Pavel Krokovny

Novosibirsk State University

H-index: 182

Europe-Russia

About Pavel Krokovny

Pavel Krokovny, With an exceptional h-index of 182 and a recent h-index of 108 (since 2020), a distinguished researcher at Novosibirsk State University, specializes in the field of High Energy Physics.

His recent articles reflect a diverse array of research interests and contributions to the field:

Helium identification with LHCb

Measurement of the Z boson production cross-section in pp collisions at = 5.02 TeV

Observation of the decay

Study of decays to final states at Belle II

Observation of Cabibbo-Suppressed Two-Body Hadronic Decays and Precision Mass Measurement of the Baryon

First observation of the decay

arXiv: Tracking of charged particles with nanosecond lifetimes at LHCb

Measurement of the branching fraction of the decay at Belle II

Pavel Krokovny Information

University	Novosibirsk State University
Position	___
Citations(all)	145356
Citations(since 2020)	61078
Cited By	102664
hIndex(all)	182
hIndex(since 2020)	108
i10Index(all)	1068
i10Index(since 2020)	785
Email	Access Email
University Profile Page	Novosibirsk State University

Pavel Krokovny Skills & Research Interests

High Energy Physics

Top articles of Pavel Krokovny

Helium identification with LHCb

Authors

Roel Aaij,Ahmed Sameh Wagih Abdelmotteleb,C Abellan Beteta,F Abudinén,Thomas Ackernley,Bernardo Adeva,Marco Adinolfi,P Adlarson,Christina Agapopoulou,Christine Angela Aidala,Ziad Ajaltouni,Simon Akar,Kazuyoshi Akiba,Pietro Albicocco,Johannes Albrecht,Federico Alessio,Michael Alexander,A Alfonso Albero,Zakariya Aliouche,P Alvarez Cartelle,Renaud Amalric,Sandra Amato,Jake Lewis Amey,Yasmine Amhis,Liupan An,Lucio Anderlini,Martin Andersson,Aleksei Andreianov,Pasquale Andreola,Mirco Andreotti,Dimitra Andreou,AA Anelli,Dong Ao,Flavio Archilli,Matteo Argenton,S Arguedas Cuendis,Alexander Artamonov,Marina Artuso,Elie Aslanides,Michele Atzeni,Benjamin Audurier,David Bacher,I Bachiller Perea,Sebastian Bachmann,Marie Bachmayer,JJ Back,A Bailly-reyre,P Baladron Rodriguez,V Balagura,W Baldini,J Baptista de Souza Leite,M Barbetti,IR Barbosa,RJ Barlow,S Barsuk,W Barter,M Bartolini,Fedor Baryshnikov,Jan-Marc Basels,Giovanni Bassi,Baasansuren Batsukh,Alexander Battig,Aurelio Bay,Anja Beck,Maik Becker,Franco Bedeschi,IB Bediaga,Andrew Beiter,Samuel Belin,Violaine Bellee,Konstantin Belous,Ilia Belov,Ivan Belyaev,Gaya Benane,Giovanni Bencivenni,Eli Ben-Haim,Alexander Berezhnoy,Roland Bernet,S Bernet Andres,HC Bernstein,C Bertella,A Bertolin,C Betancourt,F Betti,J Bex,Ia Bezshyiko,J Bhom,MS Bieker,NV Biesuz,P Billoir,A Biolchini,M Birch,FCR Bishop,A Bitadze,A Bizzeti,MP Blago,T Blake,F Blanc,JE Blank,S Blusk,D Bobulska,V Bocharnikov,JA Boelhauve,O Boente Garcia,T Boettcher,A Bohare,A Boldyrev,CS Bolognani,R Bolzonella,N Bondar,F Borgato,S Borghi,M Borsato,JT Borsuk,SA Bouchiba,TJV Bowcock,A Boyer,C Bozzi,MJ Bradley,S Braun,A Brea Rodriguez,N Breer,J Brodzicka,A Brossa Gonzalo,J Brown,D Brundu,A Buonaura,L Buonincontri,AT Burke,C Burr,A Bursche,A Butkevich,JS Butter,J Buytaert,W Byczynski,S Cadeddu,H Cai,R Calabrese,L Calefice,S Cali,M Calvi,M Calvo Gomez,J Cambon Bouzas,P Campana,DH Campora Perez,AF Campoverde Quezada,S Capelli,L Capriotti,R Caravaca-Mora,A Carbone

Journal

Journal of Instrumentation

Published Date

2024/2/1

The identification of helium nuclei at LHCb is achieved using a method based on measurements of ionisation losses in the silicon sensors and timing measurements in the Outer Tracker drift tubes. The background from photon conversions is reduced using the RICH detectors and an isolation requirement. The method is developed using ???????? collision data at

Measurement of the Z boson production cross-section in pp collisions at = 5.02 TeV

Authors

Roel Aaij,Ahmed Sameh Wagih Abdelmotteleb,Carlos Abellan Beteta,F Abudinén,Thomas Ackernley,Bernardo Adeva,Marco Adinolfi,P Adlarson,Hossein Afsharnia,Christina Agapopoulou,Christine Angela Aidala,Ziad Ajaltouni,Simon Akar,Kazuyoshi Akiba,Pietro Albicocco,Johannes Albrecht,Federico Alessio,Michael Alexander,A Alfonso Albero,Zakariya Aliouche,P Alvarez Cartelle,Renaud Amalric,Sandra Amato,Jake Lewis Amey,Yasmine Amhis,Liupan An,Lucio Anderlini,Martin Andersson,Aleksei Andreianov,Pasquale Andreola,Mirco Andreotti,Dimitra Andreou,Dong Ao,Flavio Archilli,Alexander Artamonov,Marina Artuso,Elie Aslanides,Michele Atzeni,Benjamin Audurier,I Bachiller Perea,Sebastian Bachmann,Marie Bachmayer,JJ Back,Aurelien Bailly-Reyre,P Baladron Rodriguez,Vladislav Balagura,Wander Baldini,J Baptista de Souza Leite,Matteo Barbetti,Ivanildo Rui Barbosa,RJ Barlow,Sergey Barsuk,William Barter,Matteo Bartolini,Fedor Baryshnikov,Jan-Marc Basels,Giovanni Bassi,Baasansuren Batsukh,Alexander Battig,Aurelio Bay,Anja Beck,Maik Becker,Franco Bedeschi,IB Bediaga,Andrew Beiter,Samuel Belin,Violaine Bellee,Konstantin Belous,Ilia Belov,Ivan Belyaev,Gaya Benane,Giovanni Bencivenni,Eli Ben-Haim,Alexander Berezhnoy,Roland Bernet,S Bernet Andres,Daniel Berninghoff,Harris Conan Bernstein,Claudia Bertella,Alessandro Bertolin,Christopher Betancourt,Federico Betti,Josh Bex,Ia Bezshyiko,Jihyun Bhom,Lingzhu Bian,Martin Stefan Bieker,Nicolo Vladi Biesuz,Pierre Billoir,Alice Biolchini,Matthew Birch,Fionn Caitlin Ros Bishop,Alexander Bitadze,Andrea Bizzeti,Michele Piero Blago,Thomas Blake,Frederic Blanc,Jonah Evan Blank,Steven Blusk,Dana Bobulska,Vladimir Bocharnikov,Julian Alexander Boelhauve,O Boente Garcia,Thomas Boettcher,Abhishek Bohare,Alexey Boldyrev,CS Bolognani,Riccardo Bolzonella,Nikolay Bondar,Federica Borgato,Silvia Borghi,Martino Borsato,Jozef Tomasz Borsuk,Sonia Amina Bouchiba,TJV Bowcock,Alexandre Boyer,Concezio Bozzi,Matthew John Bradley,Svende Braun,A Brea Rodriguez,Nils Breer,Jolanta Brodzicka,A Brossa Gonzalo,J Brown,Davide Brundu,Annarita Buonaura,Laura Buonincontri,Aodhan Tomas Burke,Christopher Burr,Albert Bursche,Anatoly Butkevich,Jordy Sebastiaan Butter,Jan Buytaert,Wiktor Byczynski,Sandro Cadeddu,Hao Cai,Roberto Calabrese,Lukas Calefice,Stefano Cali,Marta Calvi,M Calvo Gomez,J Cambon Bouzas,Pierluigi Campana,DH Campora Perez,AF Campoverde Quezada,Simone Capelli,Lorenzo Capriotti,Angelo Carbone,L Carcedo Salgado,Roberta Cardinale

Journal

Journal of High Energy Physics

Published Date

2024/2

The first measurement of the Z boson production cross-section at centre-of-mass energy= 5. 02 TeV in the forward region is reported, using pp collision data collected by the LHCb experiment in year 2017, corresponding to an integrated luminosity of 100±2 pb− 1. The production cross-section is measured for final-state muons in the pseudorapidity range 2. 0< η< 4. 5 with transverse momentum p T> 20 GeV/c. The integrated cross-section is determined to be

Observation of the decay

Authors

Roel Aaij,Ahmed Sameh Wagih Abdelmotteleb,C Abellan Beteta,F Abudinén,Thomas Ackernley,JA Adams,AA Adefisoye,Bernardo Adeva,Marco Adinolfi,P Adlarson,Christina Agapopoulou,Christine Angela Aidala,Ziad Ajaltouni,Simon Akar,Kazuyoshi Akiba,Pietro Albicocco,Johannes Albrecht,Federico Alessio,Michael Alexander,Zakariya Aliouche,P Alvarez Cartelle,Renaud Amalric,Sandra Amato,Jake Lewis Amey,Yasmine Amhis,Liupan An,Lucio Anderlini,Martin Andersson,Aleksei Andreianov,Pasquale Andreola,Mirco Andreotti,Dimitra Andreou,Alessia Anelli,Dong Ao,Flavio Archilli,Matteo Argenton,S Arguedas Cuendis,Alexander Artamonov,Marina Artuso,Elie Aslanides,Michele Atzeni,Benjamin Audurier,David Bacher,I Bachiller Perea,Sebastian Bachmann,Marie Bachmayer,JJ Back,P Baladron Rodriguez,Vladislav Balagura,Wander Baldini,J Leite,Matteo Barbetti,Ivanildo Rui Barbosa,RJ Barlow,Sergey Barsuk,William Barter,Matteo Bartolini,Justin Bartz,Fedor Baryshnikov,Jan-Marc Basels,Giovanni Bassi,Baasansuren Batsukh,Alexander Battig,Aurelio Bay,Anja Beck,Maik Becker,Franco Bedeschi,IB Bediaga,Andrew Beiter,Samuel Belin,Violaine Bellee,Konstantin Belous,Ilia Belov,Ivan Belyaev,Gaya Benane,Giovanni Bencivenni,Eli Ben-Haim,Alexander Berezhnoy,Roland Bernet,S Bernet Andres,Claudia Bertella,Alessandro Bertolin,Christopher Betancourt,Federico Betti,Josh Bex,Ia Bezshyiko,Jihyun Bhom,Martin Stefan Bieker,Nicolo Vladi Biesuz,Pierre Billoir,Alice Biolchini,Matthew Birch,Fionn Caitlin Ros Bishop,Alexander Bitadze,Andrea Bizzeti,Thomas Blake,Frederic Blanc,Jonah Evan Blank,Steven Blusk,Vladimir Bocharnikov,Julian Alexander Boelhauve,O Boente Garcia,Thomas Boettcher,Abhishek Bohare,Alexey Boldyrev,CS Bolognani,Riccardo Bolzonella,Nikolay Bondar,Federica Borgato,Silvia Borghi,Martino Borsato,Jozef Tomasz Borsuk,Sonia Amina Bouchiba,TJV Bowcock,Alexandre Boyer,Concezio Bozzi,Matthew John Bradley,A Brea Rodriguez,Nils Breer,Jolanta Brodzicka,A Brossa Gonzalo,J Brown,Davide Brundu,Emma Buchanan,Annarita Buonaura,Laura Buonincontri,Aodhan Tomas Burke,Christopher Burr,Albert Bursche,Anatoly Butkevich,Jordy Sebastiaan Butter,Jan Buytaert,Wiktor Byczynski,Sandro Cadeddu,Hao Cai,Roberto Calabrese,Lukas Calefice,Stefano Cali,Marta Calvi,M Calvo Gomez,J Cambon Bouzas,Pierluigi Campana,DH Perez,AF Quezada,Simone Capelli,Lorenzo Capriotti,R Caravaca-Mora,Angelo Carbone,L Carcedo Salgado,Roberta Cardinale

Journal

arXiv preprint arXiv:2402.05523

Published Date

2024/2/8

The first observation of the decay is reported with high significance using proton-proton collision data, corresponding to an integrated luminosity of 9fb, collected with the LHCb detector at centre-of-mass energies of 7, 8, and 13 TeV. The ratio of its branching fraction relative to the channel is measured to be $$ \frac{ {\cal{B}}( B_c^+ \to J/\psi \pi^+\pi^0 ) } { {\cal{B}}( B_c^+ \to J/\psi \pi^+ ) } = 2.80 \pm 0.15 \pm 0.11 \pm 0.16 \,, $$ where the first uncertainty is statistical, the second systematic and the third related to imprecise knowledge of the branching fractions for and decays, which are used to determine the detection efficiency. The mass spectrum is found to be consistent with the dominance of an intermediate contribution in accordance with a model based on QCD factorisation.

Study of decays to final states at Belle II

Authors

I Adachi,L Aggarwal,H Ahmed,H Aihara,N Akopov,A Aloisio,N Anh Ky,DM Asner,H Atmacan,T Aushev,V Aushev,M Aversano,V Babu,H Bae,S Bahinipati,P Bambade,Sw Banerjee,S Bansal,M Barrett,J Baudot,A Baur,A Beaubien,F Becherer,J Becker,JV Bennett,FU Bernlochner,V Bertacchi,M Bertemes,E Bertholet,M Bessner,S Bettarini,B Bhuyan,F Bianchi,T Bilka,D Biswas,A Bobrov,D Bodrov,A Bolz,A Bondar,A Bozek,M Bračko,P Branchini,TE Browder,A Budano,S Bussino,M Campajola,L Cao,G Casarosa,C Cecchi,J Cerasoli,M-C Chang,P Chang,P Cheema,BG Cheon,K Chilikin,K Chirapatpimol,H-E Cho,K Cho,S-J Cho,S-K Choi,S Choudhury,L Corona,S Das,F Dattola,De La Cruz-Burelo,SA De La Motte,G De Nardo,M De Nuccio,G De Pietro,R de Sangro,M Destefanis,R Dhamija,A Di Canto,F Di Capua,J Dingfelder,Z Doležal,TV Dong,M Dorigo,K Dort,S Dreyer,S Dubey,G Dujany,P Ecker,M Eliachevitch,P Feichtinger,T Ferber,D Ferlewicz,T Fillinger,C Finck,G Finocchiaro,A Fodor,F Forti,A Frey,BG Fulsom,A Gabrielli,E Ganiev,M Garcia-Hernandez,R Garg,G Gaudino,V Gaur,A Gaz,A Gellrich,G Ghevondyan,D Ghosh,H Ghumaryan,G Giakoustidis,R Giordano,A Giri,B Gobbo,R Godang,O Gogota,P Goldenzweig,W Gradl,T Grammatico,E Graziani,D Greenwald,Z Gruberová,T Gu,Y Guan,K Gudkova,S Halder,Y Han,T Hara,H Hayashii,S Hazra,C Hearty,MT Hedges,A Heidelbach,I Heredia de la Cruz,M Hernández Villanueva,T Higuchi,M Hoek,M Hohmann,P Horak,C-L Hsu,T Humair,T Iijima,N Ipsita,A Ishikawa,R Itoh,M Iwasaki,P Jackson,WW Jacobs,E-J Jang,QP Ji,S Jia,Y Jin,KK Joo,H Junkerkalefeld,H Kakuno

Journal

arXiv preprint arXiv:2401.12021

Published Date

2024/1/22

We present an analysis of the process (where = 1, 2, or 3) reconstructed in of Belle II data during a special run of the SuperKEKB collider at four energy points near the peak of the resonance. By analyzing the mass distribution of the system and the Born cross sections of the process, we report the first observation of decays to the and final states, and find no evidence for decays to . Possible intermediate states in the transitions are also investigated, and no evidence for decays proceeding via the or intermediate states is found. We measure Born cross sections for the process that, combined with results from Belle, improve the precision of measurements of the mass and width by nearly a factor of two to MeV/ and MeV, respectively. The relative ratios of the Born cross sections at the resonance peak are also reported for the first time.

Observation of Cabibbo-Suppressed Two-Body Hadronic Decays and Precision Mass Measurement of the Baryon

Authors

Roel Aaij,Ahmed Sameh Wagih Abdelmotteleb,C Abellan Beteta,F Abudinén,Thomas Ackernley,Bernardo Adeva,Marco Adinolfi,P Adlarson,Hossein Afsharnia,Christina Agapopoulou,Christine Angela Aidala,Ziad Ajaltouni,Simon Akar,Kazuyoshi Akiba,Pietro Albicocco,Johannes Albrecht,Federico Alessio,Michael Alexander,A Alfonso Albero,Zakariya Aliouche,P Alvarez Cartelle,Renaud Amalric,Sandra Amato,Jake Lewis Amey,Yasmine Amhis,Liupan An,Lucio Anderlini,Martin Andersson,Aleksei Andreianov,Pasquale Andreola,Mirco Andreotti,Dimitra Andreou,Dong Ao,Flavio Archilli,Alexander Artamonov,Marina Artuso,Elie Aslanides,Michele Atzeni,Benjamin Audurier,David Bacher,I Bachiller Perea,Sebastian Bachmann,Marie Bachmayer,JJ Back,Aurelien Bailly-Reyre,P Baladron Rodriguez,Vladislav Balagura,Wander Baldini,J Baptista de Souza Leite,Matteo Barbetti,Ivanildo Rui Barbosa,RJ Barlow,Sergey Barsuk,William Barter,Matteo Bartolini,Fedor Baryshnikov,Jan-Marc Basels,Giovanni Bassi,Baasansuren Batsukh,Alexander Battig,Aurelio Bay,Anja Beck,Maik Becker,Franco Bedeschi,IB Bediaga,Andrew Beiter,Samuel Belin,Violaine Bellee,Konstantin Belous,Ilia Belov,Ivan Belyaev,Gaya Benane,Giovanni Bencivenni,Eli Ben-Haim,Alexander Berezhnoy,Roland Bernet,S Bernet Andres,Daniel Berninghoff,Harris Conan Bernstein,Claudia Bertella,Alessandro Bertolin,Christopher Betancourt,Federico Betti,Josh Bex,Ia Bezshyiko,Jihyun Bhom,Lingzhu Bian,Martin Stefan Bieker,Nicolo Vladi Biesuz,Pierre Billoir,Alice Biolchini,Matthew Birch,Fionn Caitlin Ros Bishop,Alexander Bitadze,Andrea Bizzeti,Michele Piero Blago,Thomas Blake,Frederic Blanc,Jonah Evan Blank,Steven Blusk,Dana Bobulska,Vladimir Bocharnikov,Julian Alexander Boelhauve,O Boente Garcia,Thomas Boettcher,Abhishek Bohare,Alexey Boldyrev,CS Bolognani,Riccardo Bolzonella,Nikolay Bondar,Federica Borgato,Silvia Borghi,Martino Borsato,Jozef Tomasz Borsuk,Sonia Amina Bouchiba,TJV Bowcock,Alexandre Boyer,Concezio Bozzi,Matthew John Bradley,Svende Braun,A Brea Rodriguez,Nils Breer,Jolanta Brodzicka,A Brossa Gonzalo,J Brown,Davide Brundu,Annarita Buonaura,Laura Buonincontri,Aodhan Tomas Burke,Christopher Burr,Albert Bursche,Anatoly Butkevich,Jordy Sebastiaan Butter,Jan Buytaert,Wiktor Byczynski,Sandro Cadeddu,Hao Cai,Roberto Calabrese,Lukas Calefice,Stefano Cali,Marta Calvi,M Calvo Gomez,J Cambon Bouzas,Pierluigi Campana,DH Campora Perez,AF Campoverde Quezada,Simone Capelli,Lorenzo Capriotti,Angelo Carbone,L Carcedo Salgado

Journal

Physical Review Letters

Published Date

2024/2/23

The first observation of the singly Cabibbo-suppressed Ω c 0→ Ω− K+ and Ω c 0→ Ξ− π+ decays is reported, using proton-proton collision data at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.4 fb− 1, collected with the LHCb detector between 2016 and 2018. The branching fraction ratios are measured to be B (Ω c 0→ Ω− K+) B (Ω c 0→ Ω− π+)=[6.08±0.51 (stat)±0.40 (syst)]%, B (Ω c 0→ Ξ− π+) B (Ω c 0→ Ω− π+)=[15.81±0.87 (stat)±0.44 (syst)±0.16 (ext)]%. In addition, using the Ω c 0→ Ω− π+ decay channel, the Ω c 0 baryon mass is measured to be M (Ω c 0)= 2695.28±0.07 (stat)±0.27 (syst)±0.30 (ext) MeV, improving the precision of the previous world average by a factor of 4.

First observation of the decay

Authors

Roel Aaij,Ahmed Sameh Wagih Abdelmotteleb,C Abellan Beteta,F Abudinén,Thomas Ackernley,Bernardo Adeva,Marco Adinolfi,Hossein Afsharnia,Christina Agapopoulou,Christine Angela Aidala,Salvatore Aiola,Ziad Ajaltouni,Simon Akar,Kazuyoshi Akiba,Johannes Albrecht,Federico Alessio,Michael Alexander,A Alfonso Albero,Zakariya Aliouche,P Alvarez Cartelle,Renaud Amalric,Sandra Amato,Jake Lewis Amey,Yasmine Amhis,Liupan An,Lucio Anderlini,Martin Andersson,Aleksei Andreianov,Mirco Andreotti,Dimitra Andreou,Dong Ao,Flavio Archilli,Alexander Artamonov,Marina Artuso,Elie Aslanides,Michele Atzeni,Benjamin Audurier,Sebastian Bachmann,Marie Bachmayer,JJ Back,Aurelien Bailly-Reyre,P Baladron Rodriguez,Vladislav Balagura,Wander Baldini,J Baptista de Souza Leite,Matteo Barbetti,RJ Barlow,Sergey Barsuk,William Barter,Matteo Bartolini,Fedor Baryshnikov,Jan-Marc Basels,Giovanni Bassi,Baasansuren Batsukh,Alexander Battig,Aurelio Bay,Anja Beck,Maik Becker,Franco Bedeschi,IB Bediaga,Andrew Beiter,Vladislav Belavin,Samuel Belin,Violaine Bellee,Konstantin Belous,Ilia Belov,Ivan Belyaev,Gaya Benane,Giovanni Bencivenni,Eli Ben-Haim,Alexander Berezhnoy,Roland Bernet,S Bernet Andres,Daniel Berninghoff,Harris Conan Bernstein,Claudia Bertella,Alessandro Bertolin,Christopher Betancourt,Federico Betti,Ia Bezshyiko,Srishti Bhasin,Jihyun Bhom,Lingzhu Bian,Martin Stefan Bieker,Nicolo Vladi Biesuz,Simone Bifani,Pierre Billoir,Alice Biolchini,Matthew Birch,Fionn Caitlin Ros Bishop,Alexander Bitadze,Andrea Bizzeti,Michele Piero Blago,Thomas Blake,Frederic Blanc,Steven Blusk,Dana Bobulska,Julian Alexander Boelhauve,O Boente Garcia,Thomas Boettcher,Alexey Boldyrev,CS Bolognani,Riccardo Bolzonella,Nikolay Bondar,Federica Borgato,Silvia Borghi,Martino Borsato,Jozef Tomasz Borsuk,Sonia Amina Bouchiba,TJV Bowcock,Alexandre Boyer,Concezio Bozzi,Matthew John Bradley,Svende Braun,A Brea Rodriguez,Jolanta Brodzicka,A Brossa Gonzalo,J Brown,Davide Brundu,Annarita Buonaura,Laura Buonincontri,Aodhan Tomas Burke,Christopher Burr,Albert Bursche,Anatoly Butkevich,Jordy Sebastiaan Butter,Jan Buytaert,Wiktor Byczynski,Sandro Cadeddu,Hao Cai,Roberto Calabrese,Lukas Calefice,Stefano Cali,Ryan Calladine,Marta Calvi,M Calvo Gomez,Pierluigi Campana,DH Campora Perez,AF Campoverde Quezada,Simone Capelli,Lorenzo Capriotti,Angelo Carbone,Giovanni Carboni,Roberta Cardinale,Alessandro Cardini,Ina Carli,Paolo Carniti,L Carus,A Casais Vidal,Rowina Caspary

Journal

Physical Review D

Published Date

2023/8/14

The B+→ D s+ D s− K+ decay is observed for the first time using proton-proton collision data collected by the LHCb detector at center-of-mass energies of 7, 8, and 13 TeV, corresponding to an integrated luminosity of 9 fb− 1. Its branching fraction relative to that of the B+→ D+ D− K+ decay is measured to be B (B+→ D s+ D s− K+) B (B+→ D+ D− K+)= 0.525±0.033±0.027±0.034, where the first uncertainty is statistical, the second systematic, and the third is due to the uncertainties on the branching fractions of the D s±→ K∓ K±π±and D±→ K∓ π±π±decays. This measurement fills an experimental gap in the knowledge of the family of Cabibbo-favored b→ c c s transitions and opens the path for unique studies of spectroscopy in future.

arXiv: Tracking of charged particles with nanosecond lifetimes at LHCb

Authors

Roel Aaij,Shinichi Okamura,Matthew John Bradley,Gregory Ciezarek,Maciej Wojciech Dudek,Paula Collins,Leonardo Santoro,Nico Kleijne,Wenbin Qian,Ned Francis Howarth,Julio Novoa Fernandez,Jie Wu,Aodhan Tomas Burke,Tomasz Szumlak,Jennifer Clare Smallwood,Serena Maccolini,Andrzej Kupsc,Marcel Merk,Artem Okhotnikov,Paula Garcia Moreno,Alexander Bitadze,Domenico Galli,Zirui Wang,Lucio Anderlini,Pavel Krokovny,Gianfranco Morello,Andrea Merli,Jiayin Sun,Ivan Polyakov,Carmen Giugliano,Pierfrancesco Cifra,Pei-Rong Li,Guillaume Pietrzyk,Paul Nathaniel Swallow,Giorgia Tonani,Leonid Kravchuk,Shuangli Yang,Menglin Xu,Cheuk Ping Wong,Francesca Swystun,Ayomide Matthew Adefisoye,Thomas Kirn,Gaya Benane,Yanxi Wu,Shulei Zhang,Luke George Scantlebury Smead,Niels Tuning,Bogdan Kutsenko,Sebastian Bachmann,Marie Bachmayer,Zhenzi Wang,Mindaugas Sarpis,Carina Trippl,Timothy Evans,Giovanni Punzi,Da Yu Tou,Davide Nicotra,Neville Harnew,Camilla De Angelis,Xiaofan Hu,Izabela Juszczak,Daniel James David Thompson,Fionn Caitlin Ros Bishop,Marcin Chrzaszcz,Jonathan Edward Davies,Sune Jakobsen,Yuxi Gao,Marius Maehlum Halvorsen,Guido Haefeli,Sanqiang Qu,Christoph Langenbruch,Sergey Barsuk,Florin Maciuc,Alexander Davidson,Davide Pinci,Miriam Lucio Martinez,Chenjia Zhang,Alice Biolchini,Radoslav Marchevski,Sigrid Scherl,Yangheng Zheng,Daria Strekalina,Giacomo Graziani,Nikolay Nikitin,Oleg Stenyakin,Yuki Fujii,Vladimir Chulikov,Louis Lenard Gerken,Mick Mulder,Michele Atzeni,Sascha Stahl,Giuliana Galati,Sebastian Neubert,Artur Ishteev,Christopher Jones,Alexandru Tudor Grecu,Robbert Erik Geertsema,Mikhail Zavertyaev,Eluned Smith,Gabriele Martelli,Tai-hua Lin,Manuel Guittiere,Anna Danilina,Valeriia Zhovkovska,Jascha Peter Grabowski,Jan-Marc Basels,Matthew Needham,Kunal Garg,Burkhard Schmidt,Zeqing Mu,Thomas Ackernley,Justin Bartz,Erika De Lucia,Shuchong Ding,Ivan Belyaev,Edward Brendan Shields,Xueting Yang,Patricia Camargo Magalhaes,Anni Kauniskangas,Alexander Leon Gilman,Abolhassan Jawahery,Fanjie Meng,Mark Waterlaat,Hengne Li,Richard Morgan Williams,Bhagyashree Pagare,Lars Eklund,Luis Miguel Garcia Martin,Alessandra Gioventù,Paul Andre Günther,Alvaro Gomes,Joshua Ethan Horswill,Matthew Kenzie,Holger Stevens,Desmond Mzamo Shangase,Daniele Passaro,Micol Olocco,Kimberley Vos,Angelo Carbone,Olivier Deschamps,Baasansuren Batsukh,Saul Calderon Ramirez,Katharina Müller,Philipp Roloff,Josh Bex,Massimiliano Fiorini,Patrick Spradlin,Domenico Riccardi,Liupan An,Youhua Yang

Published Date

2024/3/14

Measurement of the branching fraction of the decay at Belle II

Authors

Alejandro Alfonso Albero,Míriam Calvo Gómez,Alessandro Camboni,Samuel Coquereau,Lluís Garrido Beltrán,David Gascón Fora,Pere Gironella Gironell,Elisabet Golobardes,Ricardo Graciani Díaz,R Manera Escalero,Ricard Vázquez Gómez,Xavier Vilasis-Cardona,P Alvarez Cartelle,LHCb Collaboration

Journal

Physical Review D, 2020, vol. 102, num. 1, p. 012011

Published Date

2020/7/31

A measurement of the branching fraction of the decay B0s→K0SK0S is performed using proton-proton collision data corresponding to an integrated luminosity of 5 fb−1 collected by the LHCb experiment between 2011 and 2016. The branching fraction is determined to be B(B0s→K0SK0S)= [8.3±1.6(stat)±0.9(syst)±0.8(norm)±0.3(fs/fd)]×10−6, where the first uncertainty is statistical, the second is systematic, and the third and fourth are due to uncertainties on the branching fraction of the normalization mode B0→ϕK0S and the ratio of hadronization fractions fs/fd. This is the most precise measurement of this branching fraction to date. Furthermore, a measurement of the branching fraction of the decay B0→K0SK0S is performed relative to that of the B0s→K0SK0S channel, and is found to be B(B0→K0SK0S)B(B0s→K0SK0S)=[7.5±3.1(stat)±0.5(syst)±0.3(fs/fd)]×10−2.

Prompt and nonprompt ψ(2S) production in pPb collisions at = 8.16 TeV

Authors

R Aaij,ASW Abdelmotteleb,C Abellan Beteta,F Abudinén,T Ackernley,B Adeva,M Adinolfi,P Adlarson,H Afsharnia,C Agapopoulou,CA Aidala,Z Ajaltouni,S Akar,K Akiba,P Albicocco,J Albrecht,F Alessio,M Alexander,A Alfonso Albero,Z Aliouche,P Alvarez Cartelle,R Amalric,S Amato,JL Amey,Y Amhis,L An,L Anderlini,M Andersson,A Andreianov,P Andreola,M Andreotti,D Andreou,A Anelli,D Ao,F Archilli,S Arguedas Cuendis,A Artamonov,M Artuso,E Aslanides,M Atzeni,B Audurier,D Bacher,I Bachiller Perea,S Bachmann,M Bachmayer,JJ Back,A Bailly-reyre,P Baladron Rodriguez,V Balagura,W Baldini,J Baptista de Souza Leite,M Barbetti,IR Barbosa,RJ Barlow,S Barsuk,W Barter,M Bartolini,F Baryshnikov,JM Basels,G Bassi,B Batsukh,A Battig,A Bay,A Beck,M Becker,F Bedeschi,IB Bediaga,A Beiter,S Belin,V Bellee,K Belous,I Belov,I Belyaev,G Benane,G Bencivenni,E Ben-Haim,A Berezhnoy,R Bernet,S Bernet Andres,HC Bernstein,C Bertella,A Bertolin,C Betancourt,F Betti,J Bex,Ia Bezshyiko,J Bhom,MS Bieker,NV Biesuz,P Billoir,A Biolchini,M Birch,FCR Bishop,A Bitadze,A Bizzeti,MP Blago,T Blake,F Blanc,JE Blank,S Blusk,D Bobulska,V Bocharnikov,JA Boelhauve,O Boente Garcia,T Boettcher,A Bohare,A Boldyrev,CS Bolognani,R Bolzonella,N Bondar,F Borgato,S Borghi,M Borsato,JT Borsuk,F Bossù,SA Bouchiba,TJV Bowcock,A Boyer,C Bozzi,MJ Bradley,S Braun,A Brea Rodriguez,N Breer,J Brodzicka,A Brossa Gonzalo,J Brown,D Brundu,A Buonaura,L Buonincontri,AT Burke,C Burr,A Bursche,A Butkevich,JS Butter,J Buytaert,W Byczynski,S Cadeddu,H Cai,R Calabrese,L Calefice,S Cali,M Calvi,M Calvo Gomez,J Cambon Bouzas,P Campana,DH Campora Perez,AF Campoverde Quezada,S Capelli,L Capriotti,A Carbone

Journal

Journal of High Energy Physics

Published Date

2024/4

The production of ψ (2S) mesons in proton-lead collisions at a centre-of-mass energy per nucleon pair of= 8. 16 TeV is studied with the LHCb detector using data corresponding to an integrated luminosity of 34 nb− 1. The prompt and nonprompt ψ (2S) production cross-sections and the ratio of the ψ (2S) to J/ψ cross-section are measured as a function of the meson transverse momentum and rapidity in the nucleon-nucleon centre-of-mass frame, together with forward-to-backward ratios and nuclear modification factors. The production of prompt ψ (2S) is observed to be more suppressed compared to pp collisions than the prompt J/ψ production, while the nonprompt productions have similar suppression factors.

Measurements of the branching fraction, polarization, and asymmetry for the decay

Authors

Y Guan,AJ Schwartz,K Kinoshita,I Adachi,H Aihara,S Al Said,DM Asner,H Atmacan,R Ayad,S Bahinipati,Sw Banerjee,K Belous,J Bennett,M Bessner,V Bhardwaj,B Bhuyan,D Biswas,A Bobrov,D Bodrov,J Borah,A Bozek,M Bračko,P Branchini,A Budano,M Campajola,L Cao,D Červenkov,M-C Chang,P Chang,BG Cheon,K Chilikin,HE Cho,K Cho,S-K Choi,Y Choi,S Choudhury,S Das,G De Nardo,G De Pietro,R Dhamija,F Di Capua,J Dingfelder,Z Doležal,TV Dong,S Dubey,P Ecker,D Epifanov,T Ferber,D Ferlewicz,BG Fulsom,V Gaur,A Giri,P Goldenzweig,E Graziani,T Gu,K Gudkova,C Hadjivasiliou,K Hayasaka,H Hayashii,S Hazra,MT Hedges,W-S Hou,C-L Hsu,N Ipsita,A Ishikawa,R Itoh,M Iwasaki,WW Jacobs,S Jia,Y Jin,KK Joo,T Kawasaki,CH Kim,DY Kim,K-H Kim,YJ Kim,Y-K Kim,P Kodyš,A Korobov,S Korpar,E Kovalenko,P Križan,P Krokovny,T Kuhr,R Kumar,K Kumara,T Kumita,Y-J Kwon,Y-T Lai,SC Lee,D Levit,LK Li,Y Li,YB Li,L Li Gioi,J Libby,D Liventsev,T Luo,M Masuda,T Matsuda,SK Maurya,F Meier,M Merola,F Metzner,K Miyabayashi,R Mizuk,GB Mohanty,R Mussa,I Nakamura,M Nakao,Z Natkaniec,A Natochii,L Nayak,M Nayak,M Niiyama,S Nishida,S Ogawa,H Ono,G Pakhlova,S Pardi,H Park,J Park,S-H Park,S Paul,R Pestotnik,LE Piilonen,T Podobnik,E Prencipe,MT Prim,M Röhrken,G Russo,S Sandilya,L Santelj,V Savinov,G Schnell,C Schwanda,Y Seino,K Senyo,ME Sevior,W Shan,J-G Shiu,E Solovieva,M Starič,K Sumisawa,M Takizawa,U Tamponi,K Tanida,F Tenchini,R Tiwary,K Trabelsi

Journal

arXiv preprint arXiv:2401.04646

Published Date

2024/1/9

We present a measurement of , a charmless decay into two vector mesons, using 772 pairs collected with the Belle detector at the KEKB collider. The decay is observed with a significance of 7.9 standard deviations. We measure a branching fraction , a fraction of longitudinal polarization , and a time-integrated asymmetry = , where the first uncertainties listed are statistical and the second are systematic. This is the first observation of , and the first measurements of and for this decay.

Momentum scale calibration of the LHCb spectrometer

Authors

Roel Aaij,Ahmed Sameh Wagih Abdelmotteleb,C Abellan Beteta,F Abudinén,Thomas Ackernley,Bernardo Adeva,Marco Adinolfi,P Adlarson,Christina Agapopoulou,Christine Angela Aidala,Ziad Ajaltouni,Simon Akar,Kazuyoshi Akiba,Pietro Albicocco,Johannes Albrecht,Federico Alessio,Michael Alexander,A Alfonso Albero,Zakariya Aliouche,P Alvarez Cartelle,Renaud Amalric,Sandra Amato,Jake Lewis Amey,Yasmine Amhis,Liupan An,Lucio Anderlini,Martin Andersson,Aleksei Andreianov,Pasquale Andreola,Mirco Andreotti,Dimitra Andreou,Alessia Anelli,Dong Ao,Flavio Archilli,Matteo Argenton,S Arguedas Cuendis,Alexander Artamonov,Marina Artuso,Elie Aslanides,Michele Atzeni,Benjamin Audurier,David Bacher,I Bachiller Perea,Sebastian Bachmann,Marie Bachmayer,JJ Back,P Baladron Rodriguez,Vladislav Balagura,Wander Baldini,J Baptista de Souza Leite,Matteo Barbetti,Ivanildo Rui Barbosa,RJ Barlow,Sergey Barsuk,William Barter,Matteo Bartolini,Justin Bartz,Fedor Baryshnikov,Jan-Marc Basels,Giovanni Bassi,Baasansuren Batsukh,Alexander Battig,Aurelio Bay,Anja Beck,Maik Becker,Franco Bedeschi,IB Bediaga,Andrew Beiter,Samuel Belin,Violaine Bellee,Konstantin Belous,Ilia Belov,Ivan Belyaev,Gaya Benane,Giovanni Bencivenni,Eli Ben-Haim,Alexander Berezhnoy,Roland Bernet,S Bernet Andres,Claudia Bertella,Alessandro Bertolin,Christopher Betancourt,Federico Betti,Josh Bex,Ia Bezshyiko,Jihyun Bhom,Martin Stefan Bieker,Nicolo Vladi Biesuz,Pierre Billoir,Alice Biolchini,Matthew Birch,Fionn Caitlin Ros Bishop,Alexander Bitadze,Andrea Bizzeti,Michele Piero Blago,Thomas Blake,Frederic Blanc,Jonah Evan Blank,Steven Blusk,Dana Bobulska,Vladimir Bocharnikov,Julian Alexander Boelhauve,O Boente Garcia,Thomas Boettcher,Abhishek Bohare,Alexey Boldyrev,CS Bolognani,Riccardo Bolzonella,Nikolay Bondar,Federica Borgato,Silvia Borghi,Martino Borsato,Jozef Tomasz Borsuk,Sonia Amina Bouchiba,TJV Bowcock,Alexandre Boyer,Concezio Bozzi,Matthew John Bradley,A Brea Rodriguez,Nils Breer,Jolanta Brodzicka,A Brossa Gonzalo,J Brown,Davide Brundu,Annarita Buonaura,Laura Buonincontri,Aodhan Tomas Burke,Christopher Burr,Albert Bursche,Anatoly Butkevich,Jordy Sebastiaan Butter,Jan Buytaert,Wiktor Byczynski,Sandro Cadeddu,Hao Cai,Roberto Calabrese,Lukas Calefice,Stefano Cali,Marta Calvi,M Calvo Gomez,J Cambon Bouzas,Pierluigi Campana,DH Campora Perez,AF Campoverde Quezada,Simone Capelli,Lorenzo Capriotti,R Caravaca-Mora,Angelo Carbone,L Carcedo Salgado,Roberta Cardinale

Journal

Journal of Instrumentation

Published Date

2024/2/1

For accurate determination of particle masses accurate knowledge of the momentum scale of the detectors is crucial. The procedure used to calibrate the momentum scale of the LHCb spectrometer is described and illustrated using the performance obtained with an integrated luminosity of 1.6 fb− 1 collected during 2016 in ???????? running. The procedure uses large samples of ????/????→ ????+ ????− and ????+→ ????/????????+ decays and leads to a relative accuracy of 3× 10− 4 on the momentum scale.

Improved Measurement of Violation Parameters in Decays in the Vicinity of the Resonance

Authors

Journal

Physical review letters

Published Date

2024/2/2

The decay-time-dependent C P asymmetry in B s 0→ J/ψ (→ μ+ μ−) K+ K− decays is measured using proton-proton collision data, corresponding to an integrated luminosity of 6 fb− 1, collected with the LHCb detector at a center-of-mass energy of 13 TeV. Using a sample of approximately 349 000 B s 0 signal decays with an invariant K+ K− mass in the vicinity of the ϕ (1020) resonance, the C P-violating phase ϕ s is measured, along with the difference in decay widths of the light and heavy mass eigenstates of the B s 0− Bs 0 system, Δ Γ s, and the difference of the average B s 0 and B 0 meson decay widths, Γ s− Γ d. The values obtained are ϕ s=− 0.039±0.022±0.006 rad, Δ Γ s= 0.0845±0.0044±0.0024 ps− 1, and Γ s− Γ d=− 0.05 6− 0.0015+ 0.0013±0.0014 ps− 1, where the first uncertainty is statistical and the second systematic. These are the most precise single measurements to date and are consistent with …

A test of lepton flavor universality with a measurement of using hadronic tagging at the Belle II experiment

Authors

I Adachi,K Adamczyk,L Aggarwal,H Ahmed,H Aihara,N Akopov,A Aloisio,N Anh Ky,DM Asner,H Atmacan,T Aushev,V Aushev,M Aversano,R Ayad,V Babu,H Bae,S Bahinipati,P Bambade,Sw Banerjee,S Bansal,M Barrett,J Baudot,M Bauer,A Baur,A Beaubien,F Becherer,J Becker,JV Bennett,FU Bernlochner,V Bertacchi,M Bertemes,E Bertholet,M Bessner,S Bettarini,B Bhuyan,F Bianchi,L Bierwirth,T Bilka,S Bilokin,D Biswas,A Bobrov,D Bodrov,A Bolz,A Bondar,J Borah,A Bozek,M Bračko,P Branchini,RA Briere,TE Browder,A Budano,S Bussino,M Campajola,L Cao,G Casarosa,C Cecchi,J Cerasoli,M-C Chang,P Chang,R Cheaib,P Cheema,C Chen,BG Cheon,K Chilikin,K Chirapatpimol,H-E Cho,K Cho,S-J Cho,S-K Choi,S Choudhury,J Cochran,L Corona,LM Cremaldi,S Das,F Dattola,De La Cruz-Burelo,SA De La Motte,G De Nardo,M De Nuccio,G De Pietro,R de Sangro,M Destefanis,R Dhamija,A Di Canto,F Di Capua,J Dingfelder,Z Doležal,I Domínguez Jiménez,TV Dong,M Dorigo,K Dort,S Dreyer,S Dubey,G Dujany,P Ecker,M Eliachevitch,D Epifanov,P Feichtinger,T Ferber,D Ferlewicz,T Fillinger,C Finck,G Finocchiaro,A Fodor,F Forti,A Frey,BG Fulsom,A Gabrielli,E Ganiev,M Garcia-Hernandez,R Garg,G Gaudino,V Gaur,A Gaz,A Gellrich,G Ghevondyan,D Ghosh,H Ghumaryan,G Giakoustidis,R Giordano,A Giri,A Glazov,B Gobbo,R Godang,O Gogota,P Goldenzweig,W Gradl,T Grammatico,E Graziani,D Greenwald,Z Gruberová,T Gu,Y Guan,K Gudkova,Y Han,K Hara,T Hara,K Hayasaka,H Hayashii,S Hazra,C Hearty,MT Hedges,A Heidelbach,I Heredia de la Cruz,M Hernández Villanueva,T Higuchi,EC Hill,M Hoek,M Hohmann,P Horak

Journal

arXiv preprint arXiv:2401.02840

Published Date

2024/1/5

The ratio of branching fractions /, where is an electron or muon, is measured using a Belle~II data sample with an integrated luminosity of at the SuperKEKB asymmetric-energy collider. Data is collected at the resonance, and one meson in the decay is fully reconstructed in hadronic decay modes. The accompanying signal meson is reconstructed as using leptonic decays. The normalization decay, , where is an electron or muon, produces the same observable final state particles. The ratio of branching fractions is extracted in a simultaneous fit to two signal-discriminating variables in both channels and yields . This result is consistent with the current world average and with standard model predictions.

Search for a dark leptophilic scalar produced in association with pair in annihilation at center-of-mass energies near 10.58 GeV

Authors

D Biswas,Sw Banerjee,I Adachi,H Aihara,DM Asner,T Aushev,R Ayad,V Babu,P Behera,J Bennett,M Bessner,V Bhardwaj,B Bhuyan,T Bilka,D Bodrov,J Borah,A Bozek,M Bračko,P Branchini,TE Browder,A Budano,M Campajola,D Červenkov,M-C Chang,P Chang,BG Cheon,K Chilikin,HE Cho,K Cho,S-K Choi,Y Choi,S Choudhury,D Cinabro,S Das,G De Nardo,G De Pietro,R Dhamija,F Di Capua,J Dingfelder,Z Doležal,TV Dong,S Dubey,P Ecker,D Epifanov,T Ferber,BG Fulsom,V Gaur,A Garmash,A Giri,P Goldenzweig,E Graziani,Y Guan,K Gudkova,C Hadjivasiliou,K Hayasaka,H Hayashii,S Hazra,MT Hedges,D Herrmann,M Hernández Villanueva,W-S Hou,C-L Hsu,K Inami,G Inguglia,N Ipsita,A Ishikawa,R Itoh,M Iwasaki,WW Jacobs,QP Ji,S Jia,Y Jin,KK Joo,AB Kaliyar,C Kiesling,CH Kim,DY Kim,K-H Kim,YJ Kim,Y-K Kim,P Kodyš,T Konno,A Korobov,S Korpar,P Križan,P Krokovny,M Kumar,K Kumara,Y-J Kwon,Y-T Lai,M Laurenza,SC Lee,D Levit,J Li,LK Li,Y Li,L Li Gioi,J Libby,K Lieret,Y-R Lin,D Liventsev,T Luo,Y Ma,M Masuda,SK Maurya,F Meier,M Merola,F Metzner,K Miyabayashi,R Mizuk,I Nakamura,M Nakao,Z Natkaniec,A Natochii,L Nayak,M Niiyama,NK Nisar,S Nishida,S Ogawa,H Ono,P Pakhlov,G Pakhlova,S Pardi,H Park,J Park,S-H Park,A Passeri,S Patra,S Paul,R Pestotnik,LE Piilonen,T Podobnik,E Prencipe,MT Prim,N Rout,G Russo,S Sandilya,L Santelj,V Savinov,G Schnell,C Schwanda,Y Seino,K Senyo,ME Sevior,W Shan,C Sharma,J-G Shiu,B Shwartz,JB Singh,A Sokolov

Journal

Physical Review D

Published Date

2024/2/5

A dark leptophilic scalar (ϕ L) is a hypothetical particle that couples only to leptons rather than quarks. We report on a search for ϕ L in the e+ e−→ τ+ τ− ϕ L, ϕ L→ ℓ+ ℓ−(ℓ= e, μ) process using 626 fb− 1 of data collected by the Belle experiment near the ϒ (4 S) resonance. We validate the backgrounds with multiple control regions in data, using a novel multiclass multivariate event classifier. In absence of a signal, we quote upper limits at the 90% confidence level on the coupling between ϕ L and leptons. Our bounds, obtained in a blinded approach, are 19% more constraining than the previous limits, averaged over the mass range 0.04≤ m ϕ L≤ 6.5 GeV. We exclude the parameter space below 4 GeV favored by measurement of the anomalous magnetic moment of the muon.

arXiv : Measurement of the Branching Fraction of Decays

Authors

R Aaij,W Kucewicz,X Zhu,I Bachiller Perea,H Pham,G Simi,S Esen,M van Veghel,M Richardson-Slipper,D Johnson,C Lazzeroni,M Barbetti,S Kretzschmar,S Bachmann,L Martinazzoli,H Yin,S Li,A Comerma-Montells,M Waterlaat,A Buonaura,S Libralon,E Eckstein,AM Schertz,M Calvo Gomez,P Di Nezza,A Bertolin,S Joshi,A Boldyrev,T Li,LH Uecker,S Petrucci,M Santimaria,V Sriskaran,C Marin Benito,CY Yu,M Martinelli,S Mokhnenko,Y Amhis,M Schmelling,F Teubert,T Kirn,A Terentev,A Solomin,S Kholodenko,DJ White,C De Angelis,V Coco,P Duda,J Reich,L Dufour,DH Campora Perez,E Ursov,Y Zhang,J Bhom,V Denysenko,X Wang,C Hadjivasiliou,T Senger,V Dedu,L Del Buono,L Mcconnell,P Spradlin,W Duan,N Neufeld,H-P Dembinski,Y Luo,L Fantini,H Mu,P Ilten,B Jost,R Lefèvre,B Pietrzyk,U Marconi,RS Sharma,L Anderlini,L Kravchuk,A Pellegrino,CJ Pawley,I Juszczak,R Schwemmer,DJD Thompson,C Sanchez Gras,V Duk,RH O'Neil,P Gironella Gironell,Z Ajaltouni,H Jage,A Bay,B Mitreska,A Palano,S Ferreres Sole,P-R Li,M Palutan,A Chubykin,E Ejopu,J Mauricio,JL Amey,C Frei,M Feo,A Zharkova,G Casse,S Amato,P De Simone,F Pisani,S Cali,A Ukleja,C Patrignani,EJ Walton,M Pepe Altarelli,T Lin,G Gong,H Miao,A Konoplyannikov,L Pica,P Andreola,E Curras Rivera,P Adlarson,D Brundu,D Lacarrere,F Hemmer,MD Tat,D Saranin,M Franco Sevilla,M De Cian,HN Nur,AD Fernez,X Vilasis-Cardona,A Valassi,A Beck,L Congedo,MK Wilkinson,J Closier,S Monteil,C Lucarelli,BK Jashal,D Riccardi,P Kravchenko,K De Bruyn,FL Liu,JE Blank,CL Da Silva,IR Barbosa,M Rebollo De Miguel,F De Vellis,R Ribatti,W Krzemien,M Frank,T Skwarnicki,L Capriotti,L Henry

Published Date

2024/2/8

The ratio of branching fractions between B0→ J/ψπ0 and B+→ J/ψK∗+ decays is measured with proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb− 1. The measured value is

arXiv : Modification of (3872) and (2) production in Pb collisions at TeV

Authors

Roel Aaij,Shinichi Okamura,Matthew John Bradley,Gregory Ciezarek,Maciej Wojciech Dudek,Paula Collins,Stanislav Luchuk,Nico Kleijne,Wenbin Qian,Ned Francis Howarth,Julio Novoa Fernandez,Jie Wu,Aodhan Tomas Burke,Tomasz Szumlak,Jennifer Clare Smallwood,Serena Maccolini,Andrzej Kupsc,Marcel Merk,Artem Okhotnikov,Paula Garcia Moreno,Alexander Bitadze,Domenico Galli,Zirui Wang,Lucio Anderlini,Pavel Krokovny,Gianfranco Morello,Andrea Merli,Ivan Polyakov,Carmen Giugliano,Pierfrancesco Cifra,Pei-Rong Li,Leonardo Santoro,Guillaume Pietrzyk,Paul Nathaniel Swallow,Giorgia Tonani,Leonid Kravchuk,Tatiana Ovsiannikova,Shuangli Yang,Menglin Xu,Cheuk Ping Wong,Francesca Swystun,Veronika Chobanova,Thomas Kirn,Gaya Benane,Yanxi Wu,Shulei Zhang,Luke George Scantlebury Smead,Niels Tuning,Bogdan Kutsenko,Sebastian Bachmann,Marie Bachmayer,Zhenzi Wang,Mindaugas Sarpis,Carina Trippl,Timothy Evans,Giovanni Punzi,Da Yu Tou,Davide Nicotra,Neville Harnew,Camilla De Angelis,Xiaofan Hu,Izabela Juszczak,Daniel James David Thompson,Stephan Escher,Fionn Caitlin Ros Bishop,Oleg Stenyakin,Marcin Chrzaszcz,Jonathan Edward Davies,Sune Jakobsen,Yuxi Gao,Marius Maehlum Halvorsen,Guido Haefeli,Sanqiang Qu,Christoph Langenbruch,Sergey Barsuk,Florin Maciuc,Alexander Davidson,Marcel Materok,Davide Pinci,Miriam Lucio Martinez,Chenjia Zhang,Alice Biolchini,Radoslav Marchevski,Sigrid Scherl,Yangheng Zheng,Alexandra Paige Rollings,Daria Strekalina,Giacomo Graziani,Nikolay Nikitin,Sara Elizabeth Mitchell,Yuki Fujii,Vladimir Chulikov,Louis Lenard Gerken,Mick Mulder,Michele Atzeni,Sascha Stahl,Giuliana Galati,Sebastian Neubert,Artur Ishteev,Christopher Jones,Alexandru Tudor Grecu,Robbert Erik Geertsema,Mikhail Zavertyaev,Eluned Smith,Gabriele Martelli,Tai-hua Lin,Manuel Guittiere,Anna Danilina,Valeriia Zhovkovska,Jascha Peter Grabowski,Jan-Marc Basels,Matthew Needham,Kunal Garg,Burkhard Schmidt,Christoph Hasse,Thomas Ackernley,Patrik Harri Adlarson,Erika De Lucia,Shuchong Ding,Ivan Belyaev,Edward Brendan Shields,Stefano Petrucci,Xueting Yang,Monica Pepe Altarelli,Anni Kauniskangas,Alexander Leon Gilman,Abolhassan Jawahery,Hengne Li,Bhagyashree Pagare,Claudia Bertella,Luis Miguel Garcia Martin,Alessandra Gioventù,Paul Andre Günther,Sophie Katharina Kretzschmar,Alvaro Gomes,Joshua Ethan Horswill,Matthew Kenzie,Holger Stevens,Desmond Mzamo Shangase,Daniele Passaro,Micol Olocco,Angelo Carbone,Olivier Deschamps,Baasansuren Batsukh,Alexey Boldyrev,Katharina Müller,Philipp Roloff,Josh Bex,Massimiliano Fiorini,Patrick Spradlin

Published Date

2024/2/22

The LHCb collaboration measures production of the exotic hadron χc1 (3872) in proton-nucleus collisions for the first time. Comparison with the charmonium state ψ (2S) suggests that the exotic χc1 (3872) experiences different dynamics in the nuclear medium than conventional hadrons, and comparison with data from protonproton collisions indicates that the presence of the nucleus may modify χc1 (3872) production rates. This is the first measurement of the nuclear modification factor of an exotic hadron.

Search for a resonance in four-muon final states at Belle II

Authors

I Adachi,K Adamczyk,L Aggarwal,H Ahmed,H Aihara,N Akopov,A Aloisio,N Anh Ky,DM Asner,H Atmacan,V Aushev,M Aversano,R Ayad,V Babu,H Bae,S Bahinipati,P Bambade,Sw Banerjee,S Bansal,M Barrett,J Baudot,A Baur,A Beaubien,F Becherer,J Becker,JV Bennett,FU Bernlochner,V Bertacchi,M Bertemes,E Bertholet,M Bessner,S Bettarini,B Bhuyan,F Bianchi,T Bilka,S Bilokin,D Biswas,A Bobrov,D Bodrov,A Bolz,A Bozek,M Bračko,P Branchini,TE Browder,A Budano,S Bussino,M Campajola,L Cao,G Casarosa,C Cecchi,J Cerasoli,M-C Chang,P Chang,R Cheaib,P Cheema,BG Cheon,K Chilikin,K Chirapatpimol,H-E Cho,K Cho,S-J Cho,S-K Choi,S Choudhury,L Corona,LM Cremaldi,S Das,F Dattola,De La Cruz-Burelo,SA De La Motte,G De Nardo,M De Nuccio,G De Pietro,R de Sangro,M Destefanis,R Dhamija,A Di Canto,F Di Capua,J Dingfelder,Z Doležal,TV Dong,M Dorigo,K Dort,S Dreyer,S Dubey,G Dujany,P Ecker,M Eliachevitch,D Epifanov,P Feichtinger,T Ferber,D Ferlewicz,T Fillinger,C Finck,G Finocchiaro,A Fodor,F Forti,A Frey,BG Fulsom,A Gabrielli,E Ganiev,M Garcia-Hernandez,R Garg,G Gaudino,V Gaur,A Gaz,A Gellrich,G Ghevondyan,D Ghosh,H Ghumaryan,G Giakoustidis,R Giordano,A Giri,A Glazov,B Gobbo,R Godang,O Gogota,P Goldenzweig,W Gradl,T Grammatico,E Graziani,D Greenwald,Z Gruberová,T Gu,K Gudkova,S Halder,Y Han,T Hara,H Hayashii,S Hazra,C Hearty,MT Hedges,A Heidelbach,I Heredia de la Cruz,M Hernández Villanueva,T Higuchi,M Hoek,M Hohmann,P Horak,C-L Hsu,T Humair,T Iijima,G Inguglia,N Ipsita,A Ishikawa,R Itoh,M Iwasaki,P Jackson,WW Jacobs,E-J Jang,QP Ji

Journal

arXiv preprint arXiv:2403.02841

Published Date

2024/3/5

We report on a search for a resonance decaying to a pair of muons in events in the 0.212-9.000 GeV/ mass range, using 178 fb of data collected by the BelleII experiment at the SuperKEKB collider at a center of mass energy of 10.58 GeV. The analysis probes two different models of beyond the standard model: a vector boson in the model and a muonphilic scalar. We observe no evidence for a signal and set exclusion limits at the 90\% confidence level on the products of cross section and branching fraction for these processes, ranging from 0.046 fb to 0.97 fb for the model and from 0.055 fb to 1.3 fb for the muonphilic scalar model. For masses below 6 GeV/, the corresponding constraints on the couplings of these processes to the standard model range from 0.0008 to 0.039 for the model and from 0.0018 to 0.040 for the muonphilic scalar model. These are the first constraints on the muonphilic scalar from a dedicated search.

Tracking of charged particles with nanosecond lifetimes at LHCb

Authors

Roel Aaij,Ahmed Sameh Wagih Abdelmotteleb,C Abellan Beteta,F Abudinén,Thomas Ackernley,JA Adams,AA Adefisoye,Bernardo Adeva,Marco Adinolfi,P Adlarson,Christina Agapopoulou,Christine Angela Aidala,Ziad Ajaltouni,Simon Akar,Kazuyoshi Akiba,Pietro Albicocco,Johannes Albrecht,Federico Alessio,Michael Alexander,Zakariya Aliouche,P Alvarez Cartelle,Renaud Amalric,Sandra Amato,Jake Lewis Amey,Yasmine Amhis,Liupan An,Lucio Anderlini,Martin Andersson,Aleksei Andreianov,Pasquale Andreola,Mirco Andreotti,Dimitra Andreou,Alessia Anelli,Dong Ao,Flavio Archilli,Matteo Argenton,S Arguedas Cuendis,Alexander Artamonov,Marina Artuso,Elie Aslanides,Michele Atzeni,Benjamin Audurier,David Bacher,I Bachiller Perea,Sebastian Bachmann,Marie Bachmayer,JJ Back,P Baladron Rodriguez,Vladislav Balagura,Wander Baldini,Haoran Bao,J Leite,Matteo Barbetti,Ivanildo Rui Barbosa,RJ Barlow,Mikhail Barnyakov,Sergey Barsuk,William Barter,Matteo Bartolini,Justin Bartz,Fedor Baryshnikov,Jan-Marc Basels,Giovanni Bassi,Baasansuren Batsukh,Aurelio Bay,Anja Beck,Maik Becker,Franco Bedeschi,IB Bediaga,Samuel Belin,Violaine Bellee,Konstantin Belous,Ilia Belov,Ivan Belyaev,Gaya Benane,Giovanni Bencivenni,Eli Ben-Haim,Alexander Berezhnoy,Roland Bernet,S Bernet Andres,Alessandro Bertolin,Christopher Betancourt,Federico Betti,Josh Bex,Ia Bezshyiko,Jihyun Bhom,Martin Stefan Bieker,Nicolo Vladi Biesuz,Pierre Billoir,Alice Biolchini,Matthew Birch,Fionn Caitlin Ros Bishop,Alexander Bitadze,Andrea Bizzeti,Thomas Blake,Frederic Blanc,Jonah Evan Blank,Steven Blusk,Vladimir Bocharnikov,Julian Alexander Boelhauve,O Boente Garcia,Thomas Boettcher,Abhishek Bohare,Alexey Boldyrev,CS Bolognani,Riccardo Bolzonella,Nikolay Bondar,Federica Borgato,Silvia Borghi,Martino Borsato,Jozef Tomasz Borsuk,Sonia Amina Bouchiba,TJV Bowcock,Alexandre Boyer,Concezio Bozzi,Matthew John Bradley,A Brea Rodriguez,Nils Breer,Jolanta Brodzicka,A Brossa Gonzalo,J Brown,Davide Brundu,Emma Buchanan,Annarita Buonaura,Laura Buonincontri,Aodhan Tomas Burke,Christopher Burr,Anatoly Butkevich,Jordy Sebastiaan Butter,Jan Buytaert,Wiktor Byczynski,Sandro Cadeddu,Hao Cai,Roberto Calabrese,S Calderon Ramirez,Lukas Calefice,Stefano Cali,Marta Calvi,M Calvo Gomez,P Camargo Magalhaes,JI Bouzas,Pierluigi Campana,DH Perez,AF Quezada,Simone Capelli,Lorenzo Capriotti,R Caravaca-Mora,Angelo Carbone,L Carcedo Salgado,Roberta Cardinale

Journal

arXiv preprint arXiv:2403.09483

Published Date

2024/3/14

A method is presented to reconstruct charged particles with lifetimes between 10 ps and 10 ns, which considers a combination of their decay products and the partial tracks created by the initial charged particle. Using the baryon as a benchmark, the method is demonstrated with simulated events and proton-proton collision data at TeV, corresponding to an integrated luminosity of 2.0 fb collected with the LHCb detector in 2018. Significant improvements in the angular resolution and the signal purity are obtained. The method is implemented as part of the LHCb Run 3 event trigger in a set of requirements to select detached hyperons. This is the first demonstration of the applicability of this approach at the LHC, and the first to show its scaling with instantaneous luminosity.

Search for rare transitions at Belle

Authors

Belle II Collaborations,I Adachi,L Aggarwal,H Aihara,N Akopov,A Aloisio,S Al Said,DM Asner,H Atmacan,V Aushev,M Aversano,R Ayad,V Babu,H Bae,S Bahinipati,P Bambade,Sw Banerjee,S Bansal,M Barrett,J Baudot,A Beaubien,F Becherer,J Becker,K Belous,JV Bennett,FU Bernlochner,V Bertacchi,M Bertemes,E Bertholet,M Bessner,S Bettarini,F Bianchi,L Bierwirth,T Bilka,D Biswas,A Bobrov,D Bodrov,A Bolz,J Borah,A Bozek,M Bračko,P Branchini,RA Briere,TE Browder,A Budano,S Bussino,M Campajola,L Cao,G Casarosa,C Cecchi,J Cerasoli,M-C Chang,P Chang,R Cheaib,P Cheema,C Chen,BG Cheon,K Chilikin,K Chirapatpimol,H-E Cho,K Cho,S-J Cho,S-K Choi,Y Choi,S Choudhury,J Cochran,L Corona,S Das,F Dattola,De La Cruz-Burelo,SA De La Motte,G de Marino,G De Nardo,G De Pietro,R de Sangro,M Destefanis,S Dey,R Dhamija,F Di Capua,J Dingfelder,Z Doležal,TV Dong,M Dorigo,K Dort,D Dossett,S Dreyer,S Dubey,K Dugic,G Dujany,P Ecker,D Epifanov,P Feichtinger,T Ferber,D Ferlewicz,T Fillinger,C Finck,G Finocchiaro,A Fodor,F Forti,BG Fulsom,A Gabrielli,E Ganiev,M Garcia-Hernandez,R Garg,G Gaudino,V Gaur,A Gellrich,G Ghevondyan,D Ghosh,H Ghumaryan,G Giakoustidis,R Giordano,A Giri,A Glazov,B Gobbo,R Godang,O Gogota,P Goldenzweig,T Grammatico,S Granderath,E Graziani,D Greenwald,Z Gruberová,T Gu,Y Guan,K Gudkova,Y Han,T Hara,K Hayasaka,H Hayashii,S Hazra,MT Hedges,A Heidelbach,I Heredia de la Cruz,M Hernández Villanueva,T Higuchi,M Hoek,M Hohmann,P Horak,C-L Hsu,T Humair,T Iijima,K Inami,G Inguglia,N Ipsita,A Ishikawa,R Itoh,M Iwasaki,WW Jacobs,E-J Jang

Journal

arXiv preprint arXiv:2404.08133

Published Date

2024/4/11

We present the results of a search for the flavor-changing neutral-current rare decays and using a fb data sample that contains events. The data were collected at the resonance with the Belle detector at the KEKB asymmetric-energy collider. We find no evidence for signal and set upper limits on branching fractions at the confidence level in the range depending on the decay channel. The obtained limits are the world's best results. This is the first search for the channels and .

Measurement of production in collisions at TeV at LHCb

Authors

R Aaij,ASW Abdelmotteleb,C Abellan Beteta,F Abudinén,T Ackernley,B Adeva,M Adinolfi,P Adlarson,H Afsharnia,C Agapopoulou,CA Aidala,Z Ajaltouni,S Akar,K Akiba,P Albicocco,J Albrecht,F Alessio,M Alexander,A Alfonso Albero,Z Aliouche,P Alvarez Cartelle,R Amalric,S Amato,JL Amey,Y Amhis,L An,L Anderlini,M Andersson,A Andreianov,M Andreotti,D Andreou,D Ao,F Archilli,A Artamonov,M Artuso,E Aslanides,M Atzeni,B Audurier,IB Bachiller Perea,S Bachmann,M Bachmayer,JJ Back,A Bailly-reyre,P Baladron Rodriguez,V Balagura,W Baldini,J Baptista de Souza Leite,M Barbetti,RJ Barlow,S Barsuk,W Barter,M Bartolini,F Baryshnikov,JM Basels,G Bassi,B Batsukh,A Battig,A Bay,A Beck,M Becker,F Bedeschi,IB Bediaga,A Beiter,S Belin,V Bellee,K Belous,I Belov,I Belyaev,G Benane,G Bencivenni,E Ben-Haim,A Berezhnoy,R Bernet,S Bernet Andres,D Berninghoff,HC Bernstein,C Bertella,A Bertolin,C Betancourt,F Betti,Ia Bezshyiko,S Bhasin,J Bhom,L Bian,MS Bieker,NV Biesuz,P Billoir,A Biolchini,M Birch,FCR Bishop,A Bitadze,A Bizzeti,MP Blago,T Blake,F Blanc,JE Blank,S Blusk,D Bobulska,JA Boelhauve,O Boente Garcia,T Boettcher,A Boldyrev,CS Bolognani,R Bolzonella,N Bondar,F Borgato,S Borghi,M Borsato,JT Borsuk,SA Bouchiba,TJV Bowcock,A Boyer,C Bozzi,MJ Bradley,S Braun,A Brea Rodriguez,J Brodzicka,A Brossa Gonzalo,J Brown,D Brundu,A Buonaura,L Buonincontri,AT Burke,C Burr,A Bursche,A Butkevich,JS Butter,J Buytaert,W Byczynski,S Cadeddu,H Cai,R Calabrese,L Calefice,S Cali,M Calvi,M Calvo Gomez,P Campana,DH Campora Perez,AF Campoverde Quezada,S Capelli,L Capriotti,A Carbone,R Cardinale,A Cardini,P Carniti,L Carus,A Casais Vidal,R Caspary,G Casse,M Cattaneo

Journal

Physical Review C

Published Date

2024/4/1

A study of prompt Ξ c+ production in proton-lead collisions is performed with the LHCb experiment at a center-of-mass energy per nucleon pair of 8.16 TeV in 2016 in p Pb and Pb p collisions with an estimated integrated luminosity of approximately 12.5 and 17.4 nb− 1, respectively. The Ξ c+ production cross section, as well as the Ξ c+ to Λ c+ production cross-section ratio, are measured as a function of the transverse momentum and rapidity and compared to the latest theory predictions. The forward-backward asymmetry is also measured as a function of the Ξ c+ transverse momentum. The results provide strong constraints on theoretical calculation and are a unique input for hadronization studies in different collision systems.

See List of Professors in Pavel Krokovny University(Novosibirsk State University)