Comparison of Fragmentation Functions for Jets Dominated by Light Quarks and Gluons from pp and Pb+Pb Collisions in ATLAS

ATLAS Collaboration

doi:10.1103/PhysRevLett.123.042001

Comparison of Fragmentation Functions for Jets Dominated by Light Quarks and Gluons from pp and Pb+Pb Collisions in ATLAS

ATLAS Collaboration

Mohamed I University
Aix-Marseille Université
University of Oklahoma
Azerbaijan National Academy of Sciences
Université Paris-Saclay
Royal Holloway University of London
University of Toronto
University of Copenhagen
University of Sussex
Tel Aviv University
Technion-Israel Institute of Technology
Argonne National Laboratory
National Institute for Nuclear Physics
Abdus Salam International Centre for Theoretical Physics
The University of Tokyo
AGH University of Science and Technology
Northern Illinois University
Ludwig Maximilian University of Munich
Bogazici University
Rutherford Appleton Laboratory
University of California at Santa Cruz
Alexandru Ioan Cuza University of Iaşi
Laboratório de Instrumentação e Física Experimental de Partículas
University of Granada
NOVA University Lisbon
Joint Institute for Nuclear Research
University of Rome Tor Vergata
Kyoto University
Lund University
University of Geneva
RAS - P.N. Lebedev Physics Institute
University of Bologna
University of Victoria BC
Consejo Nacional de Investigaciones Científicas y Técnicas
Radboud University Nijmegen
CERN
Horia Hulubei National Institute of Physics and Nuclear Engineering
National Technical University of Athens
Czech Technical University in Prague
The University of Chicago
University of Washington
University of Oregon
University of Birmingham
University of Naples Federico II
University of Glasgow
University of Valencia
Lawrence Berkeley National Laboratory
Universidade Federal do Rio de Janeiro
University of Oxford
Brandeis University
University of Michigan, Ann Arbor
University of Coimbra
German Electron Synchrotron
University of Sheffield
Université Paris-Saclay
University of Texas at Austin
Heidelberg University
University of Bern
University of Milan
IN2P3 - Institut National de Physique Nucléaire et de Physique Des Particules
University of Amsterdam
Columbia University
Novosibirsk State University
University of California at Irvine
High Energy Accelerator Research Organization, Tsukuba
Michigan State University
Duke University
University of Montreal
University of Iowa
Queen Mary University of London
University of Cambridge
University of Bonn
Russian Research Centre Kurchatov Institute
Johannes Gutenberg University Mainz
Uppsala University
Brookhaven National Laboratory
Comenius University
University of Cape Town
University of Illinois
University of Siegen
University of Science and Technology of China
CAS - Institute of High Energy Physics
University of Salento
University of Rome La Sapienza
Cracow
Simon Fraser University
Yale University
Louisiana Tech University
Weizmann Institute of Science
University of Pennsylvania School of Arts and Sciences
University of Wisconsin-Madison
University of Wuppertal
University of Melbourne
University of Genoa
Max Planck Institute for Physics (Werner Heisenberg Institute)
SLAC National Accelerator Laboratory
Shanghai Jiao Tong University
Universidad Autónoma de Madrid
Lancaster University
Mohammed V University in Rabat
Ohio State University
Sorbonne Université
Tufts University
University of Göttingen
University of Freiburg
Gaziantep University
Bahcesehir University
Stony Brook University
University College London
Carleton University
National and Kapodistrian University of Athens
Moscow Engineering Physics Institute
University of Hassan II Casablanca
National Center for Energy, Nuclear Science and Technology
Université Grenoble Alpes
University of Arizona
University of Massachusetts
Stockholm University
Oskar Klein Centre
University of Manchester
University of Pittsburgh
Humboldt University of Berlin
University of Pisa
Technische Universität Dresden
Boston University
Pontificia Universidad Católica de Chile
Lomonosov Moscow State University
Institute for High Energy Physics
The University of Hong Kong
Hong Kong University of Science and Technology
Institute for High Energy Physics
Universidad de Buenos Aires
University of Johannesburg
University of Texas at Arlington
Tokyo Metropolitan University
Universidad Técnica Federico Santa Maria
Slovak Academy of Sciences
University of Bergen
University of Oslo
University of Liverpool
TU Dortmund University
Academia Sinica - Institute of Physics
SUNY Albany
Ankara University
Indiana University Bloomington
University of Calabria
Oklahoma State University
Charles University
University of Minho
Istanbul Bilgi University
Roma Tre University
Universidade Federal de Juiz de Fora
Harvard University
Chinese University of Hong Kong
Tbilisi State University
TRIUMF
Moscow Institute of Physics and Technology
Iowa State University
Nanjing University
Tsinghua University
Kobe University
University of Chinese Academy of Sciences
National Tsing Hua University
Aristotle University of Thessaloniki
Czech Academy of Sciences
McGill University
Palacký University Olomouc
University of Ljubljana
University of Edinburgh
University of Udine
University of British Columbia
New York University
Shandong University
University of Alberta
Universidade Federal de São João del-Rei
Universidade de São Paulo
Justus Liebig University Giessen
University of Adelaide
Cadi Ayyad University
University of Warwick
University of Pavia
Southern Methodist University
INFN-TIFPA
University of Trento
Nagasaki Institute of Applied Science
University of Lisbon
West University of Timisoara
University of New Mexico
University of Tsukuba
A. Alikhanian Yerevan Institute of Physics
University of Würzburg
Belarus Academy of Sciences
Shinshu University
University of the Witwatersrand
Osaka University
Nagoya University
Belarusian State University
Tokyo Institute of Technology
University of Texas at Dallas
Innsbruck Medical University
Ivane Javakhishvili Tbilisi State University
Waseda University
York University
KTH Royal Institute of Technology
Kyushu University
Tomsk State University
University of Belgrade
Istanbul Aydin University
University of Sydney
Universidad Antonio Nariño
Hiroshima Institute of Technology
Okayama University
Jagiellonian University in Kraków
National Institute for Research and Development of Isotopic and Molecular Technologies
University Politehnica of Bucharest
TOBB University of Economics and Technology
Kyoto University of Education
Transilvania University of Brasov

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58 Citations (Scopus)

Abstract

Charged-particle fragmentation functions for jets azimuthally balanced by a high-transverse-momentum, prompt, isolated photon are measured in 25 pb-1 of pp and 0.49 nb-1 of Pb+Pb collision data at 5.02 TeV per nucleon pair recorded with the ATLAS detector at the Large Hadron Collider. The measurements are compared to predictions of Monte Carlo generators and to measurements of inclusively selected jets. In pp collisions, a different jet fragmentation function in photon-tagged events from that in inclusive jet events arises from the difference in fragmentation between light quarks and gluons. The ratios of the fragmentation functions in Pb+Pb events to that in pp events are used to explore the parton color-charge dependence of jet quenching in the hot medium. In relatively peripheral collisions, fragmentation functions exhibit a similar modification pattern for photon-tagged and inclusive jets. However, photon-tagged jets are observed to have larger modifications than inclusive jets in central Pb+Pb events.

Original language	English
Article number	042001
Journal	Physical Review Letters
Volume	123
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevLett.123.042001
Publication status	Published - 22 Jul 2019

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.123.042001

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@article{e98bd9083f7144ac973f3d6545d699f9,

title = "Comparison of Fragmentation Functions for Jets Dominated by Light Quarks and Gluons from pp and Pb+Pb Collisions in ATLAS",

abstract = "Charged-particle fragmentation functions for jets azimuthally balanced by a high-transverse-momentum, prompt, isolated photon are measured in 25 pb-1 of pp and 0.49 nb-1 of Pb+Pb collision data at 5.02 TeV per nucleon pair recorded with the ATLAS detector at the Large Hadron Collider. The measurements are compared to predictions of Monte Carlo generators and to measurements of inclusively selected jets. In pp collisions, a different jet fragmentation function in photon-tagged events from that in inclusive jet events arises from the difference in fragmentation between light quarks and gluons. The ratios of the fragmentation functions in Pb+Pb events to that in pp events are used to explore the parton color-charge dependence of jet quenching in the hot medium. In relatively peripheral collisions, fragmentation functions exhibit a similar modification pattern for photon-tagged and inclusive jets. However, photon-tagged jets are observed to have larger modifications than inclusive jets in central Pb+Pb events.",

author = "\{ATLAS Collaboration\} and M. Aaboud and G. Aad and B. Abbott and O. Abdinov and B. Abeloos and Abhayasinghe, \{D. K.\} and Abidi, \{S. H.\} and Abouzeid, \{O. S.\} and Abraham, \{N. L.\} and H. Abramowicz and H. Abreu and Y. Abulaiti and Acharya, \{B. S.\} and S. Adachi and L. Adamczyk and J. Adelman and M. Adersberger and A. Adiguzel and T. Adye and Affolder, \{A. A.\} and Y. Afik and C. Agheorghiesei and Aguilar-Saavedra, \{J. A.\} and F. Ahmadov and G. Aielli and S. Akatsuka and {\AA}kesson, \{T. P.A.\} and E. Akilli and Akimov, \{A. V.\} and Alberghi, \{G. L.\} and J. Albert and P. Albicocco and \{Alconada Verzini\}, \{M. J.\} and S. Alderweireldt and M. Aleksa and Aleksandrov, \{I. N.\} and C. Alexa and T. Alexopoulos and M. Alhroob and B. Ali and G. Alimonti and J. Alison and Alkire, \{S. P.\} and C. Allaire and Allbrooke, \{B. M.M.\} and Allen, \{B. W.\} and Allport, \{P. P.\} and Connell, \{S. H.\} and N. Govender and L. Truong",

note = "Publisher Copyright: {\textcopyright} 2019 CERN.",

year = "2019",

month = jul,

day = "22",

doi = "10.1103/PhysRevLett.123.042001",

language = "English",

volume = "123",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "4",

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TY - JOUR

T1 - Comparison of Fragmentation Functions for Jets Dominated by Light Quarks and Gluons from pp and Pb+Pb Collisions in ATLAS

AU - ATLAS Collaboration

AU - Aaboud, M.

AU - Aad, G.

AU - Abbott, B.

AU - Abdinov, O.

AU - Abeloos, B.

AU - Abhayasinghe, D. K.

AU - Abidi, S. H.

AU - Abouzeid, O. S.

AU - Abraham, N. L.

AU - Abramowicz, H.

AU - Abreu, H.

AU - Abulaiti, Y.

AU - Acharya, B. S.

AU - Adachi, S.

AU - Adamczyk, L.

AU - Adelman, J.

AU - Adersberger, M.

AU - Adiguzel, A.

AU - Adye, T.

AU - Affolder, A. A.

AU - Afik, Y.

AU - Agheorghiesei, C.

AU - Aguilar-Saavedra, J. A.

AU - Ahmadov, F.

AU - Aielli, G.

AU - Akatsuka, S.

AU - Åkesson, T. P.A.

AU - Akilli, E.

AU - Akimov, A. V.

AU - Alberghi, G. L.

AU - Albert, J.

AU - Albicocco, P.

AU - Alconada Verzini, M. J.

AU - Alderweireldt, S.

AU - Aleksa, M.

AU - Aleksandrov, I. N.

AU - Alexa, C.

AU - Alexopoulos, T.

AU - Alhroob, M.

AU - Ali, B.

AU - Alimonti, G.

AU - Alison, J.

AU - Alkire, S. P.

AU - Allaire, C.

AU - Allbrooke, B. M.M.

AU - Allen, B. W.

AU - Allport, P. P.

AU - Connell, S. H.

AU - Govender, N.

AU - Truong, L.

PY - 2019/7/22

Y1 - 2019/7/22

N2 - Charged-particle fragmentation functions for jets azimuthally balanced by a high-transverse-momentum, prompt, isolated photon are measured in 25 pb-1 of pp and 0.49 nb-1 of Pb+Pb collision data at 5.02 TeV per nucleon pair recorded with the ATLAS detector at the Large Hadron Collider. The measurements are compared to predictions of Monte Carlo generators and to measurements of inclusively selected jets. In pp collisions, a different jet fragmentation function in photon-tagged events from that in inclusive jet events arises from the difference in fragmentation between light quarks and gluons. The ratios of the fragmentation functions in Pb+Pb events to that in pp events are used to explore the parton color-charge dependence of jet quenching in the hot medium. In relatively peripheral collisions, fragmentation functions exhibit a similar modification pattern for photon-tagged and inclusive jets. However, photon-tagged jets are observed to have larger modifications than inclusive jets in central Pb+Pb events.

AB - Charged-particle fragmentation functions for jets azimuthally balanced by a high-transverse-momentum, prompt, isolated photon are measured in 25 pb-1 of pp and 0.49 nb-1 of Pb+Pb collision data at 5.02 TeV per nucleon pair recorded with the ATLAS detector at the Large Hadron Collider. The measurements are compared to predictions of Monte Carlo generators and to measurements of inclusively selected jets. In pp collisions, a different jet fragmentation function in photon-tagged events from that in inclusive jet events arises from the difference in fragmentation between light quarks and gluons. The ratios of the fragmentation functions in Pb+Pb events to that in pp events are used to explore the parton color-charge dependence of jet quenching in the hot medium. In relatively peripheral collisions, fragmentation functions exhibit a similar modification pattern for photon-tagged and inclusive jets. However, photon-tagged jets are observed to have larger modifications than inclusive jets in central Pb+Pb events.

UR - https://www.scopus.com/pages/publications/85071896619

U2 - 10.1103/PhysRevLett.123.042001

DO - 10.1103/PhysRevLett.123.042001

M3 - Article

C2 - 31491254

AN - SCOPUS:85071896619

SN - 0031-9007

VL - 123

JO - Physical Review Letters

JF - Physical Review Letters

IS - 4

M1 - 042001

ER -

Comparison of Fragmentation Functions for Jets Dominated by Light Quarks and Gluons from pp and Pb+Pb Collisions in ATLAS

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