Measurement of the nuclear modification factor of b-jets in 5.02 TeV Pb+Pb collisions with the ATLAS detector

ATLAS Collaboration

doi:10.1140/epjc/s10052-023-11427-9

Measurement of the nuclear modification factor of b-jets in 5.02 TeV Pb+Pb collisions with the ATLAS detector

ATLAS Collaboration

University of California at Berkeley
iThemba Labs
Department of Physics
University of South Africa
University of Zululand
Faculté Des Sciences-Semlalia
Institute of Applied Physics
Mohammed VI Polytechnic University
State University of Rio de Janeiro
New York University
University of Georgia
European Organization for Nuclear Research
Aix-Marseille Université
University of Oklahoma
University of Massachusetts Amherst
Georg August Universität Göttingen
Brookhaven National Laboratory Physics Department
University Mohammed V in Rabat
Tel Aviv University
Technion - Israel Institute of Technology
New York University
Pontificia Universidad Católica de Chile
Sezione INFN di Roma La Sapienza
ICTP
King's College London
Johannes Gutenberg University
Laboratoire d’Annecy-Le-Vieux de Physique des Particules (CNRS/IN2P3/LAPP)
Univ of Mining and Metallurgy
University of Toronto
Brandeis University
USA
Istanbul University
University of Geneva
Rutherford Appleton Laboratory
University of California at Santa Cruz
Dept. d'Estructura I Constituents De La Matèria and IFAE
Istituto Nazionale di Fisica Nucleare, Sezione di Pavia
University of Pavia
'Al. I. Cuza' University
University of Granada
Azerbaijan Academy of Sciences
McGill University and Génome Québec Innovation Centre
Deutsches Elektronen-Synchrotron (DESY)
INFN Sezione di Roma Tor Vergata
University of Rome Tor Vergata
Weizmann Institute of Science Israel
Lund University
Columbia University
Istituto Nazionale di Fisica Nucleare, Sezione di Bologna
University of Victoria
INFN, Laboratori Nazionali Di Frascati
National University of La Plata
University of Edinburgh
Horia Hulubei National Institute of Physics and Nuclear Engineering
National Technical University of Athens
University of Amsterdam
Argonne National Laboratory
Czech Technical University in Prague
Academia Sinica Taipei
INFN Sezione di Milano
University of Sussex
University of Birmingham
INFN Sezione di Napoli
Università di Napoli Federico II
University of Washington
Universidad Autónoma de Madrid
Federal University of Rio de Janeiro
University of Munich
University of Michigan, Ann Arbor
Laboratório de Instrumentacão e Física Experimental de Partículas
University of Valencia
University of Oslo
University of Sheffield
University Paris-Sud
University of Texas at Austin
University of Bern
Stockholm University
Oskar Klein Centre
University of Milan
University of Athens
Lawrence Livermore National Laboratory
SNS and INFN
Oklahoma State University
Lawrence Berkeley National Laboratory
High Energy Accelerator Research Organization (KEK)
Humboldt-Universität zu Berlin
Universidade Federal de Juiz de Fora
Duke University
University of Liverpool
Université de Montréal
University of Freiburg
Universita La Sapienza
Nagoya University
Ochanomizu University
University of Tokyo
Broad Institute of Harvard University
Uppsala University
University Mohammed I
Comenius University
University of Cape Town
University of Illinois at Urbana-Champaign
Shandong University
Bergische Universität Wuppertal
Nanjing University
TRIUMF
Aristotle University of Thessaloniki
University of Thessaly
Carleton University
Yale University
University of Belgrade
University of Texas at Arlington
University of Sydney
Charles University
Heidelberg University
University of Cambridge
Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences
University of Pittsburgh
University of Bonn
School of Physics
University of Genova
Sezione INFN di Genova
University College London
Max-Planck-Institut für Physik
University of Oregon
Stanford University
Joint Laboratory of Optics
University of Manchester
University of Science and Technology of China
University of Oxford
Institute of High Energy Physics Chinese Academy of Science
Department of Physics, Lancaster University
pro3dure medical GmbH
Sez. di Roma Tre
An-Najah National University
University of Glasgow
University of Siegen
Bogazici University
Centre de Recherche Institut du Cerveau et de la Moelle
Tufts University
University of Fribourg
University of Warwick
Istinye University
SUNY
United Arab Emirates University
Hassan II University of Casablanca
University of Arizona
Institut de Neurosciences de la Timone, Centre National de la Recherche Scientifique - Aix-Marseille University
University of London
Technische Universität Dresden
Southern Methodist University
Queen Mary University of London
University of Johannesburg
University of Würzburg
University of Colorado Boulder
University of Pisa
University of Gaziantep
DIBINEM, Alma Mater Studiorum, University of Bologna
University of Wisconsin-Madison
University of Louisville
LAIC, Université d'Auvergne
Ohio State University
Shanghai Jiao Tong University
Universidad Técnica Federico Santa María
University of Adelaide
Institute of Experimental Physics Slovak Academy of Sciences
University of Bergen
Simon Fraser University
Boston University
Michigan State University
Justus-Liebig-Universität Gießen
University of Chinese Academy of Sciences
Ankara University School of Medicine
Indiana University Bloomington
Niels Bohr Institutet
Iowa University
Universite della Calabria
Westmont College, Santa Barbara
Radboud University Nijmegen
Universitat Autònoma de Barcelona
PT Government Associated Laboratory, University of Minho
Istituto Nazionale di Fisica Nucleare, Sezione di Lecce
University of Salento
Tbilisi State University
Tsinghua University
Collaborative Innovation Center of Quantum Matter
Chinese University of Hong Kong
National Tsing Hua University
University of the Witwatersrand, Johannesburg
Institute of Physics of the Czech Academy of Sciences
Univ. of Ljubljana
Ben Gurion University of the Negev
Univ.́ degli Studi di Udine
University of Grenoble Alpes
Instituto Superior Técnico
Università di Napoli Parthenope
University of British Columbia
Institute of Particle Physics
INFN-TIFPA
University of Trento
Fondazione Bruno Kessler
University of California, Irvine
University of Pennsylvania School of Arts and Sciences
Ciudad Universitaria Pab. 1
York University
Millennium Institute for Subatomic physics at high energy frontier (SAPHIR)
University of São Paulo
Université Ibn-Tofail
NCSR Demokritos
University of Texas at Dallas
Coimbra University Pó lo II
City Coll. City Univ. of New York
National Institute of Physics, College of Science, University of the Philippines, Diliman
University of Chicago
Jagiellonian University
University of Alberta
University of the Aegean
Centro Fermi
University of Lisboa
West University in Timisoara
California State University
California State University-East Bay
Technology Department
University of New Mexico
Tsukuba University
Shinshu University
Tokyo Institute of Technology
Iowa State University
Kobe University
Osaka University
University Politehnica of Bucharest
University of Hong Kong
Yeditepe University
Waseda University
Iv. Javakhishvili Tbilisi State University
Ilia State University (ISU)
Universidad de Tarapacá
Kyushu University
University of Innsbruck
Faculty of Science
University Andrés Bello
Hellenic Open University
Center for Autonomous Systems
Beijing University
Hong Kong University of Science and Technology
City College of New York
Centro de Física Nuclear Universidade de Lisboa
California State University, Sacramento
Universidad Antonio Nariño
Transilvania University of Brasov
National Institute for R&D of Isotopic and Molecular Technologies
Universidad Nacional de Colombia
Louisiana Tech University
University of Sharjah
TOBB University of Economics and Technology
Universität Hamburg
Kyoto University of Education
Universidad de la Serena in la Serena

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

This paper presents a measurement of b-jet production in Pb+Pb and pp collisions at sNN=5.02 TeV with the ATLAS detector at the LHC. The measurement uses 260 pb ^{- 1} of pp collisions collected in 2017 and 1.4 nb ^{- 1} of Pb+Pb collisions collected in 2018. In both collision systems, jets are reconstructed via the anti- k_t algorithm. The b-jets are identified from a sample of jets containing muons from the semileptonic decay of b-quarks using template fits of the muon momentum relative to the jet axis. In pp collisions, b-jets are reconstructed for radius parameters R= 0.2 and R= 0.4 , and only R= 0.2 jets are used in Pb+Pb collisions. For comparison, inclusive R= 0.2 jets are also measured using 1.7 nb ^{- 1} of Pb+Pb collisions collected in 2018 and the same pp collision data as the b-jet measurement. The nuclear modification factor, R_AA , is calculated for both b-jets and inclusive jets with R= 0.2 over the transverse momentum range of 80–290 GeV. The nuclear modification factor for b-jets decreases from peripheral to central collisions. The ratio of the b-jet R_AA to inclusive jet R_AA is also presented and suggests that the R_AA for b-jets is larger than that for inclusive jets in central Pb+Pb collisions. The measurements are compared with theoretical calculations and suggest a role for mass and colour-charge effects in partonic energy loss in heavy-ion collisions.

Original language	English
Article number	438
Journal	European Physical Journal C
Volume	83
Issue number	5
DOIs	https://doi.org/10.1140/epjc/s10052-023-11427-9
State	Published - May 2023
Externally published	Yes

Access to Document

10.1140/epjc/s10052-023-11427-9

Cite this

@article{be16a69a76c241b2b6c3c99d5989b0f9,

title = "Measurement of the nuclear modification factor of b-jets in 5.02 TeV Pb+Pb collisions with the ATLAS detector",

abstract = "This paper presents a measurement of b-jet production in Pb+Pb and pp collisions at sNN=5.02 TeV with the ATLAS detector at the LHC. The measurement uses 260 pb - 1 of pp collisions collected in 2017 and 1.4 nb - 1 of Pb+Pb collisions collected in 2018. In both collision systems, jets are reconstructed via the anti- kt algorithm. The b-jets are identified from a sample of jets containing muons from the semileptonic decay of b-quarks using template fits of the muon momentum relative to the jet axis. In pp collisions, b-jets are reconstructed for radius parameters R= 0.2 and R= 0.4 , and only R= 0.2 jets are used in Pb+Pb collisions. For comparison, inclusive R= 0.2 jets are also measured using 1.7 nb - 1 of Pb+Pb collisions collected in 2018 and the same pp collision data as the b-jet measurement. The nuclear modification factor, RAA , is calculated for both b-jets and inclusive jets with R= 0.2 over the transverse momentum range of 80–290 GeV. The nuclear modification factor for b-jets decreases from peripheral to central collisions. The ratio of the b-jet RAA to inclusive jet RAA is also presented and suggests that the RAA for b-jets is larger than that for inclusive jets in central Pb+Pb collisions. The measurements are compared with theoretical calculations and suggest a role for mass and colour-charge effects in partonic energy loss in heavy-ion collisions.",

author = "\{ATLAS Collaboration\} and G. Aad and B. Abbott and Abbott, \{D. C.\} and K. Abeling and Abidi, \{S. H.\} and A. Aboulhorma and H. Abramowicz and H. Abreu and Y. Abulaiti and Hoffman, \{A. C.Abusleme\} and Acharya, \{B. S.\} and B. Achkar and L. Adam and Bourdarios, \{C. Adam\} and L. Adamczyk and L. Adamek and Addepalli, \{S. V.\} and J. Adelman and A. Adiguzel and S. Adorni and T. Adye and Affolder, \{A. A.\} and Y. Afik and Agaras, \{M. N.\} and J. Agarwala and A. Aggarwal and C. Agheorghiesei and Aguilar-Saavedra, \{J. A.\} and A. Ahmad and F. Ahmadov and Ahmed, \{W. S.\} and X. Ai and G. Aielli and I. Aizenberg and M. Akbiyik and {\AA}kesson, \{T. P.A.\} and Akimov, \{A. V.\} and Khoury, \{K. Al\} and Alberghi, \{G. L.\} and J. Albert and P. Albicocco and Verzini, \{M. J.Alconada\} and S. Alderweireldt and M. Aleksa and Aleksandrov, \{I. N.\} and C. Alexa and T. Alexopoulos and A. Alfonsi and L. Heinrich and E. Kourlitis",

note = "Publisher Copyright: {\textcopyright} 2023, CERN for the benefit of the ATLAS collaboration.",

year = "2023",

month = may,

doi = "10.1140/epjc/s10052-023-11427-9",

language = "English",

volume = "83",

journal = "European Physical Journal C",

issn = "1434-6044",

publisher = "Springer Nature",

number = "5",

}

TY - JOUR

T1 - Measurement of the nuclear modification factor of b-jets in 5.02 TeV Pb+Pb collisions with the ATLAS detector

AU - ATLAS Collaboration

AU - Aad, G.

AU - Abbott, B.

AU - Abbott, D. C.

AU - Abeling, K.

AU - Abidi, S. H.

AU - Aboulhorma, A.

AU - Abramowicz, H.

AU - Abreu, H.

AU - Abulaiti, Y.

AU - Hoffman, A. C.Abusleme

AU - Acharya, B. S.

AU - Achkar, B.

AU - Adam, L.

AU - Bourdarios, C. Adam

AU - Adamczyk, L.

AU - Adamek, L.

AU - Addepalli, S. V.

AU - Adelman, J.

AU - Adiguzel, A.

AU - Adorni, S.

AU - Adye, T.

AU - Affolder, A. A.

AU - Afik, Y.

AU - Agaras, M. N.

AU - Agarwala, J.

AU - Aggarwal, A.

AU - Agheorghiesei, C.

AU - Aguilar-Saavedra, J. A.

AU - Ahmad, A.

AU - Ahmadov, F.

AU - Ahmed, W. S.

AU - Ai, X.

AU - Aielli, G.

AU - Aizenberg, I.

AU - Akbiyik, M.

AU - Åkesson, T. P.A.

AU - Akimov, A. V.

AU - Khoury, K. Al

AU - Alberghi, G. L.

AU - Albert, J.

AU - Albicocco, P.

AU - Verzini, M. J.Alconada

AU - Alderweireldt, S.

AU - Aleksa, M.

AU - Aleksandrov, I. N.

AU - Alexa, C.

AU - Alexopoulos, T.

AU - Alfonsi, A.

AU - Heinrich, L.

AU - Kourlitis, E.

PY - 2023/5

Y1 - 2023/5

N2 - This paper presents a measurement of b-jet production in Pb+Pb and pp collisions at sNN=5.02 TeV with the ATLAS detector at the LHC. The measurement uses 260 pb - 1 of pp collisions collected in 2017 and 1.4 nb - 1 of Pb+Pb collisions collected in 2018. In both collision systems, jets are reconstructed via the anti- kt algorithm. The b-jets are identified from a sample of jets containing muons from the semileptonic decay of b-quarks using template fits of the muon momentum relative to the jet axis. In pp collisions, b-jets are reconstructed for radius parameters R= 0.2 and R= 0.4 , and only R= 0.2 jets are used in Pb+Pb collisions. For comparison, inclusive R= 0.2 jets are also measured using 1.7 nb - 1 of Pb+Pb collisions collected in 2018 and the same pp collision data as the b-jet measurement. The nuclear modification factor, RAA , is calculated for both b-jets and inclusive jets with R= 0.2 over the transverse momentum range of 80–290 GeV. The nuclear modification factor for b-jets decreases from peripheral to central collisions. The ratio of the b-jet RAA to inclusive jet RAA is also presented and suggests that the RAA for b-jets is larger than that for inclusive jets in central Pb+Pb collisions. The measurements are compared with theoretical calculations and suggest a role for mass and colour-charge effects in partonic energy loss in heavy-ion collisions.

AB - This paper presents a measurement of b-jet production in Pb+Pb and pp collisions at sNN=5.02 TeV with the ATLAS detector at the LHC. The measurement uses 260 pb - 1 of pp collisions collected in 2017 and 1.4 nb - 1 of Pb+Pb collisions collected in 2018. In both collision systems, jets are reconstructed via the anti- kt algorithm. The b-jets are identified from a sample of jets containing muons from the semileptonic decay of b-quarks using template fits of the muon momentum relative to the jet axis. In pp collisions, b-jets are reconstructed for radius parameters R= 0.2 and R= 0.4 , and only R= 0.2 jets are used in Pb+Pb collisions. For comparison, inclusive R= 0.2 jets are also measured using 1.7 nb - 1 of Pb+Pb collisions collected in 2018 and the same pp collision data as the b-jet measurement. The nuclear modification factor, RAA , is calculated for both b-jets and inclusive jets with R= 0.2 over the transverse momentum range of 80–290 GeV. The nuclear modification factor for b-jets decreases from peripheral to central collisions. The ratio of the b-jet RAA to inclusive jet RAA is also presented and suggests that the RAA for b-jets is larger than that for inclusive jets in central Pb+Pb collisions. The measurements are compared with theoretical calculations and suggest a role for mass and colour-charge effects in partonic energy loss in heavy-ion collisions.

UR - https://www.scopus.com/pages/publications/85160422771

U2 - 10.1140/epjc/s10052-023-11427-9

DO - 10.1140/epjc/s10052-023-11427-9

M3 - Article

AN - SCOPUS:85160422771

SN - 1434-6044

VL - 83

JO - European Physical Journal C

JF - European Physical Journal C

IS - 5

M1 - 438

ER -

Measurement of the nuclear modification factor of b-jets in 5.02 TeV Pb+Pb collisions with the ATLAS detector

Abstract

Access to Document

Other files and links

Fingerprint

Cite this