Giuseppe Callea
University of Glasgow
H-index: 142
Europe-United Kingdom
About Giuseppe Callea
Giuseppe Callea, With an exceptional h-index of 142 and a recent h-index of 127 (since 2020), a distinguished researcher at University of Glasgow, specializes in the field of Particle Physics.
His recent articles reflect a diverse array of research interests and contributions to the field:
Search for pair-produced higgsinos decaying via Higgs or bosons to final states containing a pair of photons and a pair of -jets with the ATLAS detector
Combination of searches for heavy spin-1 resonances using 139 fb of proton-proton collision data at TeV with the ATLAS detector
Performance of the ATLAS forward proton Time-of-Flight detector in Run 2
Study of Z → l l γ decays at s = 8 TeV with the ATLAS detector
Search for non-resonant production of semi-visible jets using Run 2 data in ATLAS
Climbing to the Top of the ATLAS 13 TeV data
Search for invisible particles produced in association with single top quarks in proton-proton collisions at =13 TeV with the ATLAS detector
Differential cross-section measurements of the production of four charged leptons in association with two jets using the ATLAS detector
Giuseppe Callea Information
University | University of Glasgow |
|---|---|
Position | Research Associate |
Citations(all) | 77625 |
Citations(since 2020) | 62115 |
Cited By | 36837 |
hIndex(all) | 142 |
hIndex(since 2020) | 127 |
i10Index(all) | 514 |
i10Index(since 2020) | 509 |
University Profile Page | University of Glasgow |
Giuseppe Callea Skills & Research Interests
Particle Physics
Top articles of Giuseppe Callea
Search for pair-produced higgsinos decaying via Higgs or bosons to final states containing a pair of photons and a pair of -jets with the ATLAS detector
Authors
Georges Aad,Braden Keim Abbott,Kira Abeling,Nils Julius Abicht,Haider Abidi,Asmaa Aboulhorma,Halina Abramowicz,Henso Abreu,Yiming Abulaiti,Angel Abusleme,Bobby Samir Acharya,Claire Adam Bourdarios,Leszek Adamczyk,Lukas Adamek,Sagar Addepalli,Matt Addison,Jahred Adelman,Aytul Adiguzel,Tim Adye,Tony Affolder,Yoav Afik,Merve Nazlim Agaras,Jinky Agarwala,Anamika Aggarwal,Catalin Agheorghiesei,Ammara Ahmad,Faig Ahmadov,Waleed Syed Ahmed,Sudha Ahuja,Xiaocong Ai,Giulio Aielli,Malak Ait Tamlihat,Brahim Aitbenchikh,Iakov Aizenberg,Melike Akbiyik,Torsten Akesson,Andrei Akimov,Daiya Akiyama,Nilima Nilesh Akolkar,Konie Al Khoury,Gian Luigi Alberghi,Justin Albert,Pietro Albicocco,Guillaume Lucas Albouy,Sara Alderweireldt,Martin Aleksa,Igor Alexandrov,Calin Alexa,Theodoros Alexopoulos,Alice Alfonsi,Fabrizio Alfonsi,Malte Algren,Muhammad Alhroob,Babar Ali,Hanadi Ali,Shahzad Ali,Samuel William Alibocus,Malik Aliev,Gianluca Alimonti,Wael Alkakhi,Corentin Allaire,Benedict Allbrooke,Julia Frances Allen,Cristian Andres Allendes Flores,Philip Patrick Allport,Alberto Aloisio,Francisco Alonso,Cristiano Alpigiani,Manuel Alvarez Estevez,Adrian Alvarez Fernandez,Mariagrazia Alviggi,Mohamed Aly,Yara Do Amaral Coutinho,Alessandro Ambler,Christoph Amelung,Maximilian Amerl,Christoph Ames,Dante Amidei,Susana Patricia Amor dos Santos,Kieran Robert Amos,Viktor Ananiev,Christos Anastopoulos,Timothy Robert Andeen,Stefio Yosse Andrean,Attilio Andreazza,Stylianos Angelidakis,Aaron Angerami,Alexey Anisenkov,Alberto Annovi,Claire Antel,Matthew Thomas Anthony,Egor Antipov,Mario Antonelli,Daniel Joseph Antrim,Fabio Anulli,Masato Aoki,Takumi Aoki,Javier Alberto Aparisi Pozo,Marco Aparo,Ludovica Aperio Bella,Christian Appelt,Aram Apyan,Nordin Aranzabal Barrio,Chiara Arcangeletti,Ayana Tamu Arce,Eloisa Arena,Jean-Francois Arguin,Spyros Argyropoulos,Jan-Hendrik Arling,Aaron James Armbruster,Olivier Arnaez,Hannah Arnold,Zulit Paola Arrubarrena Tame,Giacomo Artoni,Haruka Asada,Kanae Asai,Shoji Asai,Nedaa Alexandra Asbah,Ketevi Adikle Assamagan,Robert Astalos,Rose Atashi,Ryan Justin Atkin,Markus Julian Atkinson,Naim Bora Atlay,Hicham Atmani,Prachi Atmasiddha,Kamil Augsten,Silvia Auricchio,Adrien Auriol,Volker Andreas Austrup,Giuseppe Avolio,Konstantinos Axiotis,Georges Azuelos,Dominik Babal,Henri Bachacou,Konstantinos Bachas,Alexander Bachiu,Karl Filip Backman,Anthony Badea,Paolo Bagnaia,Marzieh Bahmani,Adam Bailey,Virginia Bailey,John Baines,Luke Baines,Christos Bakalis,Keith Baker,Evelin Bakos,Debottam Bakshi Gupta,Rahul Balasubramanian
Published Date
2024/4/8
A search is presented for the pair production of higgsinos in gauge-mediated supersymmetry models, where the lightest neutralinos decay into a light gravitino either via a Higgs or boson. The search is performed with the ATLAS detector at the Large Hadron Collider using 139 fb of proton-proton collisions at a centre-of-mass energy of = 13 TeV. It targets final states in which a Higgs boson decays into a photon pair, while the other Higgs or boson decays into a pair, with missing transverse momentum associated with the two gravitinos. Search regions dependent on the amount of missing transverse momentum are defined by the requirements that the diphoton mass should be consistent with the mass of the Higgs boson, and the mass with the mass of the Higgs or boson. The main backgrounds are estimated with data-driven methods using the sidebands of the diphoton mass distribution. No excesses beyond Standard Model expectations are observed and higgsinos with masses up to 320 GeV are excluded, assuming a branching fraction of 100% for . This analysis excludes higgsinos with masses of 130 GeV for branching fractions to as low as 36%, thus providing complementarity to previous ATLAS searches in final states with multiple leptons or multiple -jets, targeting different decays of the electroweak bosons.
Combination of searches for heavy spin-1 resonances using 139 fb of proton-proton collision data at TeV with the ATLAS detector
Authors
Georges Aad,Erlend Aakvaag,Braden Keim Abbott,Kira Abeling,Nils Julius Abicht,Haider Abidi,Mohammed Aboelela,Asmaa Aboulhorma,Halina Abramowicz,Henso Abreu,Yiming Abulaiti,Bobby Samir Acharya,Anke Ackermann,Claire Adam Bourdarios,Leszek Adamczyk,Sagar Addepalli,Matt Addison,Jahred Adelman,Aytul Adiguzel,Tim Adye,Tony Affolder,Yoav Afik,Merve Agaras,Jinky Agarwala,Anamika Aggarwal,Catalin Agheorghiesei,Ammara Ahmad,Faig Ahmadov,Waleed Syed Ahmed,Sudha Ahuja,Xiaocong Ai,Giulio Aielli,Arya Aikot,Malak Ait Tamlihat,Brahim Aitbenchikh,Iakov Aizenberg,Melike Akbiyik,Torsten Akesson,Andrei Akimov,Daiya Akiyama,Nilima Nilesh Akolkar,Sina Aktas,Konie Al Khoury,Gian Luigi Alberghi,Justin Albert,Pietro Albicocco,Guillaume Lucas Albouy,Sara Alderweireldt,Zackary Lee Alegria,Martin Aleksa,Igor Alexandrov,Calin Alexa,Theodoros Alexopoulos,Fabrizio Alfonsi,Malte Algren,Muhammad Alhroob,Babar Ali,Hanadi Ali,Shahzad Ali,Samuel William Alibocus,Malik Aliev,Gianluca Alimonti,Wael Alkakhi,Corentin Allaire,Benedict Allbrooke,Julia Frances Allen,Cristian Andres Allendes Flores,Philip Allport,Alberto Aloisio,Francisco Alonso,Cristiano Alpigiani,Manuel Alvarez Estevez,Adrian Alvarez Fernandez,Mario Alves Cardoso,Mariagrazia Alviggi,Mohamed Aly,Yara Do Amaral Coutinho,Alessandro Ambler,Christoph Amelung,Maximilian Amerl,Christoph Ames,Dante Amidei,Kyle Amirie,Susana Patricia Amor dos Santos,Kieran Amos,Shiwen An,Viktor Ananiev,Christos Anastopoulos,Timothy Robert Andeen,John Kenneth Anders,Stefio Yosse Andrean,Attilio Andreazza,Stylianos Angelidakis,Aaron Angerami,Alexey Anisenkov,Alberto Annovi,Claire Antel,Matthew Thomas Anthony,Egor Antipov,Mario Antonelli,Fabio Anulli,Masato Aoki,Takumi Aoki,Javier Alberto Aparisi Pozo,Marco Aparo,Ludovica Aperio Bella,Christian Appelt,Aram Apyan,Sergio Javier Arbiol Val,Chiara Arcangeletti,Ayana Tamu Arce,Eloisa Arena,Jean-Francois Arguin,Spyros Argyropoulos,Jan-Hendrik Arling,Olivier Arnaez,Hannah Arnold,Giacomo Artoni,Haruka Asada,Kanae Asai,Shoji Asai,Nedaa Alexandra Asbah,Ketevi Adikle Assamagan,Robert Astalos,Karl Sten Vilhelm Astrand,Rose Atashi,Ryan Atkin,Markus Julian Atkinson,Hicham Atmani,Prachi Atmasiddha,Kamil Augsten,Silvia Auricchio,Adrien Auriol,Volker Andreas Austrup,Giuseppe Avolio,Konstantinos Axiotis,Georges Azuelos,Dominik Babal,Henri Bachacou,Konstantinos Bachas,Alexander Bachiu,Karl Filip Backman,Anthony Badea,Tamas Marton Baer,Paolo Bagnaia,Marzieh Bahmani,Daniel Bahner,Kehang Bai,Adam Bailey,John Baines
Published Date
2024/2/21
A combination of searches for new heavy spin-1 resonances decaying into different pairings of , , or Higgs bosons, as well as directly into leptons or quarks, is presented. The data sample used corresponds to 139 fb of proton-proton collisions at = 13 TeV collected during 2015-2018 with the ATLAS detector at the CERN Large Hadron Collider. Analyses selecting quark pairs (, , , and ) or third-generation leptons ( and ) are included in this kind of combination for the first time. A simplified model predicting a spin-1 heavy vector-boson triplet is used. Cross-section limits are set at the 95% confidence level and are compared with predictions for the benchmark model. These limits are also expressed in terms of constraints on couplings of the heavy vector-boson triplet to quarks, leptons, and the Higgs boson. The complementarity of the various analyses increases the sensitivity to new physics, and the resulting constraints are stronger than those from any individual analysis considered. The data exclude a heavy vector-boson triplet with mass below 5.8 TeV in a weakly coupled scenario, below 4.4 TeV in a strongly coupled scenario, and up to 1.5 TeV in the case of production via vector-boson fusion.
Performance of the ATLAS forward proton Time-of-Flight detector in Run 2
Authors
Georges Aad,Erlend Aakvaag,Braden Keim Abbott,Kira Abeling,Nils Julius Abicht,Haider Abidi,Asmaa Aboulhorma,Halina Abramowicz,Henso Abreu,Yiming Abulaiti,Bobby Samir Acharya,Claire Adam Bourdarios,Leszek Adamczyk,Sagar Addepalli,Matt Addison,Jahred Adelman,Aytul Adiguzel,Tim Adye,Tony Affolder,Yoav Afik,Merve Agaras,Jinky Agarwala,Anamika Aggarwal,Catalin Agheorghiesei,Ammara Ahmad,Faig Ahmadov,Waleed Syed Ahmed,Sudha Ahuja,Xiaocong Ai,Giulio Aielli,Arya Aikot,Malak Ait Tamlihat,Brahim Aitbenchikh,Iakov Aizenberg,Melike Akbiyik,Torsten Akesson,Andrei Akimov,Daiya Akiyama,Nilima Nilesh Akolkar,Sina Aktas,Konie Al Khoury,Gian Luigi Alberghi,Justin Albert,Pietro Albicocco,Guillaume Lucas Albouy,Sara Alderweireldt,Zackary Lee Alegria,Martin Aleksa,Igor Alexandrov,Calin Alexa,Theodoros Alexopoulos,Fabrizio Alfonsi,Malte Algren,Muhammad Alhroob,Babar Ali,Hanadi Ali,Shahzad Ali,Samuel William Alibocus,Malik Aliev,Gianluca Alimonti,Wael Alkakhi,Corentin Allaire,Benedict Allbrooke,Julia Frances Allen,Cristian Andres Allendes Flores,Philip Allport,Alberto Aloisio,Francisco Alonso,Cristiano Alpigiani,Manuel Alvarez Estevez,Adrian Alvarez Fernandez,Mario Alves Cardoso,Mariagrazia Alviggi,Mohamed Aly,Yara Do Amaral Coutinho,Alessandro Ambler,Christoph Amelung,Maximilian Amerl,Christoph Ames,Dante Amidei,Kyle Amirie,Susana Patricia Amor dos Santos,Kieran Robert Amos,Viktor Ananiev,Christos Anastopoulos,Timothy Robert Andeen,Stefio Yosse Andrean,Attilio Andreazza,Stylianos Angelidakis,Aaron Angerami,Alexey Anisenkov,Alberto Annovi,Claire Antel,Matthew Thomas Anthony,Egor Antipov,Mario Antonelli,Fabio Anulli,Masato Aoki,Takumi Aoki,Javier Alberto Aparisi Pozo,Marco Aparo,Ludovica Aperio Bella,Christian Appelt,Aram Apyan,Sergio Javier Arbiol Val,Chiara Arcangeletti,Ayana Tamu Arce,Eloisa Arena,Jean-Francois Arguin,Spyros Argyropoulos,Jan-Hendrik Arling,Olivier Arnaez,Hannah Arnold,Giacomo Artoni,Haruka Asada,Kanae Asai,Shoji Asai,Nedaa Alexandra Asbah,Ketevi Adikle Assamagan,Robert Astalos,Rose Atashi,Ryan Justin Atkin,Markus Julian Atkinson,Hicham Atmani,Prachi Atmasiddha,Kamil Augsten,Silvia Auricchio,Adrien Auriol,Volker Andreas Austrup,Giuseppe Avolio,Konstantinos Axiotis,Georges Azuelos,Dominik Babal,Henri Bachacou,Konstantinos Bachas,Alexander Bachiu,Karl Filip Backman,Anthony Badea,Tamas Marton Baer,Paolo Bagnaia,Marzieh Bahmani,Daniel Bahner,Kehang Bai,Adam Bailey,Virginia Bailey,John Baines,Luke Baines,Keith Baker,Evelin Bakos,Debottam Bakshi Gupta
Published Date
2024/2/13
We present performance studies of the Time-of-Flight (ToF) subdetector of the ATLAS Forward Proton (AFP) detector at the LHC. Efficiencies and resolutions are measured using high-statistics data samples collected at low and moderate pile-up in 2017, the first year when the detectors were installed on both sides of the interaction region. While low efficiencies are observed, of the order of a few percent, the resolutions of the two ToF detectors measured individually are 21 ps and 28 ps, yielding an expected resolution of the longitudinal position of the interaction, , in the central ATLAS detector of mm. This is in agreement with the observed width of the distribution of the difference between measured independently by the central ATLAS tracker and by the ToF detector, of mm.
Study of Z → l l γ decays at s = 8 TeV with the ATLAS detector
Authors
G Aad,B Abbott,D Abbott,K Abeling,S Abidi,A Aboulhorma,H Abramowicz,H Abreu,Y Abulaiti,A Hoffman,B Acharya,B Achkar,C Bourdarios,L Adamczyk,L Adamek,S Addepalli,J Adelman,A Adiguzel,S Adorni,T Adye,A Affolder,Y Afik,M Agaras,J Agarwala,A Aggarwal,C Agheorghiesei,J Aguilar-Saavedra,A Ahmad,F Ahmadov,W Ahmed,S Ahuja,X Ai,G Aielli,I Aizenberg,M Akbiyik,T Åkesson,A Akimov,K Khoury,G Alberghi,J Albert,P Albicocco,S Alderweireldt,M Aleksa,I Aleksandrov,C Alexa,T Alexopoulos,A Alfonsi,F Alfonsi,M Alhroob,B Ali,S Ali,M Aliev,G Alimonti,W Alkakhi,C Allaire,B Allbrooke,P Allport,A Aloisio,F Alonso,C Alpigiani,E Camelia,M Estevez,M Alviggi,M Aly,Y Coutinho,A Ambler,C Amelung,M Amerl,C Ames,D Amidei,S Santos,S Amoroso,K Amos,V Ananiev,C Anastopoulos,T Andeen,J Anders,S Andrean,A Andreazza,S Angelidakis,A Angerami,A Anisenkov,A Annovi,C Antel,M Anthony,E Antipov,M Antonelli,D Antrim,F Anulli,M Aoki,T Aoki,J Pozo,M Aparo,L Bella,C Appelt,N Aranzabal,V Ferraz,C Arcangeletti,A Arce,E Arena,JF Arguin,S Argyropoulos,JH Arling,A Armbruster,O Arnaez,H Arnold,Z Tame,G Artoni,H Asada,K Asai,S Asai,N Asbah,K Assamagan,R Astalos,R Atkin,M Atkinson,N Atlay,H Atmani,P Atmasiddha,K Augsten,S Auricchio,A Auriol,V Austrup,G Avner,G Avolio,K Axiotis,M Ayoub,G Azuelos,D Babal,H Bachacou,K Bachas,A Bachiu,F Backman,A Badea,P Bagnaia,M Bahmani,A Bailey,V Bailey,J Baines,C Bakalis,O Baker,P Bakker,E Bakos,D Gupta,S Balaji,R Balasubramanian,E Baldin,P Balek,E Ballabene,F Balli
Journal
European Physical Journal C
Published Date
2024/2/26
This paper presents a study of Z→ llγ decays with the ATLAS detector at the Large Hadron Collider. The analysis uses a proton–proton data sample corresponding to an integrated luminosity of 20.2 fb− 1 collected at a centre-ofmass energy
Search for non-resonant production of semi-visible jets using Run 2 data in ATLAS
Authors
Georges Aad,B Abbott,Kira Abeling,Nils Julius Abicht,SH Abidi,Asmaa Aboulhorma,Halina Abramowicz,Henso Abreu,Yiming Abulaiti,AC Abusleme Hoffman,Bobby Samir Acharya,C Adam Bourdarios,Leszek Adamczyk,Lukas Adamek,SV Addepalli,MJ Addison,Jahred Adelman,Aytül Adiguzel,Tim Adye,AA Affolder,Yoav Afik,Merve Nazlim Agaras,Jinky Agarwala,Anamika Aggarwal,Catalin Agheorghiesei,Ammara Ahmad,Faig Ahmadov,Waleed Syed Ahmed,Sudha Ahuja,Xiaocong Ai,Giulio Aielli,Arya Aikot,M Ait Tamlihat,Brahim Aitbenchikh,Iakov Aizenberg,Melike Akbiyik,TPA Åkesson,AV Akimov,Daiya Akiyama,Nilima Nilesh Akolkar,Konie Al Khoury,Gian Luigi Alberghi,Justin Albert,Pietro Albicocco,Guillaume Lucas Albouy,Sara Alderweireldt,Martin Aleksa,IN Aleksandrov,Calin Alexa,Theodoros Alexopoulos,Fabrizio Alfonsi,Malte Algren,Muhammad Alhroob,Babar Ali,HMJ Ali,Shahzad Ali,Samuel William Alibocus,Malik Aliev,Gianluca Alimonti,Wael Alkakhi,Corentin Allaire,BMM Allbrooke,Julia Frances Allen,CA Allendes Flores,Philip Patrick Allport,Alberto Aloisio,Francisco Alonso,Cristiano Alpigiani,M Alvarez Estevez,A Alvarez Fernandez,M Alves Cardoso,MG Alviggi,Mohamed Aly,Y Amaral Coutinho,Alessandro Ambler,Christoph Amelung,Maximilian Amerl,CG Ames,Dante Amidei,SP Amor Dos Santos,Kieran Robert Amos,Viktor Ananiev,Christos Anastopoulos,T Andeen,John Kenneth Anders,Stefio Yosse Andrean,Attilio Andreazza,Stylianos Angelidakis,Aaron Angerami,AV Anisenkov,Alberto Annovi,Claire Antel,Matthew Thomas Anthony,Egor Antipov,Mario Antonelli,Fabio Anulli,Masato Aoki,Takumi Aoki,JA Aparisi Pozo,MA Aparo,L Aperio Bella,Christian Appelt,Aram Apyan,N Aranzabal,Chiara Arcangeletti,ATH Arce,Eloisa Arena,Jean-Francois Arguin,Spyros Argyropoulos,J-H Arling,Olivier Arnaez,Hannah Arnold,Giacomo Artoni,Haruka Asada,Kanae Asai,Shoji Asai,Nedaa Alexandra Asbah,Jihad Assahsah,K Assamagan,Robert Astalos,S Atashi,Ryan Justin Atkin,M Atkinson,Hicham Atmani,PA Atmasiddha,Kamil Augsten,Silvia Auricchio,AD Auriol,Volker Andreas Austrup,Giuseppe Avolio,Konstantinos Axiotis,Georges Azuelos,Dominik Babal,Henri Bachacou,Konstantinos Bachas,Alexander Bachiu,F Backman,Anthony Badea,Paolo Bagnaia,Marzieh Bahmani,AJ Bailey,VR Bailey,JT Baines,Luke Baines,Christos Bakalis,OK Baker,Evelin Bakos,D Bakshi Gupta,Veena Balakrishnan,Rahul Balasubramanian
Journal
Physics Letters B
Published Date
2024/1/1
Semi-visible jets, with a significant contribution to the event's missing transverse momentum, can arise in strongly interacting dark sectors. This results in an event topology where one of the jets can be aligned with the direction of the missing transverse momentum. The first search for semi-visible jets produced via a t-channel mediator exchange is presented. The analysis uses proton-proton collisions with an integrated luminosity of 139 fb−1 and a centre-of-mass energy of 13 TeV, collected with the ATLAS detector during the Run 2 of the LHC. No excess over Standard Model predictions is observed. Assuming a coupling strength of unity between the mediator, a Standard Model quark and a dark quark, mediator masses up to 2.7 TeV are excluded at the 95% confidence level. Upper limits on the coupling strength are also derived.
Climbing to the Top of the ATLAS 13 TeV data
Authors
Georges Aad,Erlend Aakvaag,Braden Keim Abbott,Sara Abdelhameed,Kira Abeling,Nils Julius Abicht,Haider Abidi,Mohammed Aboelela,Asmaa Aboulhorma,Halina Abramowicz,Henso Abreu,Yiming Abulaiti,Bobby Samir Acharya,Anke Ackermann,Claire Adam Bourdarios,Leszek Adamczyk,Sagar Addepalli,Matt Addison,Jahred Adelman,Aytul Adiguzel,Tim Adye,Tony Affolder,Yoav Afik,Merve Nazlim Agaras,Jinky Agarwala,Anamika Aggarwal,Catalin Agheorghiesei,Ammara Ahmad,Faig Ahmadov,Waleed Syed Ahmed,Sudha Ahuja,Xiaocong Ai,Giulio Aielli,Arya Aikot,Malak Ait Tamlihat,Brahim Aitbenchikh,Melike Akbiyik,Torsten Akesson,Andrei Akimov,Daiya Akiyama,Nilima Nilesh Akolkar,Sina Aktas,Konie Al Khoury,Gian Luigi Alberghi,Justin Albert,Pietro Albicocco,Guillaume Lucas Albouy,Sara Alderweireldt,Zackary Lee Alegria,Martin Aleksa,Igor Alexandrov,Calin Alexa,Theodoros Alexopoulos,Fabrizio Alfonsi,Malte Algren,Muhammad Alhroob,Babar Ali,Hanadi Ali,Shahzad Ali,Samuel William Alibocus,Malik Aliev,Gianluca Alimonti,Wael Alkakhi,Corentin Allaire,Benedict Allbrooke,Julia Frances Allen,Cristian Andres Allendes Flores,Philip Patrick Allport,Alberto Aloisio,Francisco Alonso,Cristiano Alpigiani,Zainab Mohammad K Alsolami,Manuel Alvarez Estevez,Adrian Alvarez Fernandez,Mario Alves Cardoso,Mariagrazia Alviggi,Mohamed Aly,Yara Do Amaral Coutinho,Alessandro Ambler,Christoph Amelung,Maximilian Amerl,Christoph Ames,Dante Amidei,Kyle Amirie,Susana Patricia Amor dos Santos,Kieran Robert Amos,Shiwen An,Viktor Ananiev,Christos Anastopoulos,Timothy Robert Andeen,Stefio Yosse Andrean,Attilio Andreazza,Stylianos Angelidakis,Aaron Angerami,Alexey Anisenkov,Alberto Annovi,Claire Antel,Egor Antipov,Mario Antonelli,Fabio Anulli,Masato Aoki,Takumi Aoki,Marco Aparo,Ludovica Aperio Bella,Christian Appelt,Aram Apyan,Sergio Javier Arbiol Val,Chiara Arcangeletti,Ayana Tamu Arce,Eloisa Arena,Jean-Francois Arguin,Spyros Argyropoulos,Jan-Hendrik Arling,Olivier Arnaez,Hannah Arnold,Giacomo Artoni,Haruka Asada,Kanae Asai,Shoji Asai,Nedaa Alexandra Asbah,Ketevi Adikle Assamagan,Robert Astalos,Karl Sten Vilhelm Astrand,Rose Atashi,Ryan Justin Atkin,Markus Julian Atkinson,Hicham Atmani,Prachi Atmasiddha,Kamil Augsten,Silvia Auricchio,Adrien Auriol,Volker Andreas Austrup,Giuseppe Avolio,Konstantinos Axiotis,Georges Azuelos,Dominik Babal,Henri Bachacou,Konstantinos Bachas,Alexander Bachiu,Karl Filip Backman,Anthony Badea,Tamas Marton Baer,Paolo Bagnaia,Marzieh Bahmani,Daniel Bahner,Kehang Bai,John Baines,Luke Baines,Keith Baker,Evelin Bakos
Published Date
2024/4/23
The large amount of data recorded with the ATLAS detector at the Large Hadron Collider, corresponding to 140 fb of collisions at a centre-of-mass energy of TeV, has brought our knowledge of the top quark to the next level. The measurement of the topantitop quark pair-production cross-section has reached a precision of 1.8% and the cross-section was measured differentially up to several TeV in several observables including the top-quark transverse momentum and top-quark-pair invariant mass. Single-top-quark production was studied in all production modes. Rare production processes where the top quark is associated with a vector boson, and four-top-quark production, have become accessible and precision measurements of several of these processes have reached cross-section uncertainties of around 10% or smaller. Innovative measurements of the top-quark mass and properties have also emerged, including the observation of quantum entanglement in the top-quark sector and tests of lepton-flavour universality using top-quark decays. Searches for flavour-changing neutral currents in the top-quark sector have been significantly improved, reaching branching-ratio exclusion limits ranging from to . Many of these analyses have been used to set limits on Wilson coefficients within the effective field theory framework.
Search for invisible particles produced in association with single top quarks in proton-proton collisions at =13 TeV with the ATLAS detector
Authors
ATLAS Collaboration atlas. publications@ cern. ch,G Aad,B Abbott,J Abdallah,S Abdel Khalek,O Abdinov,R Aben,B Abi,M Abolins,OS AbouZeid,H Abramowicz,H Abreu,R Abreu,Y Abulaiti,BS Acharya,L Adamczyk,DL Adams,J Adelman,S Adomeit,T Adye,T Agatonovic-Jovin,JA Aguilar-Saavedra,M Agustoni,SP Ahlen,F Ahmadov,G Aielli,H Akerstedt,TPA Åkesson,G Akimoto,AV Akimov,GL Alberghi,J Albert,S Albrand,MJ Alconada Verzini,M Aleksa,IN Aleksandrov,C Alexa,G Alexander,G Alexandre,T Alexopoulos,M Alhroob,G Alimonti,L Alio,J Alison,BMM Allbrooke,LJ Allison,PP Allport,A Aloisio,A Alonso,F Alonso,C Alpigiani,A Altheimer,B Alvarez Gonzalez,MG Alviggi,K Amako,Y Amaral Coutinho,C Amelung,D Amidei,SP Amor Dos Santos,A Amorim,S Amoroso,N Amram,G Amundsen,C Anastopoulos,LS Ancu,N Andari,T Andeen,CF Anders,G Anders,KJ Anderson,A Andreazza,V Andrei,XS Anduaga,S Angelidakis,I Angelozzi,P Anger,A Angerami,F Anghinolfi,AV Anisenkov,N Anjos,A Annovi,M Antonelli,A Antonov,J Antos,F Anulli,M Aoki,L Aperio Bella,R Apolle,G Arabidze,I Aracena,Y Arai,JP Araque,ATH Arce,FA Arduh,J-F Arguin,S Argyropoulos,M Arik,AJ Armbruster,O Arnaez,V Arnal,H Arnold,M Arratia,O Arslan,A Artamonov,G Artoni,S Asai,N Asbah,A Ashkenazi,B Åsman,L Asquith,K Assamagan,R Astalos,M Atkinson,NB Atlay,B Auerbach,K Augsten,M Aurousseau,G Avolio,B Axen,G Azuelos,Y Azuma,MA Baak,AE Baas,C Bacci,H Bachacou,K Bachas,M Backes,M Backhaus,E Badescu,P Bagiacchi,P Bagnaia,Y Bai,T Bain,JT Baines,OK Baker,P Balek,F Balli,E Banas,Sw Banerjee,AAE Bannoura,HS Bansil,L Barak,SP Baranov,EL Barberio,D Barberis,M Barbero,T Barillari,M Barisonzi,T Barklow,N Barlow
Journal
The European Physical Journal C
Published Date
2015/2
A search for the production of single-top-quarks in association with missing energy is performed in proton–proton collisions at a centre-of-mass energy of with the ATLAS experiment at the large hadron collider using data collected in 2012, corresponding to an integrated luminosity of fb. In this search, the boson from the top quark is required to decay into an electron or a muon and a neutrino. No deviation from the standard model prediction is observed, and upper limits are set on the production cross-section for resonant and non-resonant production of an invisible exotic state in association with a right-handed top quark. In the case of resonant production, for a spin- resonance with a mass of GeV, an effective coupling strength above is excluded at 95 confidence level for the top quark and an invisible spin- state with mass between and GeV. In the case of non-resonant production, an effective …
Differential cross-section measurements of the production of four charged leptons in association with two jets using the ATLAS detector
Authors
Georges Aad,B Abbott,Kira Abeling,Nils Julius Abicht,SH Abidi,Asmaa Aboulhorma,Halina Abramowicz,Henso Abreu,Yiming Abulaiti,AC Abusleme Hoffman,Bobby Samir Acharya,C Adam Bourdarios,Leszek Adamczyk,Lukas Adamek,SV Addepalli,MJ Addison,Jahred Adelman,Aytul Adiguzel,Tim Adye,AA Affolder,Yoav Afik,Merve Nazlim Agaras,Jinky Agarwala,Anamika Aggarwal,Catalin Agheorghiesei,Ammara Ahmad,Faig Ahmadov,Waleed Syed Ahmed,Sudha Ahuja,Xiaocong Ai,Giulio Aielli,Arya Aikot,M Ait Tamlihat,Brahim Aitbenchikh,Iakov Aizenberg,Melike Akbiyik,TPA Åkesson,AV Akimov,Daiya Akiyama,Nilima Nilesh Akolkar,Konie Al Khoury,Gian Luigi Alberghi,Justin Albert,Pietro Albicocco,Guillaume Lucas Albouy,Sara Alderweireldt,Martin Aleksa,IN Aleksandrov,Calin Alexa,Theodoros Alexopoulos,Fabrizio Alfonsi,Malte Algren,Muhammad Alhroob,Babar Ali,HMJ Ali,Shahzad Ali,Samuel William Alibocus,Malik Aliev,Gianluca Alimonti,Wael Alkakhi,Corentin Allaire,BMM Allbrooke,Julia Frances Allen,CA Allendes Flores,Philip Patrick Allport,Alberto Aloisio,Francisco Alonso,Cristiano Alpigiani,M Alvarez Estevez,A Alvarez Fernandez,M Alves Cardoso,MG Alviggi,Mohamed Aly,Y Amaral Coutinho,Alessandro Ambler,Christoph Amelung,Maximilian Amerl,CG Ames,Dante Amidei,SP Amor Dos Santos,Kieran Robert Amos,Viktor Ananiev,Christos Anastopoulos,T Andeen,John Kenneth Anders,Stefio Yosse Andrean,Attilio Andreazza,Stylianos Angelidakis,Aaron Angerami,AV Anisenkov,Alberto Annovi,Claire Antel,Matthew Thomas Anthony,Egor Antipov,Mario Antonelli,Fabio Anulli,Masato Aoki,Takumi Aoki,JA Aparisi Pozo,MA Aparo,L Aperio Bella,Christian Appelt,Aram Apyan,N Aranzabal,Chiara Arcangeletti,ATH Arce,Eloisa Arena,Jean-Francois Arguin,Spyros Argyropoulos,J-H Arling,Olivier Arnaez,Hannah Arnold,Giacomo Artoni,Haruka Asada,Kanae Asai,Shoji Asai,Nedaa Alexandra Asbah,Jihad Assahsah,K Assamagan,Robert Astalos,S Atashi,Ryan Justin Atkin,M Atkinson,Hicham Atmani,PA Atmasiddha,Kamil Augsten,Silvia Auricchio,AD Auriol,Volker Andreas Austrup,Giuseppe Avolio,Konstantinos Axiotis,Georges Azuelos,Dominik Babal,Henri Bachacou,Konstantinos Bachas,Alexander Bachiu,F Backman,Anthony Badea,Paolo Bagnaia,Marzieh Bahmani,AJ Bailey,VR Bailey,JT Baines,Luke Baines,Christos Bakalis,OK Baker,Evelin Bakos,D Bakshi Gupta,Veena Balakrishnan,Rahul Balasubramanian
Journal
Journal of High Energy Physics
Published Date
2024/1
Differential cross-sections are measured for the production of four charged leptons in association with two jets. These measurements are sensitive to final states in which the jets are produced via the strong interaction as well as to the purely-electroweak vector boson scattering process. The analysis is performed using proton-proton collision data collected by ATLAS at= 13 TeV and with an integrated luminosity of 140 fb− 1. The data are corrected for the effects of detector inefficiency and resolution and are compared to state-of-the-art Monte Carlo event generator predictions. The differential cross-sections are used to search for anomalous weak-boson self-interactions that are induced by dimension-six and dimension-eight operators in Standard Model effective field theory.
arXiv : Search for low-mass resonances decaying into two jets and produced in association with a photon or a jet at TeV with the ATLAS detector
Authors
Georges Aad,Alexander Kupco,Jay Chan,Kuo Ma,Miguel Angel Principe Martin,Pierre Antoine Delsart,Joey Huston,Yufeng Wang,Karl Jakobs,Ana Maria Rodriguez Vera,Savanna Shaw,Christian Ohm,Marina Cobal,Donal Joseph Mclaughlin,Gen Tateno,Sertac Ozturk,Xi Wang,Bruna Pascual,Jaroslava Schovancova,Ahmed Bassalat,Marjorie Shapiro,Grigore Tarna,Harry Simpson,Ketevi Adikle Assamagan,Maria Carnesale,Sinan Kuday,Maximiliano Sioli,Xiao Yang,Maximilian Emanuel Goblirsch-Kolb,Nello Bruscino,Adrian Alvarez Fernandez,Rahul Balasubramanian,Sarah Marie Demers Konezny,Fernando Monticelli,Andrei Snesarev,Wasikul Islam,Ying Wun Yvonne Ng,Osamu Jinnouchi,William Keaton Balunas,Thomas Michael Carter,Javier Alberto Aparisi Pozo,Benedict Martin Waugh,Javier Montejo Berlingen,Louie Dartmoor Corpe,David Miller,Anna Ivina,Paolo Mastrandrea,Ryan Peter Mckenzie,Laura Pintucci,Martin Spousta,Sergio Diez Cornell,Karel Cerny,Tristan Andrew Ruggeri,Federico Montereali,Hans Krueger,Asma Hadef,Michael Kwok Lam Chu,Bruce Donald Yabsley,Florent Bernon,Christian Weber,Daniela Bortoletto,Riccardo Longo,Stefan Tapprogge,Tatsuya Masubuchi,Dmitry Tsybyshev,Shenjian Chen,Juan Terron Cuadrado,Souad Batlamous,Tim Martin,Chiara Roda,Thi Ngoc Loan Truong,Mohamed Ouchrif,Tatiana Lyubushkina,Christian Grefe,Chen Jia,Mendes Jacques Da Costa,Antonio Manuel,Gianantonio Pezzullo,Laurynas Mince,Al Goshaw,Adam Edward Barton,Joni Pham,Zhijun Liang,Stefano Zambito,Sergey Karpov,Zahra Farazpay,Pavol Strizenec,Wainer Vandelli,Christopher Lester,Shuzhou Zhang,Biagio Di Micco,Yahya AR Khwaira,Mitch Norfolk,Giovanni Padovano,Philippe Schwemling,Marcel Vos,Evelin Meoni,Zackary Lee Alegria,Albert Kong,Julian Wollrath,Charlie Chen,Judith Hofer,Sreelakshmi Sindhu,Dan Andrei Ciubotaru,Nanni Darbo,Caterina Doglioni,Etienne Marie Fortin,Iacopo Vivarelli,George Iakovidis,Pawel Malecki,Jan Stark,Paul Gessinger-Befurt,Masahiro Kuze,Benjamin Henry Hooberman,Sonia Carra,Davide Costanzo,Michael James Fenton,Meghranjana Chatterjee,Kehang Bai,James William Howarth,Todd Brian Huffman,Geoffrey Norman Taylor,Alexander Undrus,Thorsten Kuhl,Giuliano Gustavino,Mateusz Dyndal,Luke Baines,Nils Julius Abicht,Ali Skaf,Paul Louis Tipton,Haider Abidi,Kathryn Grimm,Lisa Marie Baltes,Ian Brock,Maria Mironova,Andrey Kupich,Christopher Robyn Hayes,Jan Tuzlic Offermann,Seth Zenz,Serguei Kuleshov,Mike Strauss,Kai Zheng,Alexander Lory,Stefio Yosse Andrean,Alain Bellerive,Jiri Masik,Christoph Jagfeld,Edmund Xiang Lin Ting,Julie Kirk,Dominique Godin
Published Date
2024/3/13
The Standard Model of particle physics (SM) successfully describes a wide range of phenomena across many orders of magnitude of energy at colliders, astrophysical observatories, and other experiments [1]. Nevertheless it fails to account for many observed phenomena, such as the presence of dark matter (DM)[2–4] and the imbalance of matter over antimatter in the observable universe [5]. While there are a wide range of proposed models of physics beyond the SM (BSM) to explain these effects [6–17], this paper focuses on a search for a hadronically decaying resonance
Measurement of -channel production of single top quarks and antiquarks in collisions at 13 TeV using the full ATLAS Run 2 data sample
Authors
Georges Aad,Braden Keim Abbott,Kira Abeling,Nils Julius Abicht,Haider Abidi,Asmaa Aboulhorma,Halina Abramowicz,Henso Abreu,Yiming Abulaiti,Angel Abusleme,Bobby Samir Acharya,Claire Adam Bourdarios,Leszek Adamczyk,Lukas Adamek,Sagar Addepalli,Matt Addison,Jahred Adelman,Aytul Adiguzel,Tim Adye,Tony Affolder,Yoav Afik,Merve Nazlim Agaras,Jinky Agarwala,Anamika Aggarwal,Catalin Agheorghiesei,Ammara Ahmad,Faig Ahmadov,Waleed Syed Ahmed,Sudha Ahuja,Xiaocong Ai,Giulio Aielli,Arya Aikot,Malak Ait Tamlihat,Brahim Aitbenchikh,Iakov Aizenberg,Melike Akbiyik,Torsten Akesson,Andrei Akimov,Daiya Akiyama,Nilima Nilesh Akolkar,Konie Al Khoury,Gian Luigi Alberghi,Justin Albert,Pietro Albicocco,Guillaume Lucas Albouy,Sara Alderweireldt,Martin Aleksa,Igor Alexandrov,Calin Alexa,Theodoros Alexopoulos,Fabrizio Alfonsi,Malte Algren,Muhammad Alhroob,Babar Ali,Hanadi Ali,Shahzad Ali,Samuel William Alibocus,Malik Aliev,Gianluca Alimonti,Wael Alkakhi,Corentin Allaire,Benedict Allbrooke,Julia Frances Allen,Cristian Andres Allendes Flores,Philip Patrick Allport,Alberto Aloisio,Francisco Alonso,Cristiano Alpigiani,Manuel Alvarez Estevez,Adrian Alvarez Fernandez,Mario Alves Cardoso,Mariagrazia Alviggi,Mohamed Aly,Yara Do Amaral Coutinho,Alessandro Ambler,Christoph Amelung,Maximilian Amerl,Christoph Ames,Dante Amidei,Susana Patricia Amor dos Santos,Kieran Robert Amos,Viktor Ananiev,Christos Anastopoulos,Timothy Robert Andeen,Stefio Yosse Andrean,Attilio Andreazza,Stylianos Angelidakis,Aaron Angerami,Alexey Anisenkov,Alberto Annovi,Claire Antel,Matthew Thomas Anthony,Egor Antipov,Mario Antonelli,Fabio Anulli,Masato Aoki,Takumi Aoki,Javier Alberto Aparisi Pozo,Marco Aparo,Ludovica Aperio Bella,Christian Appelt,Aram Apyan,Nordin Aranzabal Barrio,Chiara Arcangeletti,Ayana Tamu Arce,Eloisa Arena,Jean-Francois Arguin,Spyros Argyropoulos,Jan-Hendrik Arling,Olivier Arnaez,Hannah Arnold,Giacomo Artoni,Haruka Asada,Kanae Asai,Shoji Asai,Nedaa Alexandra Asbah,Ketevi Adikle Assamagan,Robert Astalos,Rose Atashi,Ryan Justin Atkin,Markus Julian Atkinson,Hicham Atmani,Prachi Atmasiddha,Kamil Augsten,Silvia Auricchio,Adrien Auriol,Volker Andreas Austrup,Giuseppe Avolio,Konstantinos Axiotis,Georges Azuelos,Dominik Babal,Henri Bachacou,Konstantinos Bachas,Alexander Bachiu,Karl Filip Backman,Anthony Badea,Paolo Bagnaia,Marzieh Bahmani,Adam Bailey,Virginia Bailey,John Baines,Luke Baines,Christos Bakalis,Keith Baker,Evelin Bakos,Debottam Bakshi Gupta,Veena Balakrishnan,Rahul Balasubramanian,Evgenii Baldin,Petr Balek
Published Date
2024/3/19
The production of single top quarks and top antiquarks via the -channel exchange of a virtual boson is measured in proton-proton collisions at a centre-of-mass energy of 13 TeV at the LHC using of ATLAS data. The total cross-sections are determined to be and for top-quark and top-antiquark production, respectively. The combined cross-section is found to be and the cross-section ratio is . The predictions at next-to-next-to-leading-order in quantum chromodynamics are in good agreement with these measurements. The predicted value of using different sets of parton distribution functions is compared with the measured value, demonstrating the potential to further constrain the functions when using this result in global fits. The measured cross-sections are interpreted in an effective field theory approach, setting limits at the 95% confidence level on the strength of a four-quark operator and an operator coupling the third quark generation to the Higgs boson doublet: and . The constraint at the 95% confidence level is derived from the measured value of . In a more general approach, pairs of CKM matrix elements involving top quarks are simultaneously constrained, leading to confidence contours in the corresponding two-dimensional parameter spaces.
Measurement of the and cross-sections in pp collisions at TeV with the ATLAS detector
Authors
ATLAS Collaboration atlas. publications@ cern. ch,G Aad,B Abbott,K Abeling,NJ Abicht,SH Abidi,A Aboulhorma,H Abramowicz,H Abreu,Y Abulaiti,BS Acharya,C Adam Bourdarios,L Adamczyk,L Adamek,SV Addepalli,MJ Addison,J Adelman,A Adiguzel,T Adye,AA Affolder,Y Afik,MN Agaras,J Agarwala,A Aggarwal,C Agheorghiesei,A Ahmad,F Ahmadov,WS Ahmed,S Ahuja,X Ai,G Aielli,A Aikot,M Ait Tamlihat,B Aitbenchikh,I Aizenberg,M Akbiyik,TPA Åkesson,AV Akimov,D Akiyama,NN Akolkar,K Al Khoury,GL Alberghi,J Albert,P Albicocco,GL Albouy,S Alderweireldt,M Aleksa,IN Aleksandrov,C Alexa,T Alexopoulos,F Alfonsi,M Algren,M Alhroob,B Ali,HMJ Ali,S Ali,SW Alibocus,M Aliev,G Alimonti,W Alkakhi,C Allaire,BMM Allbrooke,JF Allen,CA Allendes Flores,PP Allport,A Aloisio,F Alonso,C Alpigiani,M Alvarez Estevez,A Alvarez Fernandez,M Alves Cardoso,MG Alviggi,M Aly,Y Amaral Coutinho,A Ambler,C Amelung,M Amerl,CG Ames,D Amidei,SP Amor Dos Santos,KR Amos,V Ananiev,C Anastopoulos,T Andeen,JK Anders,SY Andrean,A Andreazza,S Angelidakis,A Angerami,AV Anisenkov,A Annovi,C Antel,MT Anthony,E Antipov,M Antonelli,F Anulli,M Aoki,T Aoki,JA Aparisi Pozo,MA Aparo,L Aperio Bella,C Appelt,A Apyan,N Aranzabal,C Arcangeletti,ATH Arce,E Arena,J-F Arguin,S Argyropoulos,J-H Arling,O Arnaez,H Arnold,G Artoni,H Asada,K Asai,S Asai,NA Asbah,J Assahsah,K Assamagan,R Astalos,S Atashi,RJ Atkin,M Atkinson,H Atmani,PA Atmasiddha,K Augsten,S Auricchio,AD Auriol,VA Austrup,G Avolio,K Axiotis,G Azuelos,D Babal,H Bachacou,K Bachas,A Bachiu,F Backman,A Badea,P Bagnaia,M Bahmani,AJ Bailey,VR Bailey,JT Baines,L Baines,C Bakalis,OK Baker,E Bakos,D Bakshi Gupta,V Balakrishnan,R Balasubramanian
Journal
The European Physical Journal C
Published Date
2024/1/24
The inclusive Higgs boson production cross-section is measured in the di-photon and the decay channels using 31.4 and 29.0 fb of pp collision data respectively, collected with the ATLAS detector at a centre-of-mass energy of . To reduce the model dependence, the measurement in each channel is restricted to a particle-level phase space that closely matches the channel’s detector-level kinematic selection, and it is corrected for detector effects. These measured fiducial cross-sections are fb, and fb, in agreement with the corresponding Standard Model predictions of fb and fb. Assuming Standard Model acceptances and branching fractions for the two channels, the fiducial measurements are extrapolated to the full phase space yielding total cross-sections of pb and pb at 13.6 from the di-photon and …
Measurement of the total and differential cross-sections of production in collisions at TeV with the ATLAS detector
Authors
Georges Aad,Braden Keim Abbott,Kira Abeling,Nils Julius Abicht,Haider Abidi,Asmaa Aboulhorma,Halina Abramowicz,Henso Abreu,Yiming Abulaiti,Angel Abusleme,Bobby Samir Acharya,Claire Adam Bourdarios,Leszek Adamczyk,Lukas Adamek,Sagar Addepalli,Matt Addison,Jahred Adelman,Aytul Adiguzel,Tim Adye,Tony Affolder,Yoav Afik,Merve Nazlim Agaras,Jinky Agarwala,Anamika Aggarwal,Catalin Agheorghiesei,Ammara Ahmad,Faig Ahmadov,Waleed Syed Ahmed,Sudha Ahuja,Xiaocong Ai,Giulio Aielli,Malak Ait Tamlihat,Brahim Aitbenchikh,Iakov Aizenberg,Melike Akbiyik,Torsten Akesson,Andrei Akimov,Daiya Akiyama,Nilima Nilesh Akolkar,Konie Al Khoury,Gian Luigi Alberghi,Justin Albert,Pietro Albicocco,Guillaume Lucas Albouy,Sara Alderweireldt,Martin Aleksa,Igor Alexandrov,Calin Alexa,Theodoros Alexopoulos,Alice Alfonsi,Fabrizio Alfonsi,Malte Algren,Muhammad Alhroob,Babar Ali,Hanadi Ali,Shahzad Ali,Samuel William Alibocus,Malik Aliev,Gianluca Alimonti,Wael Alkakhi,Corentin Allaire,Benedict Allbrooke,Julia Frances Allen,Cristian Andres Allendes Flores,Philip Patrick Allport,Alberto Aloisio,Francisco Alonso,Cristiano Alpigiani,Manuel Alvarez Estevez,Adrian Alvarez Fernandez,Mariagrazia Alviggi,Mohamed Aly,Yara Do Amaral Coutinho,Alessandro Ambler,Christoph Amelung,Maximilian Amerl,Christoph Ames,Dante Amidei,Susana Patricia Amor dos Santos,Kieran Robert Amos,Viktor Ananiev,Christos Anastopoulos,Timothy Robert Andeen,John Kenneth Anders,Stefio Yosse Andrean,Attilio Andreazza,Stylianos Angelidakis,Aaron Angerami,Alexey Anisenkov,Alberto Annovi,Claire Antel,Matthew Thomas Anthony,Egor Antipov,Mario Antonelli,Daniel Joseph Antrim,Fabio Anulli,Masato Aoki,Takumi Aoki,Javier Alberto Aparisi Pozo,Marco Aparo,Ludovica Aperio Bella,Christian Appelt,Aram Apyan,Nordin Aranzabal Barrio,Chiara Arcangeletti,Ayana Tamu Arce,Eloisa Arena,Jean-Francois Arguin,Spyros Argyropoulos,Jan-Hendrik Arling,Aaron James Armbruster,Olivier Arnaez,Hannah Arnold,Zulit Paola Arrubarrena Tame,Giacomo Artoni,Haruka Asada,Kanae Asai,Shoji Asai,Nedaa Alexandra Asbah,Ketevi Adikle Assamagan,Robert Astalos,Rose Atashi,Ryan Justin Atkin,Markus Julian Atkinson,Naim Bora Atlay,Hicham Atmani,Prachi Atmasiddha,Kamil Augsten,Silvia Auricchio,Adrien Auriol,Volker Andreas Austrup,Giuseppe Avolio,Konstantinos Axiotis,Georges Azuelos,Dominik Babal,Henri Bachacou,Konstantinos Bachas,Alexander Bachiu,Karl Filip Backman,Anthony Badea,Paolo Bagnaia,Marzieh Bahmani,Adam Bailey,Virginia Bailey,John Baines,Luke Baines,Christos Bakalis,Keith Baker,Evelin Bakos,Debottam Bakshi Gupta
Published Date
2024/1/11
Measurements of inclusive and differential production cross-sections of a top-quark-top-antiquark pair in association with a $W$ boson ($t\bar{t}W$) are presented. They are performed by targeting final states with two same-sign or three isolated leptons (electrons or muons) and are based on $\sqrt{s}=13$ TeV proton-proton collision data with an integrated luminosity of 140 fb$^{-1}$, recorded from 2015 to 2018 with the ATLAS detector at the Large Hadron Collider. The inclusive $t\bar{t}W$ production cross-section is measured to be $880 \pm 80$ fb, compared to a reference theoretical prediction of $745 \pm 50\,\textrm{(scale)} \pm 13\,\textrm{(2-loop approx.)} \pm 19\,\textrm{(PDF,} \alpha_{\textrm{S}})$ fb. Differential cross-section measurements characterise this process in detail for the first time. Several particle-level observables are compared with a variety of theoretical predictions, which generally agree well with the normalised differential cross-section results. Additionally, the relative charge asymmetry of $t\bar{t}W^{+}$ and $t\bar{t}W^{-}$ is measured inclusively to be ${A_{\mathrm{C}}^{\mathrm{rel}}} = 0.33 \pm 0.05$, in very good agreement with the theoretical prediction of $0.322 \pm 0.003\,\mathrm{(scale)} \pm 0.007\,\mathrm{(PDF)}$, as well as differentially.
Measurements of the production cross-section for a boson in association with - or -jets in proton-proton collisions at TeV with the ATLAS detector
Authors
Georges Aad,Erlend Aakvaag,Braden Keim Abbott,Sara Abdelhameed,Kira Abeling,Nils Julius Abicht,Haider Abidi,Mohammed Aboelela,Asmaa Aboulhorma,Halina Abramowicz,Henso Abreu,Yiming Abulaiti,Bobby Samir Acharya,Anke Ackermann,Claire Adam Bourdarios,Leszek Adamczyk,Sagar Addepalli,Matt Addison,Jahred Adelman,Aytul Adiguzel,Tim Adye,Tony Affolder,Yoav Afik,Merve Nazlim Agaras,Jinky Agarwala,Anamika Aggarwal,Catalin Agheorghiesei,Ammara Ahmad,Faig Ahmadov,Waleed Syed Ahmed,Sudha Ahuja,Xiaocong Ai,Giulio Aielli,Arya Aikot,Malak Ait Tamlihat,Brahim Aitbenchikh,Melike Akbiyik,Torsten Akesson,Andrei Akimov,Daiya Akiyama,Nilima Nilesh Akolkar,Sina Aktas,Konie Al Khoury,Gian Luigi Alberghi,Justin Albert,Pietro Albicocco,Guillaume Lucas Albouy,Sara Alderweireldt,Zackary Lee Alegria,Martin Aleksa,Igor Alexandrov,Calin Alexa,Theodoros Alexopoulos,Fabrizio Alfonsi,Malte Algren,Muhammad Alhroob,Babar Ali,Hanadi Ali,Shahzad Ali,Samuel William Alibocus,Malik Aliev,Gianluca Alimonti,Wael Alkakhi,Corentin Allaire,Benedict Allbrooke,Julia Frances Allen,Cristian Andres Allendes Flores,Philip Patrick Allport,Alberto Aloisio,Francisco Alonso,Cristiano Alpigiani,Zainab Mohammad K Alsolami,Manuel Alvarez Estevez,Adrian Alvarez Fernandez,Mario Alves Cardoso,Mariagrazia Alviggi,Mohamed Aly,Yara Do Amaral Coutinho,Alessandro Ambler,Christoph Amelung,Maximilian Amerl,Christoph Ames,Dante Amidei,Kyle Amirie,Susana Patricia Amor dos Santos,Kieran Robert Amos,Shiwen An,Viktor Ananiev,Christos Anastopoulos,Timothy Robert Andeen,Stefio Yosse Andrean,Attilio Andreazza,Stylianos Angelidakis,Aaron Angerami,Alexey Anisenkov,Alberto Annovi,Claire Antel,Egor Antipov,Mario Antonelli,Fabio Anulli,Masato Aoki,Takumi Aoki,Marco Aparo,Ludovica Aperio Bella,Christian Appelt,Aram Apyan,Sergio Javier Arbiol Val,Chiara Arcangeletti,Ayana Tamu Arce,Eloisa Arena,Jean-Francois Arguin,Spyros Argyropoulos,Jan-Hendrik Arling,Olivier Arnaez,Hannah Arnold,Giacomo Artoni,Haruka Asada,Kanae Asai,Shoji Asai,Nedaa Alexandra Asbah,Ketevi Adikle Assamagan,Robert Astalos,Karl Sten Vilhelm Astrand,Rose Atashi,Ryan Justin Atkin,Markus Julian Atkinson,Hicham Atmani,Prachi Atmasiddha,Kamil Augsten,Silvia Auricchio,Adrien Auriol,Volker Andreas Austrup,Giuseppe Avolio,Konstantinos Axiotis,Georges Azuelos,Dominik Babal,Henri Bachacou,Konstantinos Bachas,Alexander Bachiu,Karl Filip Backman,Anthony Badea,Tamas Marton Baer,Paolo Bagnaia,Marzieh Bahmani,Daniel Bahner,Kehang Bai,John Baines,Luke Baines,Keith Baker,Evelin Bakos
Journal
Journal of high energy physics
Published Date
2024/3/26
This paper presents a measurement of the production cross-section of a boson in association with - or -jets, in proton-proton collisions at TeV with the ATLAS experiment at the Large Hadron Collider using data corresponding to an integrated luminosity of 140 fb. Inclusive and differential cross-sections are measured for events containing a boson decaying into electrons or muons and produced in association with at least one -jet, at least one -jet, or at least two -jets with transverse momentum GeV and rapidity . Predictions from several Monte Carlo generators based on next-to-leading-order matrix elements interfaced with a parton-shower simulation, with different choices of flavour schemes for initial-state partons, are compared with the measured cross-sections. The results are also compared with novel predictions, based on infrared and collinear safe jet flavour dressing algorithms. Selected -jet observables, optimized for sensitivity to intrinsic-charm, are compared with benchmark models with different intrinsic-charm fractions.
Search for low-mass resonances decaying into two jets and produced in association with a photon or a jet at TeV with the ATLAS detector
Authors
ATLAS collaboration
Journal
arXiv preprint arXiv:1901.10917
Published Date
2019/1/30
A search is performed for localised excesses in dijet mass distributions of low-dijet-mass events produced in association with a high transverse energy photon. The search uses up to 79.8 fb of LHC proton-proton collisions collected by the ATLAS experiment at a centre-of-mass energy of 13 TeV during 2015-2017. Two variants are presented: one which makes no jet flavour requirements and one which requires both jets to be tagged as -jets. The observed mass distributions are consistent with multi-jet processes in the Standard Model. The data are used to set upper limits on the production cross-section for a benchmark model and, separately, on generic Gaussian-shape contributions to the mass distributions, extending the current ATLAS constraints on dijet resonances to the mass range between 225 and 1100 GeV.
Operation and performance of the ATLAS tile calorimeter in LHC Run 2
Authors
Georges Aad,Braden Keim Abbott,Jalal Abdallah,Kira Abeling,Nils Julius Abicht,Haider Abidi,Asmaa Aboulhorma,Halina Abramowicz,Henso Abreu,Yiming Abulaiti,Bobby Samir Acharya,Claire Adam Bourdarios,Leszek Adamczyk,Sagar Addepalli,Matt Addison,Jahred Adelman,Aytul Adiguzel,Tim Adye,Tony Affolder,Yoav Afik,Merve Nazlim Agaras,Jinky Agarwala,Anamika Aggarwal,Catalin Agheorghiesei,Ammara Ahmad,Faig Ahmadov,Waleed Syed Ahmed,Sudha Ahuja,Xiaocong Ai,Giulio Aielli,Arya Aikot,Malak Ait Tamlihat,Brahim Aitbenchikh,Iakov Aizenberg,Melike Akbiyik,Torsten Akesson,Andrei Akimov,Daiya Akiyama,Nilima Nilesh Akolkar,Sina Aktas,Konie Al Khoury,Gian Luigi Alberghi,Justin Albert,Pietro Albicocco,Guillaume Lucas Albouy,Sara Alderweireldt,Zackary Lee Alegria,Martin Aleksa,Igor Alexandrov,Calin Alexa,Theodoros Alexopoulos,Fabrizio Alfonsi,Malte Algren,Muhammad Alhroob,Babar Ali,Hanadi Ali,Shahzad Ali,Samuel William Alibocus,Malik Aliev,Gianluca Alimonti,Wael Alkakhi,Corentin Allaire,Benedict Allbrooke,Julia Frances Allen,Cristian Andres Allendes Flores,Philip Patrick Allport,Alberto Aloisio,Francisco Alonso,Cristiano Alpigiani,Manuel Alvarez Estevez,Adrian Alvarez Fernandez,Mario Alves Cardoso,Mariagrazia Alviggi,Mohamed Aly,Yara Do Amaral Coutinho,Alessandro Ambler,Christoph Amelung,Maximilian Amerl,Christoph Ames,Dante Amidei,Susana Patricia Amor dos Santos,Kieran Robert Amos,Viktor Ananiev,Christos Anastopoulos,Timothy Robert Andeen,John Kenneth Anders,Kelby Anderson,Stefio Yosse Andrean,Attilio Andreazza,Stylianos Angelidakis,Aaron Angerami,Alexey Anisenkov,Alberto Annovi,Claire Antel,Matthew Thomas Anthony,Egor Antipov,Mario Antonelli,Fabio Anulli,Masato Aoki,Takumi Aoki,Javier Alberto Aparisi Pozo,Marco Aparo,Ludovica Aperio Bella,Christian Appelt,Aram Apyan,Nordin Aranzabal Barrio,Sergio Javier Arbiol Val,Chiara Arcangeletti,Ayana Tamu Arce,Eloisa Arena,Jean-Francois Arguin,Spyros Argyropoulos,Jan-Hendrik Arling,Olivier Arnaez,Hannah Arnold,Giacomo Artoni,Haruka Asada,Kanae Asai,Shoji Asai,Nedaa Alexandra Asbah,Ketevi Adikle Assamagan,Robert Astalos,Rose Atashi,Ryan Justin Atkin,Markus Julian Atkinson,Hicham Atmani,Prachi Atmasiddha,Kamil Augsten,Silvia Auricchio,Adrien Auriol,Volker Andreas Austrup,Giuseppe Avolio,Konstantinos Axiotis,Georges Azuelos,Dominik Babal,Henri Bachacou,Konstantinos Bachas,Alexander Bachiu,Karl Filip Backman,Anthony Badea,Tamas Marton Baer,Paolo Bagnaia,Marzieh Bahmani,Daniel Bahner,Adam Bailey,Virginia Bailey,John Baines,Luke Baines,Keith Baker,Evelin Bakos
Published Date
2024/1/30
The ATLAS tile calorimeter (TileCal) is the hadronic sampling calorimeter covering the central region of the ATLAS detector at the Large Hadron Collider (LHC). This paper gives an overview of the calorimeter's operation and performance during the years 2015-2018 (Run 2). In this period, ATLAS collected proton-proton collision data at a centre-of-mass energy of 13 TeV and the TileCal was efficient for data-taking. The signal reconstruction, the calibration procedures, and the detector operational status are presented. The performance of two ATLAS trigger systems making use of TileCal information, the minimum-bias trigger scintillators and the tile muon trigger, is discussed. Studies of radiation effects allow the degradation of the output signals at the end of the LHC and HL-LHC operations to be estimated. Finally, the TileCal response to isolated muons, hadrons and jets from proton-proton collisions is presented. The energy and time calibration methods performed excellently, resulting in good stability and uniformity of the calorimeter response during Run 2. The setting of the energy scale was performed with an uncertainty of . The results demonstrate that the performance is in accordance with specifications defined in the Technical Design Report.
Measurement and interpretation of same-sign W boson pair production in association with two jets in pp collisions at s = 13 TeV with the ATLAS detector
Authors
G Aad,B Abbott,K Abeling,NJ Abicht,SH Abidi,A Aboulhorma,H Abramowicz,H Abreu,Y Abulaiti,AC Abusleme Hoffman,BS Acharya,C Adam Bourdarios,L Adamczyk,L Adamek,SV Addepalli,MJ Addison,J Adelman,A Adiguzel,T Adye,AA Affolder,Y Afik,MN Agaras,J Agarwala,A Aggarwal,C Agheorghiesei,A Ahmad,F Ahmadov,WS Ahmed,S Ahuja,X Ai,G Aielli,A Aikot,M Ait Tamlihat,B Aitbenchikh,I Aizenberg,M Akbiyik,TPA Åkesson,AV Akimov,D Akiyama,NN Akolkar,K Al Khoury,GL Alberghi,J Albert,P Albicocco,GL Albouy,S Alderweireldt,M Aleksa,IN Aleksandrov,C Alexa,T Alexopoulos,F Alfonsi,M Algren,M Alhroob,B Ali,HMJ Ali,S Ali,SW Alibocus,M Aliev,G Alimonti,W Alkakhi,C Allaire,BMM Allbrooke,JF Allen,CA Allendes Flores,PP Allport,A Aloisio,F Alonso,C Alpigiani,M Alvarez Estevez,A Alvarez Fernandez,M Alves Cardoso,MG Alviggi,M Aly,Y Amaral Coutinho,A Ambler,C Amelung,M Amerl,CG Ames,D Amidei,SP Amor Dos Santos,KR Amos,V Ananiev,C Anastopoulos,T Andeen,JK Anders,SY Andrean,A Andreazza,S Angelidakis,A Angerami,AV Anisenkov,A Annovi,C Antel,MT Anthony,E Antipov,M Antonelli,F Anulli,M Aoki,T Aoki,JA Aparisi Pozo,MA Aparo,L Aperio Bella,C Appelt,A Apyan,N Aranzabal,C Arcangeletti,ATH Arce,E Arena,JF Arguin,S Argyropoulos,J-H Arling,O Arnaez,H Arnold,G Artoni,H Asada,K Asai,S Asai,NA Asbah,K Assamagan,R Astalos,S Atashi,RJ Atkin,M Atkinson,H Atmani,PA Atmasiddha,K Augsten,S Auricchio,AD Auriol,VA Austrup,G Avolio,K Axiotis,G Azuelos,D Babal,H Bachacou,K Bachas,A Bachiu,F Backman,A Badea,P Bagnaia,M Bahmani,AJ Bailey,VR Bailey,JT Baines,L Baines,C Bakalis,OK Baker,E Bakos,D Bakshi Gupta,V Balakrishnan,R Balasubramanian,EM Baldin
Published Date
2024/4/4
This paper presents the measurement of fiducial and differential cross sections for both the inclusive and electroweak production of a same-sign W-boson pair in association with two jets (W±W±jj) using 139 fb− 1 of proton-proton collision data recorded at a centre-of-mass energy of s = 13 TeV by the ATLAS detector at the Large Hadron Collider. The analysis is performed by selecting two same-charge leptons, electron or muon, and at least two jets with large invariant mass and a large rapidity difference. The measured fiducial cross sections for electroweak and inclusive W±W±jj production are 2.92±0.22 (stat.)±0.19 (syst.) fb and 3.38±0.22 (stat.)±0.19 (syst.) fb, respectively, in agreement with Standard Model predictions. The measurements are used to constrain anomalous quartic gauge couplings by extracting 95% confidence level intervals on dimension-8 operators. A search for doubly charged Higgs bosons H±±that are produced in vector-boson fusion processes and decay into a same-sign W boson pair is performed. The largest deviation from the Standard Model occurs for an H±±mass near 450 GeV, with a global significance of 2.5 standard deviations.
Search for the Zγ decay mode of new high-mass resonances in pp collisions at s= 13 TeV with the ATLAS detector
Authors
Georges Aad,B Abbott,Kira Abeling,Nils Julius Abicht,SH Abidi,Asmaa Aboulhorma,Halina Abramowicz,Henso Abreu,Yiming Abulaiti,Bobby Samir Acharya,C Adam Bourdarios,Leszek Adamczyk,Lukas Adamek,SV Addepalli,MJ Addison,Jahred Adelman,Aytul Adiguzel,Tim Adye,AA Affolder,Yoav Afik,Merve Nazlim Agaras,Jinky Agarwala,Anamika Aggarwal,Catalin Agheorghiesei,Ammara Ahmad,Faig Ahmadov,Waleed Syed Ahmed,Sudha Ahuja,Xiaocong Ai,Giulio Aielli,Arya Aikot,M Ait Tamlihat,Brahim Aitbenchikh,Iakov Aizenberg,Melike Akbiyik,TPA Åkesson,AV Akimov,Daiya Akiyama,Nilima Nilesh Akolkar,Konie Al Khoury,Gian Luigi Alberghi,Justin Albert,Pietro Albicocco,Guillaume Lucas Albouy,Sara Alderweireldt,Martin Aleksa,IN Aleksandrov,Calin Alexa,Theodoros Alexopoulos,Fabrizio Alfonsi,Malte Algren,Muhammad Alhroob,Babar Ali,HMJ Ali,Shahzad Ali,Samuel William Alibocus,Malik Aliev,Gianluca Alimonti,Wael Alkakhi,Corentin Allaire,BMM Allbrooke,Julia Frances Allen,CA Allendes Flores,Philip Patrick Allport,Alberto Aloisio,Francisco Alonso,Cristiano Alpigiani,M Alvarez Estevez,A Alvarez Fernandez,M Alves Cardoso,MG Alviggi,Mohamed Aly,Y Amaral Coutinho,Alessandro Ambler,Christoph Amelung,Maximilian Amerl,CG Ames,Dante Amidei,SP Amor Dos Santos,Kieran Robert Amos,Viktor Ananiev,Christos Anastopoulos,T Andeen,John Kenneth Anders,Stefio Yosse Andrean,Attilio Andreazza,Stylianos Angelidakis,Aaron Angerami,AV Anisenkov,Alberto Annovi,Claire Antel,Matthew Thomas Anthony,Egor Antipov,Mario Antonelli,Fabio Anulli,Masato Aoki,Takumi Aoki,JA Aparisi Pozo,MA Aparo,L Aperio Bella,Christian Appelt,Aram Apyan,N Aranzabal,Chiara Arcangeletti,ATH Arce,Eloisa Arena,Jean-Francois Arguin,Spyros Argyropoulos,J-H Arling,Olivier Arnaez,Hannah Arnold,Giacomo Artoni,Haruka Asada,Kanae Asai,Shoji Asai,Nedaa Alexandra Asbah,Jihad Assahsah,K Assamagan,Robert Astalos,S Atashi,Ryan Justin Atkin,M Atkinson,Hicham Atmani,PA Atmasiddha,Kamil Augsten,Silvia Auricchio,AD Auriol,Volker Andreas Austrup,Giuseppe Avolio,Konstantinos Axiotis,Georges Azuelos,Dominik Babal,Henri Bachacou,Konstantinos Bachas,Alexander Bachiu,F Backman,Anthony Badea,Paolo Bagnaia,Marzieh Bahmani,AJ Bailey,VR Bailey,JT Baines,Luke Baines,Christos Bakalis,OK Baker,Evelin Bakos,D Bakshi Gupta,Veena Balakrishnan,Rahul Balasubramanian,EM Baldin
Journal
Physics Letters B
Published Date
2024/1/1
This letter presents a search for narrow, high-mass resonances in the Zγ final state with the Z boson decaying into a pair of electrons or muons. The s= 13 TeV pp collision data were recorded by the ATLAS detector at the CERN Large Hadron Collider and have an integrated luminosity of 140 fb− 1. The data are found to be in agreement with the Standard Model background expectation. Upper limits are set on the resonance production cross section times the decay branching ratio into Zγ. For spin-0 resonances produced via gluon–gluon fusion, the observed limits at 95% confidence level vary between 65.5 fb and 0.6 fb, while for spin-2 resonances produced via gluon–gluon fusion (or quark–antiquark initial states) limits vary between 77.4 (76.1) fb and 0.6 (0.5) fb, for the mass range from 220 GeV to 3400 GeV.
Search for electroweak production of supersymmetric particles in final states with two -leptons in = 13 TeV collisions with the ATLAS detector
Authors
Georges Aad,Braden Keim Abbott,Kira Abeling,Nils Julius Abicht,Haider Abidi,Asmaa Aboulhorma,Halina Abramowicz,Henso Abreu,Yiming Abulaiti,Bobby Samir Acharya,Claire Adam Bourdarios,Leszek Adamczyk,Lukas Adamek,Sagar Addepalli,Matt Addison,Jahred Adelman,Aytul Adiguzel,Tim Adye,Tony Affolder,Yoav Afik,Merve Nazlim Agaras,Jinky Agarwala,Anamika Aggarwal,Catalin Agheorghiesei,Ammara Ahmad,Faig Ahmadov,Waleed Syed Ahmed,Sudha Ahuja,Xiaocong Ai,Giulio Aielli,Arya Aikot,Malak Ait Tamlihat,Brahim Aitbenchikh,Iakov Aizenberg,Melike Akbiyik,Torsten Akesson,Andrei Akimov,Daiya Akiyama,Nilima Nilesh Akolkar,Konie Al Khoury,Gian Luigi Alberghi,Justin Albert,Pietro Albicocco,Guillaume Lucas Albouy,Sara Alderweireldt,Martin Aleksa,Igor Alexandrov,Calin Alexa,Theodoros Alexopoulos,Fabrizio Alfonsi,Malte Algren,Muhammad Alhroob,Babar Ali,Hanadi Ali,Shahzad Ali,Samuel William Alibocus,Malik Aliev,Gianluca Alimonti,Wael Alkakhi,Corentin Allaire,Benedict Allbrooke,Julia Frances Allen,Cristian Andres Allendes Flores,Philip Patrick Allport,Alberto Aloisio,Francisco Alonso,Cristiano Alpigiani,Manuel Alvarez Estevez,Adrian Alvarez Fernandez,Mario Alves Cardoso,Mariagrazia Alviggi,Mohamed Aly,Yara Do Amaral Coutinho,Alessandro Ambler,Christoph Amelung,Maximilian Amerl,Christoph Ames,Dante Amidei,Susana Patricia Amor dos Santos,Kieran Robert Amos,Viktor Ananiev,Christos Anastopoulos,Timothy Robert Andeen,John Kenneth Anders,Stefio Yosse Andrean,Attilio Andreazza,Stylianos Angelidakis,Aaron Angerami,Alexey Anisenkov,Alberto Annovi,Claire Antel,Matthew Thomas Anthony,Egor Antipov,Mario Antonelli,Fabio Anulli,Masato Aoki,Takumi Aoki,Javier Alberto Aparisi Pozo,Marco Aparo,Ludovica Aperio Bella,Christian Appelt,Aram Apyan,Nordin Aranzabal Barrio,Chiara Arcangeletti,Ayana Tamu Arce,Eloisa Arena,Jean-Francois Arguin,Spyros Argyropoulos,Jan-Hendrik Arling,Olivier Arnaez,Hannah Arnold,Giacomo Artoni,Haruka Asada,Kanae Asai,Shoji Asai,Nedaa Alexandra Asbah,Ketevi Adikle Assamagan,Robert Astalos,Rose Atashi,Ryan Justin Atkin,Markus Julian Atkinson,Hicham Atmani,Prachi Atmasiddha,Kamil Augsten,Silvia Auricchio,Adrien Auriol,Volker Andreas Austrup,Giuseppe Avolio,Konstantinos Axiotis,Georges Azuelos,Dominik Babal,Henri Bachacou,Konstantinos Bachas,Alexander Bachiu,Karl Filip Backman,Anthony Badea,Paolo Bagnaia,Marzieh Bahmani,Adam Bailey,Virginia Bailey,John Baines,Luke Baines,Christos Bakalis,Keith Baker,Evelin Bakos,Debottam Bakshi Gupta,Veena Balakrishnan,Rahul Balasubramanian,Evgenii Baldin,Petr Balek
Published Date
2024/2/7
Three searches for the direct production of staus or charginos and neutralinos in final states with at least two hadronically decaying -leptons are presented. For chargino and neutralino production, decays via intermediate staus or and bosons are considered. The analysis uses a dataset of collisions corresponding to an integrated luminosity of 139 , recorded with the ATLAS detector at the Large Hadron Collider at a centre-of-mass energy of 13 TeV. No significant deviation from the expected Standard Model background is observed and SUSY particle mass limits at 95% confidence level are obtained in simplified models. For direct production of , chargino masses are excluded up to 970 GeV, while and masses up to 1160 GeV (330 GeV) are excluded for / production with subsequent decays via staus ( and bosons). Stau masses up to 500 GeV are excluded for mass degenerate scenarios and up to 425 GeV for -only scenarios. Sensitivity to -only scenarios from the ATLAS experiment is presented here for the first time, with masses excluded up to 350 GeV.
Search for the decay of the Higgs boson to a Z boson and a light pseudoscalar particle decaying to two photons
Authors
Georges Aad,B Abbott,Kira Abeling,Nils Julius Abicht,SH Abidi,Asmaa Aboulhorma,Halina Abramowicz,Henso Abreu,Yiming Abulaiti,Bobby Samir Acharya,C Adam Bourdarios,Leszek Adamczyk,SV Addepalli,MJ Addison,Jahred Adelman,Aytul Adiguzel,Tim Adye,AA Affolder,Yoav Afik,Merve Nazlim Agaras,Jinky Agarwala,Anamika Aggarwal,Catalin Agheorghiesei,Ammara Ahmad,Faig Ahmadov,Waleed Syed Ahmed,Sudha Ahuja,Xiaocong Ai,Giulio Aielli,Arya Aikot,M Ait Tamlihat,Brahim Aitbenchikh,Iakov Aizenberg,Melike Akbiyik,TPA Åkesson,AV Akimov,Daiya Akiyama,Nilima Nilesh Akolkar,Konie Al Khoury,Gian Luigi Alberghi,Justin Albert,Pietro Albicocco,Guillaume Lucas Albouy,Sara Alderweireldt,Martin Aleksa,IN Aleksandrov,Calin Alexa,Theodoros Alexopoulos,Fabrizio Alfonsi,Malte Algren,Muhammad Alhroob,Babar Ali,HMJ Ali,Shahzad Ali,Samuel William Alibocus,Malik Aliev,Gianluca Alimonti,Wael Alkakhi,Corentin Allaire,BMM Allbrooke,Julia Frances Allen,CA Allendes Flores,Philip Patrick Allport,Alberto Aloisio,Francisco Alonso,Cristiano Alpigiani,M Alvarez Estevez,A Alvarez Fernandez,M Alves Cardoso,MG Alviggi,Mohamed Aly,Y Amaral Coutinho,Alessandro Ambler,Christoph Amelung,Maximilian Amerl,CG Ames,Dante Amidei,SP Amor Dos Santos,Kieran Robert Amos,Viktor Ananiev,Christos Anastopoulos,T Andeen,John Kenneth Anders,Stefio Yosse Andrean,Attilio Andreazza,Stylianos Angelidakis,Aaron Angerami,AV Anisenkov,Alberto Annovi,Claire Antel,Matthew Thomas Anthony,Egor Antipov,Mario Antonelli,Fabio Anulli,Masato Aoki,Takumi Aoki,JA Aparisi Pozo,MA Aparo,L Aperio Bella,Christian Appelt,Aram Apyan,N Aranzabal,SJ Arbiol Val,Chiara Arcangeletti,ATH Arce,Eloisa Arena,Jean-Francois Arguin,Spyros Argyropoulos,J-H Arling,Olivier Arnaez,Hannah Arnold,Giacomo Artoni,Haruka Asada,Kanae Asai,Shoji Asai,Nedaa Alexandra Asbah,K Assamagan,R Astalos,S Atashi,RJ Atkin,M Atkinson,H Atmani,PA Atmasiddha,K Augsten,S Auricchio,AD Auriol,VA Austrup,G Avolio,K Axiotis,G Azuelos,D Babal,H Bachacou,K Bachas,A Bachiu,F Backman,A Badea,P Bagnaia,M Bahmani,AJ Bailey,VR Bailey,JT Baines,L Baines,OK Baker,E Bakos,D Bakshi Gupta,V Balakrishnan,R Balasubramanian,EM Baldin,P Balek,E Ballabene
Journal
Physics Letters B
Published Date
2024/2/21
A search for the decay of the Higgs boson to a Z boson and a light, pseudoscalar particle, a, decaying respectively to two leptons and to two photons is reported. The search uses the full LHC Run 2 proton–proton collision data at s= 13 TeV, corresponding to 139 fb− 1 collected by the ATLAS detector. This is one of the first searches for this specific decay mode of the Higgs boson, and it probes unexplored parameter space in models with axion-like particles (ALPs) and extended scalar sectors. The mass of the a particle is assumed to be in the range 0.1–33 GeV. The data are analysed in two categories: a merged category where the photons from the a decay are reconstructed in the ATLAS calorimeter as a single cluster, and a resolved category in which two separate photons are detected. The main background processes are from Standard Model Z boson production in association with photons or jets. The data are in …
arXiv : Search for a new gauge boson via the process in collisions at TeV with the ATLAS detector
Authors
Georges Aad,Alexander Kupco,Jay Chan,Kuo Ma,Miguel Angel Principe Martin,Pierre Antoine Delsart,Joey Huston,Yufeng Wang,Karl Jakobs,Ana Maria Rodriguez Vera,Savanna Shaw,Christian Ohm,Marina Cobal,Donal Joseph Mclaughlin,Gen Tateno,Sertac Ozturk,Xi Wang,Bruna Pascual,Jaroslava Schovancova,Ahmed Bassalat,Marjorie Shapiro,Grigore Tarna,Harry Simpson,Ketevi Adikle Assamagan,Maria Carnesale,Sinan Kuday,Maximiliano Sioli,Xiao Yang,Nello Bruscino,Adrian Alvarez Fernandez,Rahul Balasubramanian,Sarah Marie Demers Konezny,Fernando Monticelli,Andrei Snesarev,Wasikul Islam,Ying Wun Yvonne Ng,Osamu Jinnouchi,William Keaton Balunas,Thomas Michael Carter,Javier Alberto Aparisi Pozo,Benedict Martin Waugh,Javier Montejo Berlingen,Jason Peter Gombas,David Miller,Anna Ivina,Paolo Mastrandrea,Barbara Krystyna Wosiek,Laura Pintucci,Martin Spousta,Sergio Diez Cornell,Karel Cerny,Tristan Andrew Ruggeri,Federico Montereali,Hans Krueger,Asma Hadef,Michael Kwok Lam Chu,Bruce Donald Yabsley,Florent Bernon,Christian Weber,Alex Christopher Martyniuk,Daniela Bortoletto,Riccardo Longo,Stefan Tapprogge,Tatsuya Masubuchi,Dmitry Tsybyshev,Shenjian Chen,Juan Terron Cuadrado,Souad Batlamous,Tim Martin,Chiara Roda,Thi Ngoc Loan Truong,Mohamed Ouchrif,Tatiana Lyubushkina,Christian Grefe,Chen Jia,Mendes Jacques Da Costa,Antonio Manuel,Gianantonio Pezzullo,Laurynas Mince,Al Goshaw,Henri Bachacou,Joni Pham,Zhijun Liang,Stefano Zambito,Sergey Karpov,Zahra Farazpay,Pavol Strizenec,Wainer Vandelli,Christopher Lester,Shuzhou Zhang,Biagio Di Micco,Yahya AR Khwaira,Jonas Strandberg,Mitch Norfolk,Giovanni Padovano,Philippe Schwemling,Marcel Vos,Evelin Meoni,Zackary Lee Alegria,Albert Kong,Julian Wollrath,Charlie Chen,Judith Hofer,Sreelakshmi Sindhu,Dan Andrei Ciubotaru,Nanni Darbo,Caterina Doglioni,Iacopo Vivarelli,George Iakovidis,Pawel Malecki,Jan Stark,Paul Gessinger-Befurt,Masahiro Kuze,Benjamin Henry Hooberman,Sonia Carra,Davide Costanzo,Michael James Fenton,Meghranjana Chatterjee,Kehang Bai,Todd Brian Huffman,Alexander Undrus,Thorsten Kuhl,Giuliano Gustavino,Mateusz Dyndal,Luke Baines,Nils Julius Abicht,Ali Skaf,Paul Louis Tipton,Haider Abidi,Kathryn Grimm,Lisa Marie Baltes,Ian Brock,Maria Mironova,Andrey Kupich,Christopher Robyn Hayes,Jan Tuzlic Offermann,Seth Zenz,Serguei Kuleshov,Mike Strauss,Kai Zheng,Alexander Lory,Stefio Yosse Andrean,Alain Bellerive,Jiri Masik,Christoph Jagfeld,Edmund Xiang Lin Ting,Julie Kirk,Dominique Godin,Giuseppe Iacobucci,Benedetto Gorini
Published Date
2024/2/23
A search for a new ????′ gauge boson predicted by ????????− ???????? models, based on chargedcurrent Drell–Yan production, ????????→ ????±(∗)→ ????′ ????±????→ ????±????∓ ????±????, is presented. The data sample used corresponds to an integrated luminosity of 140 fb− 1 of proton–proton collisions at
Giuseppe Callea FAQs
What is Giuseppe Callea's h-index at University of Glasgow?
The h-index of Giuseppe Callea has been 127 since 2020 and 142 in total.
What are Giuseppe Callea's top articles?
The articles with the titles of
Search for pair-produced higgsinos decaying via Higgs or bosons to final states containing a pair of photons and a pair of -jets with the ATLAS detector
Combination of searches for heavy spin-1 resonances using 139 fb of proton-proton collision data at TeV with the ATLAS detector
Performance of the ATLAS forward proton Time-of-Flight detector in Run 2
Study of Z → l l γ decays at s = 8 TeV with the ATLAS detector
Search for non-resonant production of semi-visible jets using Run 2 data in ATLAS
Climbing to the Top of the ATLAS 13 TeV data
Search for invisible particles produced in association with single top quarks in proton-proton collisions at =13 TeV with the ATLAS detector
Differential cross-section measurements of the production of four charged leptons in association with two jets using the ATLAS detector
...
are the top articles of Giuseppe Callea at University of Glasgow.
What are Giuseppe Callea's research interests?
The research interests of Giuseppe Callea are: Particle Physics
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Giuseppe Callea has 77,625 citations in total.
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