,A Morton,D Müller,AR Sahasransu,S Tavernier,W Van Doninck,P Van Mulders,D Beghin,B Bilin,B Clerbaux,G De Lentdecker,L Favart,A Grebenyuk,AK Kalsi,K Lee,M Mahdavikhorrami,I Makarenko,L Moureaux,L Pétré,A Popov,N Postiau,E Starling,L Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,L Wezenbeek,T Cornelis,D Dobur,J Knolle,L Lambrecht,G Mestdach,M Niedziela,C Roskas,A Samalan,K Skovpen,M Tytgat,B Vermassen,M Vit,A Benecke,A Bethani,G Bruno,F Bury,C Caputo,P David,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,V Lemaitre,K Mondal,J Prisciandaro,A Taliercio,M Teklishyn,TT Tran,P Vischia,S Wertz,GA Alves,C Hensel,A Moraes,WL Aldá Júnior,M Alves Gallo Pereira,M Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,S Fonseca De Souza,D Matos Figueiredo,C Mora Herrera,K Mota Amarilo,L Mundim,H Nogima,P Rebello Teles,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,F Torres Da Silva De Araujo,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,DS Lemos,PG Mercadante,SF Novaes,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,T Cheng,T Javaid,M Mittal,L Yuan,M Ahmad,G Bauer,C Dozen,Z Hu,J Martins

Journal

Physics Letters B

Published Date

2022/9/10

A search is reported for high-mass hadronic resonances that decay to a parton and a Lorentz-boosted resonance, which in turn decays into a pair of partons. The search is based on data collected with the CMS detector at the LHC in proton-proton collisions at s= 13 TeV, corresponding to an integrated luminosity of 138 fb− 1. The boosted resonance is reconstructed as a single wide jet with substructure consistent with a two-body decay. The high-mass resonance is thus considered as a dijet system. The jet substructure information and the kinematic properties of cascade resonance decays are exploited to disentangle the signal from the large quantum chromodynamics multijet background. The dijet mass spectrum is analyzed for the presence of new high-mass resonances, and is found to be consistent with the standard model background predictions. Results are interpreted in a warped extra dimension model …

Search for resonant production of strongly coupled dark matter in proton-proton collisions at 13 TeV

Authors

Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,Alberto Escalante Del Valle,Rudolf Fruehwirth,Manfred Jeitler,Natascha Krammer,Lukas Lechner,Dietrich Liko,Ivan Mikulec,Peter Paulitsch,Florian Michael Pitters,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Sebastian Templ,Wolfgang Waltenberger,C-E Wulz,V Makarenko,MR Darwish,EA De Wolf,Tahys Janssen,T Kello,A Lelek,H Rejeb Sfar,P Van Mechelen,S Van Putte,ES Bols,J D’Hondt,A De Moor,M Delcourt,H El Faham,S Lowette,S Moortgat,A Morton,D Müller,AR Sahasransu,S Tavernier,W Van Doninck,D Vannerom,D Beghin,B Bilin,B Clerbaux,G De Lentdecker,L Favart,AK Kalsi,K Lee,M Mahdavikhorrami,I Makarenko,L Moureaux,S Paredes,L Pétré,A Popov,N Postiau,E Starling,L Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,T Cornelis,D Dobur,J Knolle,L Lambrecht,G Mestdach,M Niedziela,C Rendón,C Roskas,A Samalan,K Skovpen,M Tytgat,B Vermassen,L Wezenbeek,A Benecke,A Bethani,G Bruno,F Bury,C Caputo,P David,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,V Lemaitre,K Mondal,J Prisciandaro,A Taliercio,M Teklishyn,TT Tran,P Vischia,S Wertz,GA Alves,C Hensel,A Moraes,P Rebello Teles,WL Aldá Júnior,M Alves Gallo Pereira,Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,V Dos Santos Sousa,S Fonseca De Souza,C Mora Herrera,K Mota Amarilo,L Mundim,H Nogima,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,F Torres Da Silva De Araujo,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,DS Lemos,PG Mercadante,SF Novaes,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,T Cheng,T Javaid,M Mittal,L Yuan,M Ahmad,G Bauer,C Dozen,Z Hu

Journal

Journal of High Energy Physics

Published Date

2022/6

The first collider search for dark matter arising from a strongly coupled hidden sector is presented and uses a data sample corresponding to 138 fb− 1, collected with the CMS detector at the CERN LHC, at= 13 TeV. The hidden sector is hypothesized to couple to the standard model (SM) via a heavy leptophobic Z′ mediator produced as a resonance in proton-proton collisions. The mediator decay results in two “semivisible” jets, containing both visible matter and invisible dark matter. The final state therefore includes moderate missing energy aligned with one of the jets, a signature ignored by most dark matter searches. No structure in the dijet transverse mass spectra compatible with the signal is observed. Assuming the Z′ boson has a universal coupling of 0.25 to the SM quarks, an inclusive search, relevant to any model that exhibits this kinematic behavior, excludes mediator masses of 1.5–4.0 TeV at 95 …

Observation of the Meson in Pb-Pb and Collisions at and Measurement of its Nuclear Modification Factor

Authors

Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Marko Dragicevic,A Escalante Del Valle,Rudolf Fruehwirth,Manfred Jeitler,Natascha Krammer,Lukas Lechner,Dietrich Liko,Ivan Mikulec,Peter Paulitsch,Florian Michael Pitters,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Sebastian Templ,Wolfgang Waltenberger,C-E Wulz,V Makarenko,MR Darwish,EA De Wolf,T Janssen,T Kello,A Lelek,H Rejeb Sfar,P Van Mechelen,S Van Putte,F Blekman,ES Bols,J D’Hondt,M Delcourt,H El Faham,S Lowette,S Moortgat,A Morton,D Müller,AR Sahasransu,S Tavernier,W Van Doninck,P Van Mulders,D Beghin,B Bilin,B Clerbaux,G De Lentdecker,L Favart,A Grebenyuk,AK Kalsi,K Lee,M Mahdavikhorrami,I Makarenko,L Moureaux,L Pétré,A Popov,N Postiau,E Starling,L Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,Liam Wezenbeek,Tom Cornelis,Didar Dobur,Joscha Knolle,Luka Lambrecht,Gianny Mestdach,Marek Niedziela,Christos Roskas,Amrutha Samalan,Kirill Skovpen,Michael Tytgat,Basile Vermassen,Martina Vit,A Benecke,A Bethani,G Bruno,F Bury,C Caputo,P David,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,V Lemaitre,K Mondal,J Prisciandaro,A Taliercio,M Teklishyn,TT Tran,P Vischia,S Wertz,GA Alves,C Hensel,A Moraes,WL Aldá Júnior,M Alves Gallo Pereira,M Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,S Fonseca De Souza,D Matos Figueiredo,C Mora Herrera,K Mota Amarilo,L Mundim,H Nogima,P Rebello Teles,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,F Torres Da Silva De Araujo,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,DS Lemos,PG Mercadante,SF Novaes,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,T Cheng,T Javaid,M Mittal,L Yuan,M Ahmad,G Bauer,C Dozen,Z Hu,J Martins

Journal

Physical review letters

Published Date

2022/6/21

The B c+ meson is observed for the first time in heavy ion collisions. Data from the CMS detector are used to study the production of the B c+ meson in lead-lead (Pb-Pb) and proton-proton (p p) collisions at a center-of-mass energy per nucleon pair of s N N= 5.02 TeV, via the B c+→(J/ψ→ μ+ μ−) μ+ ν μ decay. The B c+ nuclear modification factor, derived from the Pb-Pb–to–p p ratio of production cross sections, is measured in two bins of the trimuon transverse momentum and of the Pb-Pb collision centrality. The B c+ meson is shown to be less suppressed than quarkonia and most of the open heavy-flavor mesons, suggesting that effects of the hot and dense nuclear matter created in heavy ion collisions contribute to its production. This measurement sets forth a promising new probe of the interplay of suppression and enhancement mechanisms in the production of heavy-flavor mesons in the quark-gluon plasma.

Probing Charm Quark Dynamics via Multiparticle Correlations in Pb-Pb Collisions at

Authors

Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Marko Dragicevic,A Escalante Del Valle,Rudolf Fruehwirth,Manfred Jeitler,Natascha Krammer,Lukas Lechner,Dietrich Liko,Ivan Mikulec,Peter Paulitsch,Florian Michael Pitters,Jochen Schieck,Robert Schöfbeck,Markus Spanring,Sebastian Templ,Wolfgang Waltenberger,C-E Wulz,V Makarenko,MR Darwish,EA De Wolf,Tahys Janssen,T Kello,A Lelek,H Rejeb Sfar,P Van Mechelen,S Van Putte,F Blekman,ES Bols,J D’Hondt,J De Clercq,M Delcourt,H El Faham,S Lowette,S Moortgat,A Morton,D Müller,AR Sahasransu,S Tavernier,W Van Doninck,P Van Mulders,D Beghin,B Bilin,B Clerbaux,G De Lentdecker,L Favart,A Grebenyuk,AK Kalsi,K Lee,M Mahdavikhorrami,I Makarenko,L Moureaux,L Pétré,A Popov,N Postiau,E Starling,L Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,D Vannerom,Liam Wezenbeek,Tom Cornelis,Didar Dobur,Joscha Knolle,Luka Lambrecht,Gianny Mestdach,Marek Niedziela,Christos Roskas,Amrutha Samalan,Kirill Skovpen,TT Tran,Michael Tytgat,Willem Verbeke,Basile Vermassen,Martina Vit,A Bethani,G Bruno,F Bury,C Caputo,P David,C Delaere,IS Donertas,A Giammanco,K Jaffel,V Lemaitre,K Mondal,J Prisciandaro,A Taliercio,M Teklishyn,P Vischia,S Wertz,S Wuyckens,GA Alves,C Hensel,A Moraes,WL Aldá Júnior,M Alves Gallo Pereira,M Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,S Fonseca De Souza,D Matos Figueiredo,C Mora Herrera,K Mota Amarilo,L Mundim,H Nogima,P Rebello Teles,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,F Torres Da Silva De Araujo,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,DS Lemos,PG Mercadante,SF Novaes,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,T Cheng,W Fang,Q Guo,T Javaid,M Mittal,H Wang,L Yuan

Journal

Physical review letters

Published Date

2022/7/5

Multiparticle azimuthal correlations of prompt D 0 mesons are measured in Pb-Pb collisions at a nucleon-nucleon center-of-mass energy of s NN= 5.02 TeV. For the first time, a four-particle cumulant method is used to extract the second Fourier coefficient of the azimuthal distribution (v 2) of D 0 mesons as a function of event centrality and the D 0 transverse momentum. The ratios of the four-particle v 2 values to previously measured two-particle cumulant results provide direct experimental access to event-by-event fluctuations of charm quark azimuthal anisotropies. These ratios are also found to be comparable to those of inclusive charged particles in the event. However, hints of deviations are seen in the most central and peripheral collisions. To investigate the origin of flow fluctuations in the charm sector, these measurements are compared to a model implementing fluctuations of charm quark energy loss via …

Search for high-mass exclusive WW and ZZ production in proton-proton collisions at = 13 TeV

Authors

CMS Collaboration

Journal

arXiv e-prints

Published Date

2022/11

A search is performed for exclusive high-mass WW and ZZ production in proton-proton collisions using intact forward protons reconstructed in near-beam detectors, with both weak bosons decaying into boosted and merged jets. The analysis is based on a sample of proton-proton collisions collected by the CMS and TOTEM experiments at = 13 TeV, corresponding to an integrated luminosity of 100 fb . No excess above the standard model background prediction is observed, and upper limits are set on the pp pWWp and pp pZZp cross sections in a fiducial region defined by the diboson invariant mass (VV) 1 TeV (with V= W, Z) and proton fractional momentum loss 0.040.20. The results are interpreted as new limits on dimension-6 and dimension-8 anomalous quartic gauge couplings.

Search for a W′ boson decaying to a vector-like quark and a top or bottom quark in the all-jets final state at = 13 TeV

Authors

Albert M Sirunyan,Armen Tumasyan,Wolfgang Adam,Federico Ambrogi,Ece Asilar,Thomas Bergauer,Johannes Brandstetter,Marko Dragicevic,Janos Erö,Alberto Escalante Del Valle,Martin Flechl,Rudolf Fruehwirth,Vasile Mihai Ghete,Josef Hrubec,Manfred Jeitler,Natascha Krammer,Ilse Krätschmer,Dietrich Liko,Thomas Madlener,Ivan Mikulec,Navid Rad,Herbert Rohringer,Jochen Schieck,Robert Schöfbeck,Markus Spanring,Daniel Spitzbart,Anton Taurok,Wolfgang Waltenberger,Johannes Wittmann,C-E Wulz,Mateusz Zarucki,EA De Wolf,D Di Croce,X Janssen,J Lauwers,M Pieters,H Van Haevermaet,P Van Mechelen,S Abu Zeid,F Blekman,J D’Hondt,J De Clercq,K Deroover,G Flouris,D Lontkovskyi,S Lowette,I Marchesini,S Moortgat,L Moreels,Q Python,K Skovpen,S Tavernier,W Van Doninck,P Van Mulders,I Van Parijs,D Beghin,B Bilin,H Brun,B Clerbaux,G De Lentdecker,H Delannoy,B Dorney,G Fasanella,L Favart,R Goldouzian,A Grebenyuk,AK Kalsi,T Lenzi,J Luetic,N Postiau,E Starling,L Thomas,C Vander Velde,P Vanlaer,D Vannerom,Q Wang,T Cornelis,D Dobur,A Fagot,M Gul,I Khvastunov,D Poyraz,C Roskas,D Trocino,M Tytgat,W Verbeke,B Vermassen,M Vit,N Zaganidis,H Bakhshiansohi,O Bondu,S Brochet,G Bruno,C Caputo,P David,C Delaere,M Delcourt,A Giammanco,G Krintiras,V Lemaitre,A Magitteri,K Piotrzkowski,A Saggio,M Vidal Marono,P Vischia,S Wertz,J Zobec,FL Alves,GA Alves,M Correa Martins Junior,G Correia Silva,C Hensel,A Moraes,ME Pol,P Rebello Teles,E Belchior Batista Das Chagas,W Carvalho,J Chinellato,E Coelho,EM Da Costa,GG Da Silveira,D De Jesus Damiao,C De Oliveira Martins,S Fonseca De Souza,H Malbouisson,D Matos Figueiredo,M Melo De Almeida,C Mora Herrera,L Mundim,H Nogima,WL Prado Da Silva,LJ Sanchez Rosas,A Santoro,A Sznajder,M Thiel,EJ Tonelli Manganote,F Torres Da Silva De Araujo,A Vilela Pereira,S Ahuja,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,PG Mercadante,SF Novaes,SandraS Padula,A Aleksandrov,R Hadjiiska,P Iaydjiev,Andrey Marinov

Journal

Journal of High Energy Physics

Published Date

2019/3

A search for a heavy W′ resonance decaying to one B or T vector-like quark and a top or bottom quark, respectively, is presented. The search uses proton-proton collision data collected in 2016 with the CMS detector at the LHC, corresponding to an integrated luminosity of 35.9 fb− 1 at TeV. Both decay channels result in a final state with a top quark, a Higgs boson, and ab quark, each produced with significant energy. The all-hadronic decays of both the Higgs boson and the top quark are considered. The final-state jets, some of which correspond to merged decay products of a boosted top quark and a Higgs boson, are selected using jet substructure techniques, which help to suppress standard model backgrounds. AW′ boson signal would appear as a narrow peak in the invariant mass distribution of these jets. No significant deviation in data with respect to the standard model background predictions is …

Inclusive nonresonant multilepton probes of new phenomena at

Authors

Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,A Escalante Del Valle,Rudolf Fruehwirth,Manfred Jeitler,Natascha Krammer,Lukas Lechner,Dietrich Liko,Ivan Mikulec,Peter Paulitsch,Florian Michael Pitters,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Sebastian Templ,Wolfgang Waltenberger,C-E Wulz,V Makarenko,MR Darwish,EA De Wolf,Tahys Janssen,T Kello,A Lelek,H Rejeb Sfar,P Van Mechelen,S Van Putte,F Blekman,ES Bols,J D’Hondt,M Delcourt,H El Faham,S Lowette,S Moortgat,A Morton,D Müller,AR Sahasransu,S Tavernier,W Van Doninck,D Vannerom,D Beghin,B Bilin,B Clerbaux,G De Lentdecker,L Favart,AK Kalsi,K Lee,M Mahdavikhorrami,I Makarenko,L Moureaux,S Paredes,L Pétré,A Popov,N Postiau,E Starling,L Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,Tom Cornelis,Didar Dobur,Joscha Knolle,Luka Lambrecht,Gianny Mestdach,Marek Niedziela,Cesar Rendon,Christos Roskas,Amrutha Samalan,Kirill Skovpen,Michael Tytgat,Basile Vermassen,Liam Wezenbeek,A Benecke,A Bethani,G Bruno,F Bury,C Caputo,P David,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,V Lemaitre,K Mondal,J Prisciandaro,A Taliercio,M Teklishyn,TT Tran,P Vischia,S Wertz,GA Alves,C Hensel,A Moraes,P Rebello Teles,WL Aldá Júnior,M Alves Gallo Pereira,M Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,V Dos Santos Sousa,S Fonseca De Souza,C Mora Herrera,K Mota Amarilo,L Mundim,H Nogima,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,F Torres Da Silva De Araujo,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,DS Lemos,PG Mercadante,SF Novaes,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,T Cheng,T Javaid,M Mittal,L Yuan,M Ahmad,G Bauer,C Dozen,Z Hu

Journal

Physical Review D

Published Date

2022/6/14

An inclusive search for nonresonant signatures of beyond the standard model (SM) phenomena in events with three or more charged leptons, including hadronically decaying τ leptons, is presented. The analysis is based on a data sample corresponding to an integrated luminosity of 138 fb− 1 of proton-proton collisions at s= 13 TeV, collected by the CMS experiment at the LHC in 2016–2018. Events are categorized based on the lepton and b-tagged jet multiplicities and various kinematic variables. Three scenarios of physics beyond the SM are probed, and signal-specific boosted decision trees are used for enhancing sensitivity. No significant deviations from the background expectations are observed. Lower limits are set at 95% confidence level on the mass of type-III seesaw heavy fermions in the range 845–1065 GeV for various decay branching fraction combinations to SM leptons. Doublet and singlet …

Search for long-lived heavy neutral leptons with displaced vertices in proton-proton collisions at =13 TeV

Authors

Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,Alberto Escalante Del Valle,Rudolf Fruehwirth,Manfred Jeitler,Natascha Krammer,Lukas Lechner,Dietrich Liko,Ivan Mikulec,Peter Paulitsch,Florian Michael Pitters,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Sebastian Templ,Wolfgang Waltenberger,C-E Wulz,V Makarenko,MR Darwish,EA De Wolf,Tahys Janssen,T Kello,A Lelek,H Rejeb Sfar,P Van Mechelen,S Van Putte,F Blekman,ES Bols,J D’Hondt,M Delcourt,H El Faham,S Lowette,S Moortgat,A Morton,D Müller,AR Sahasransu,S Tavernier,W Van Doninck,D Beghin,B Bilin,B Clerbaux,G De Lentdecker,L Favart,A Grebenyuk,AK Kalsi,K Lee,M Mahdavikhorrami,I Makarenko,L Moureaux,L Pétré,A Popov,N Postiau,E Starling,L Thomas,M Vanden Bemden,C Vander Velde,Pascal Vanlaer,Tom Cornelis,Didar Dobur,Joscha Knolle,Luka Lambrecht,Gianny Mestdach,Marek Niedziela,Christos Roskas,Amrutha Samalan,Kirill Skovpen,Michael Tytgat,Basile Vermassen,Martina Vit,Liam Wezenbeek,Anna Benecke,Agni Bethani,Giacomo Bruno,F Bury,Claudio Caputo,Pieter David,Christophe Delaere,Izzeddin Suat Donertas,Andrea Giammanco,Khawla Jaffel,Sa Jain,Vincent Lemaitre,Kuntal Mondal,Jessica Prisciandaro,Angela Taliercio,Maksym Teklishyn,Tu Thong Tran,Pietro Vischia,Sébastien Wertz,GA Alves,Carsten Hensel,Arthur Moraes,Patricia Rebello Teles,Walter Luiz Aldá Júnior,Miguel Alves Gallo Pereira,Barroso Ferreira Filho,Helena Brandao Malbouisson,Wagner Carvalho,Jose Chinellato,Eliza Melo Da Costa,Gustavo Gil Da Silveira,Dilson De Jesus Damiao,Sandro Fonseca De Souza,Clemencia Mora Herrera,Kevin Mota Amarilo,Luiz Mundim,Helio Nogima,Alberto Santoro,Sheila Mara Silva Do Amaral,Andre Sznajder,Mauricio Thiel,Felipe Torres Da Silva De Araujo,Antonio Vilela Pereira,Cesar Augusto Bernardes,Luigi Calligaris,TR Fernandez Perez Tomei,EM Gregores,DS Lemos,Pedro G Mercadante,Sergio F Novaes,Sandra S Padula,Aleksandar Aleksandrov,Georgy Antchev,Roumyana Hadjiiska,Plamen Iaydjiev,Milena Misheva,Mircho Rodozov,Mariana Shopova,Georgi Sultanov,Anton Dimitrov,Todor Ivanov,Leander Litov,Borislav Pavlov,Peicho Petkov,Anton Petrov,Tongguang Cheng,Tahir Javaid,Monika Mittal,Li Yuan,Muhammad Ahmad,Gerry Bauer,Candan Dozen,Zhen Hu,Jordan Martins,Yi Wang

Journal

Journal of High Energy Physics

Published Date

2022/7

A search for heavy neutral leptons (HNLs), the right-handed Dirac or Majorana neutrinos, is performed in final states with three charged leptons (electrons or muons) using proton-proton collision data collected by the CMS experiment at= 13 TeV at the CERN LHC. The data correspond to an integrated luminosity of 138 fb− 1. The HNLs could be produced through mixing with standard model neutrinos ν. For small values of the HNL mass (< 20 GeV) and the square of the HNL-ν mixing parameter (10− 7–10− 2), the decay length of these particles can be large enough so that the secondary vertex of the HNL decay can be resolved with the CMS silicon tracker. The selected final state consists of one lepton emerging from the primary proton-proton collision vertex, and two leptons forming a displaced, secondary vertex. No significant deviations from the standard model expectations are observed, and constraints are …

Erratum to: Searches for long-lived charged particles in pp collisions at = 7 and 8 TeV

Authors

S Chatrchyan,V Khachatryan,AM Sirunyan,A Tumasyan,W Adam,T Bergauer,M Dragicevic,J Erö,C Fabjan,M Friedl,R Frühwirth,VM Ghete,N Hörmann,J Hrubec,M Jeitler,W Kiesenhofer,V Knünz,M Krammer,I Krätschmer,D Liko,I Mikulec,D Rabady,B Rahbaran,C Rohringer,H Rohringer,R Schöfbeck,J Strauss,A Taurok,W Treberer-Treberspurg,W Waltenberger,C-E Wulz,N Shumeiko,S Alderweireldt,M Bansal,S Bansal,T Cornelis,EA De Wolf,X Janssen,A Knutsson,S Luyckx,L Mucibello,S Ochesanu,B Roland,R Rougny,H Van Haevermaet,P Van Mechelen,A Van Spilbeeck,F Blekman,S Blyweert,J D’Hondt,A Kalogeropoulos,J Keaveney,M Maes,A Olbrechts,S Tavernier,W Van Doninck,P Van Mulders,GP Van Onsem,I Villella,B Clerbaux,G De Lentdecker,L Favart,APR Gay,T Hreus,A Léonard,PE Marage,A Mohammadi,L Perniè,T Reis,T Seva,L Thomas,C Vander Velde,P Vanlaer,J Wang,V Adler,K Beernaert,L Benucci,A Cimmino,S Costantini,S Dildick,G Garcia,B Klein,J Lellouch,A Marinov,J Mccartin,AA Ocampo Rios,D Ryckbosch,M Sigamani,N Strobbe,F Thyssen,M Tytgat,S Walsh,E Yazgan,N Zaganidis,S Basegmez,C Beluffi,G Bruno,R Castello,A Caudron,L Ceard,C Delaere,T du Pree,D Favart,L Forthomme,A Giammanco,J Hollar,P Jez,V Lemaitre,J Liao,O Militaru,C Nuttens,D Pagano,A Pin,K Piotrzkowski,A Popov,M Selvaggi,N Beliy,T Caebergs,E Daubie,GH Hammad,GA Alves,M Correa Martins Junior,T Martins,ME Pol,MHG Souza,WL Aldá Júnior,W Carvalho,J Chinellato,A Custódio,EM Da Costa,D De Jesus Damiao,C De Oliveira Martins,S Fonseca De Souza,H Malbouisson,M Malek,D Matos Figueiredo,L Mundim,H Nogima,WL Prado Da Silva,A Santoro,A Sznajder,EJ Tonelli Manganote,A Vilela Pereira,CA Bernardes,FA Dias,TR Fernandez Perez Tomei,EM Gregores,C Lagana,F Marinho,PG Mercadante

Journal

Journal of High Energy Physics

Published Date

2022/11

CMS has uncovered an issue with the muon trigger simulation that impacts particles with| Q|= e/3. Consequently, we retract the cross section and mass limits, and related analysis details for| Q|= e/3 particles set in JHEP 07(2013) 122. The| Q|= 2e/3 results are not affected within the uncertainties. We are supplying in attachment revised plots for figure 10 and figure 11 plus a revised table 8 that have the| Q|= e/3 results removed.

Search for Higgs Boson Pair Production in the Four Quark Final State in Proton-Proton Collisions at

Authors

Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Konstantinos Damanakis,Marko Dragicevic,A Escalante Del Valle,Rudolf Fruehwirth,Manfred Jeitler,Natascha Krammer,Lukas Lechner,Dietrich Liko,Ivan Mikulec,Peter Paulitsch,Florian Michael Pitters,Jochen Schieck,Robert Schöfbeck,Dennis Schwarz,Sebastian Templ,Wolfgang Waltenberger,C-E Wulz,V Makarenko,MR Darwish,EA De Wolf,Tahys Janssen,T Kello,A Lelek,H Rejeb Sfar,P Van Mechelen,S Van Putte,F Blekman,ES Bols,J D’Hondt,M Delcourt,H El Faham,S Lowette,S Moortgat,A Morton,D Müller,AR Sahasransu,S Tavernier,W Van Doninck,D Beghin,B Bilin,B Clerbaux,G De Lentdecker,L Favart,A Grebenyuk,AK Kalsi,K Lee,M Mahdavikhorrami,I Makarenko,L Moureaux,L Pétré,A Popov,N Postiau,E Starling,L Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,Tom Cornelis,Didar Dobur,Joscha Knolle,Luka Lambrecht,Gianny Mestdach,Marek Niedziela,Christos Roskas,Amrutha Samalan,Kirill Skovpen,Michael Tytgat,Basile Vermassen,Liam Wezenbeek,A Benecke,A Bethani,G Bruno,F Bury,C Caputo,P David,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,V Lemaitre,K Mondal,J Prisciandaro,A Taliercio,M Teklishyn,TT Tran,P Vischia,S Wertz,GA Alves,C Hensel,A Moraes,P Rebello Teles,WL Aldá Júnior,M Alves Gallo Pereira,M Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,S Fonseca De Souza,C Mora Herrera,K Mota Amarilo,L Mundim,H Nogima,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,F Torres Da Silva De Araujo,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,DS Lemos,PG Mercadante,SF Novaes,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,T Cheng,T Javaid,M Mittal,L Yuan,M Ahmad,G Bauer,C Dozen,Z Hu,J Martins,Y Wang,K Yi

Journal

Physical review letters

Published Date

2022/8/18

A search for pairs of Higgs bosons produced via gluon and vector boson fusion is presented, focusing on the four b quark final state. The data sample consists of proton-proton collisions at a center-of-mass energy of 13 TeV, collected with the CMS detector at the LHC, and corresponds to an integrated luminosity of 138 fb− 1. No deviation from the background-only hypothesis is observed. A 95% confidence level upper limit on the Higgs boson pair production cross section is observed at 3.9 times the standard model prediction for an expected value of 7.8. Constraints are also set on the modifiers of the Higgs field self-coupling, κ λ, and of the coupling of two Higgs bosons to two vector bosons, κ 2 V. The observed (expected) allowed intervals at the 95% confidence level are− 2.3< κ λ< 9.4 (− 5.0< κ λ< 12.0) and− 0.1< κ 2 V< 2.2 (− 0.4< κ 2 V< 2.5). These are the most stringent observed constraints to date on the H H …

Observation of Bs0 mesons and measurement of the Bs0/B+ yield ratio in PbPb collisions at TeV

Authors

Armen Tumasyan,Wolfgang Adam,Federico Ambrogi,Thomas Bergauer,Marko Dragicevic,Janos Erö,A Escalante Del Valle,Rudolf Fruehwirth,Manfred Jeitler,Natascha Krammer,Lukas Lechner,Dietrich Liko,Thomas Madlener,Ivan Mikulec,Florian Michael Pitters,Navid Rad,J Schieck,R Schöfbeck,M Spanring,S Templ,W Waltenberger,C-E Wulz,M Zarucki,V Makarenko,J Suarez Gonzalez,MR Darwish,EA De Wolf,D Di Croce,X Janssen,T Kello,A Lelek,M Pieters,H Rejeb Sfar,H Van Haevermaet,P Van Mechelen,S Van Putte,F Blekman,ES Bols,SS Chhibra,J D'Hondt,J De Clercq,D Lontkovskyi,S Lowette,I Marchesini,S Moortgat,A Morton,Q Python,S Tavernier,W Van Doninck,P Van Mulders,D Beghin,B Bilin,B Clerbaux,G De Lentdecker,B Dorney,L Favart,A Grebenyuk,AK Kalsi,I Makarenko,L Moureaux,L Pétré,A Popov,N Postiau,E Starling,L Thomas,C Vander Velde,P Vanlaer,D Vannerom,L Wezenbeek,T Cornelis,D Dobur,M Gruchala,I Khvastunov,M Niedziela,C Roskas,K Skovpen,M Tytgat,W Verbeke,B Vermassen,M Vit,G Bruno,F Bury,C Caputo,P David,C Delaere,M Delcourt,IS Donertas,A Giammanco,V Lemaitre,K Mondal,J Prisciandaro,A Taliercio,M Teklishyn,P Vischia,S Wuyckens,J Zobec,GA Alves,C Hensel,A Moraes,WL Aldá Júnior,E Belchior Batista Das Chagas,H Brandao Malbouisson,W Carvalho,J Chinellato,E Coelho,EM Da Costa,GG Da Silveira,D De Jesus Damiao,S Fonseca De Souza,J Martins,D Matos Figueiredo,M Medina Jaime,M Melo De Almeida,C Mora Herrera,L Mundim,H Nogima,P Rebello Teles,LJ Sanchez Rosas,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,EJ Tonelli Manganote,F Torres Da Silva De Araujo,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,DS Lemos,PG Mercadante,SF Novaes,Sandra S Padula,A Aleksandrov,G Antchev,I Atanasov,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,M Bonchev,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,W Fang

Journal

Physics Letters B

Published Date

2022/6/10

The B s 0 and B+ production yields are measured in PbPb collisions at a center-of-mass energy per nucleon pair of 5.02 TeV. The data sample, collected with the CMS detector at the LHC, corresponds to an integrated luminosity of 1.7 nb− 1. The mesons are reconstructed in the exclusive decay channels B→ s 0 J/ψ (μ+ μ−) ϕ (K+ K−) and B→+ J/ψ (μ+ μ−) K+, in the transverse momentum range 7–50 GeV/c and absolute rapidity 0–2.4. The B s 0 meson is observed with a statistical significance in excess of five standard deviations for the first time in nucleus-nucleus collisions. The measurements are performed as functions of the transverse momentum of the B mesons and of the PbPb collision centrality. The ratio of production yields of B s 0 and B+ is measured and compared to theoretical models that include quark recombination effects.

Measurement of the inclusive and differential WZ production cross sections, polarization angles, and triple gauge couplings in pp collisions at = 13 TeV

Authors

Armen Tumasyan,Wolfgang Adam,Janik Walter Andrejkovic,Thomas Bergauer,Suman Chatterjee,Marko Dragicevic,Alberto Escalante Del Valle,Rudolf Fruehwirth,Manfred Jeitler,Natascha Krammer,Lukas Lechner,Dietrich Liko,Ivan Mikulec,Peter Paulitsch,Florian Michael Pitters,Jochen Schieck,Robert Schöfbeck,Markus Spanring,Sebastian Templ,Wolfgang Waltenberger,C-E Wulz,V Makarenko,MR Darwish,EA De Wolf,X Janssen,T Kello,A Lelek,H Rejeb Sfar,P Van Mechelen,S Van Putte,F Blekman,ES Bols,J D’Hondt,J De Clercq,M Delcourt,H El Faham,S Lowette,S Moortgat,A Morton,D Müller,AR Sahasransu,S Tavernier,W Van Doninck,P Van Mulders,D Beghin,B Bilin,B Clerbaux,G De Lentdecker,L Favart,A Grebenyuk,AK Kalsi,K Lee,M Mahdavikhorrami,I Makarenko,L Moureaux,L Pétré,A Popov,N Postiau,E Starling,L Thomas,M Vanden Bemden,C Vander Velde,P Vanlaer,D Vannerom,L Wezenbeek,T Cornelis,D Dobur,J Knolle,L Lambrecht,G Mestdach,M Niedziela,C Roskas,A Samalan,K Skovpen,M Tytgat,W Verbeke,B Vermassen,M Vit,A Bethani,G Bruno,F Bury,C Caputo,P David,C Delaere,IS Donertas,A Giammanco,K Jaffel,Sa Jain,V Lemaitre,K Mondal,J Prisciandaro,A Taliercio,M Teklishyn,TT Tran,P Vischia,S Wertz,GA Alves,C Hensel,A Moraes,WL Aldá Júnior,M Alves Gallo Pereira,Barroso Ferreira Filho,H Brandao Malbouisson,W Carvalho,J Chinellato,EM Da Costa,GG Da Silveira,D De Jesus Damiao,S Fonseca De Souza,D Matos Figueiredo,C Mora Herrera,K Mota Amarilo,L Mundim,H Nogima,P Rebello Teles,A Santoro,SM Silva Do Amaral,A Sznajder,M Thiel,F Torres Da Silva De Araujo,A Vilela Pereira,CA Bernardes,L Calligaris,TR Fernandez Perez Tomei,EM Gregores,DS Lemos,PG Mercadante,SF Novaes,Sandra S Padula,A Aleksandrov,G Antchev,R Hadjiiska,P Iaydjiev,M Misheva,M Rodozov,M Shopova,G Sultanov,A Dimitrov,T Ivanov,L Litov,B Pavlov,P Petkov,A Petrov,T Cheng,Q Guo,T Javaid,M Mittal,H Wang,L Yuan,M Ahmad

Journal

Journal of High Energy Physics

Published Date

2022/7

The associated production of a W and a Z boson is studied in final states with multiple leptons produced in proton-proton (pp) collisions at a centre-of-mass energy of 13 TeV using 137 fb− 1 of data collected with the CMS detector at the LHC. A measurement of the total inclusive production cross section yields σ tot (pp→ WZ)= 50. 6±0. 8 (stat)±1. 5 (syst)±1. 1 (lumi)±0. 5 (theo) pb. Measurements of the fiducial and differential cross sections for several key observables are also performed in all the final-state lepton flavour and charge compositions with a total of three charged leptons, which can be electrons or muons. All results are compared with theoretical predictions computed up to next-to-next-to-leading order in quantum chromodynamics plus next-to-leading or-der in electroweak theory and for various sets of parton distribution functions. The results include direct measurements of the charge asymmetry and the W …

See List of Professors in Andrei Gritsan University(Johns Hopkins University)

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What is Andrei Gritsan's h-index at Johns Hopkins University?

The h-index of Andrei Gritsan has been 145 since 2020 and 250 in total.

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The articles with the titles of

Measurements of azimuthal anisotropy of nonprompt D0 mesons in PbPb collisions at sNN= 5.02 TeV

Review of top quark mass measurements in CMS

Search for Inelastic Dark Matter in Events with Two Displaced Muons and Missing Transverse Momentum in Proton-Proton Collisions at s= 13 TeV

Constraints on anomalous Higgs boson couplings from its production and decay using the WW channel in proton-proton collisions at = 13 TeV

Test of lepton flavor universality in and decays in proton-proton collisions at 13 TeV

Portable acceleration of CMS computing workflows with coprocessors as a service

A search for bottom-type vector-like quark pair production in dileptonic and fully hadronic final states in proton-proton collisions at = 13 TeV

Measurement of the τ lepton polarization in Z boson decays in proton-proton collisions at = 13 TeV

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are the top articles of Andrei Gritsan at Johns Hopkins University.

What are Andrei Gritsan's research interests?

The research interests of Andrei Gritsan are: Particle Physics

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Andrei Gritsan has 375,093 citations in total.

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