Measurement of inclusive jet charged-particle fragmentation functions in Pb+Pb collisions at √sNN=2.76 TeV with the ATLAS detector

ATLAS Collaboration

doi:10.1016/j.physletb.2014.10.065

Measurement of inclusive jet charged-particle fragmentation functions in Pb+Pb collisions at √s_NN=2.76 TeV with the ATLAS detector

ATLAS Collaboration

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Aix-Marseille Université
University of Oklahoma
Academia Sinica Taipei
Laboratoire de l'Accélérateur Linéaire
Azerbaijan Academy of Sciences
University of Amsterdam
Oklahoma State University
Michigan State University
University of Toronto
Tel Aviv University
Technion - Israel Institute of Technology
European Organization for Nuclear Research
Stockholm University
Oskar Klein Centre
INFN- Sezione di Trieste
ICTP
King's College London
Univ of Mining and Metallurgy
Brookhaven National Laboratory
Yale University
University of Munich
Rutherford Appleton Laboratory
University of Belgrade
Laboratório de Instrumentacão e Física Experimental de Partículas
University of Granada
University of Bern
Boston University
Joint Inst. for Nuclear Research
INFN Sezione di Roma Tor Vergata
University of Rome Tor Vergata
Lund University
University of Tokyo
P.N. Lebedev Physical Institute of the Russian Academy of Sciences
Istituto Nazionale di Fisica Nucleare, Sezione di Bologna
DIBINEM, Alma Mater Studiorum, University of Bologna
University of Victoria
University of Grenoble Alpes
Universidad Nacional de la Plata
Horia Hulubei National Institute of Physics and Nuclear Engineering
University of Geneva
National Technical University of Athens
Univ.́ degli Studi di Udine
INFN Sezione di Milano
University of Chicago
University of Birmingham
Department of Physics, Lancaster University
University of Liverpool
University of Manchester
INFN Sezione di Napoli
Università di Napoli Federico II
Niels Bohr Institutet
New York University
Queen Mary University of London
Columbia University
High Energy Accelerator Research Organization (KEK)
Federal University of Rio de Janeiro
Brandeis University
University of Michigan, Ann Arbor
University of Coimbra
University of Lisboa
University of Freiburg
University of Sheffield
Heidelberg University
University of Milan
University of Athens
Technische Universität Dresden
Budker Institute of Nuclear Physics (SB RAS)
INFN, Laboratori Nazionali Di Frascati
National Research Nuclear University MEPhI
Institute of Experimental Physics Slovak Academy of Sciences
Sezione INFN di Roma La Sapienza
University of Oxford
Stanford University
Duke University
Université de Montréal
Deutsches Elektronen-Synchrotron (DESY)
Bogazici University
Universidad Autónoma de Madrid
University of Cambridge
University of Bonn
ITEP
Argonne National Laboratory
Comenius University
University of Illinois at Urbana-Champaign
University of Siegen
Czech Technical University in Prague
University of Johannesburg
TRIUMF
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Commissariat A l'Énergie Atomique et Aux Énergies Alternatives, Centre de Saclay, IRFU
Aristotle University of Thessaloniki
Universita La Sapienza
Institute of High Energy Physics Chinese Academy of Science
Charles University
Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences
University of Wisconsin-Madison
Bergische Universität Wuppertal
Weizmann Institute of Science Israel
University of Melbourne
Sezione INFN di Genova
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Max-Planck-Institut für Physik
University of California at Berkeley
Université de Savoie
Broad Institute of Harvard University
University of Sussex
University of Glasgow
University of California at Santa Cruz
California State University Fresno
Université Pierre et Marie Curie
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University of Gaziantep
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McGill University and Génome Québec Innovation Centre
Carleton University
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Hassan II University of Casablanca
York University
University of Regina
Humboldt-Universität zu Berlin
University College London
Louisiana Tech University
University of London
Radboud University Nijmegen
University of Edinburgh
University of Pittsburgh
Georg August Universität Göttingen
University of Sydney
University of Washington
Johannes Gutenberg University
Natl. Academy of Sciences of Belarus
Institute of Physics of the Czech Academy of Sciences
Moscow State University
Institute for High Energy Physics (IHEP)
Universitat Autònoma de Barcelona
University at Albany
LAIC, Université d'Auvergne
University Mohammed I
University of Texas at Arlington
Tokyo Metropolitan University
University of Oregon
University of Pennsylvania School of Arts and Sciences
Uppsala University
University of the Witwatersrand, Johannesburg
Universidad Técnica Federico Santa María
Indiana University Bloomington
University of Bergen
Simon Fraser University
University of Oslo
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pro3dure medical GmbH
University of Alberta
University of Valencia
Ankara University School of Medicine
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Universite della Calabria
Pontificia Universidad Católica de Chile
Universidade Federal de Juiz de Fora
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Tomsk State University
Iowa State University
Shandong University
Nanjing University
University Mohammed V in Rabat
University of Arizona
Istituto Nazionale di Fisica Nucleare, Sezione di Lecce
Palacky University
Univ. of Ljubljana
Laboratory for Thermal Engineering and Energy
Istituto Nazionale di Fisica Nucleare, Sezione di Pavia
University of Pavia
Università di Napoli Parthenope
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University of California, Irvine
Tbilisi State University
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Justus-Liebig-Universität Gießen
Faculté Des Sciences-Semlalia
Osaka University
Petersburg Nuclear Phys. Inst.
St. Petersburg Technical University
University of British Columbia
Chinese University of Hong Kong
Medical University Innsbruck
Ohio State University
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University of Science and Technology of China
National Center for Energy Sciences and Nuclear Techniques
University of the Aegean
Centro de Física Nuclear Universidade de Lisboa
University of New Mexico
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Technology Department
A.I. Alikhanyan National Science Laboratory (YerPhi)
University of Cape Town
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Center for Autonomous Systems
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Ochanomizu University
Manhattan College
Novosibirsk State University
Shanghai Jiao Tong University
Universidad Antonio Nariño
National Institute of Science Education and Research
Hampton University
Moscow Institute of Physics and Technology
Hiroshima Institute of Technology
Okayama University
PT Government Associated Laboratory, University of Minho
The University of Texas at Austin
University of Buenos Aires
Jagiellonian University
Scuola Internazionale Superiore di Studi Avanzati
National Institute for R&D of Isotopic and Molecular Technologies
University Politehnica of Bucharest
West University in Timisoara
University of South Carolina
CNRS/IN2P3 and Université Paris 11
University of Würzburg
Sun Yat-Sen University
Nagasaki Institute of Applied Science
TOBB University of Economics and Technology
Kyoto University of Education
Ritsumeikan University Biwako-Kusatsu Campus
Massachusetts Institute of Technology
Wigner Research Centre for Physics
Ankara Nucl. Res. and Train. Center
Universität Hamburg
University of KwaZulu-Natal
National Scientific and Educational Centre for Particle and High Energy Physics
Gazi University
University of Malaya

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

154 Scopus citations

Abstract

Measurements of charged-particle fragmentation functions of jets produced in ultra-relativistic nuclear collisions can provide insight into the modification of parton showers in the hot, dense medium created in the collisions. ATLAS has measured jets in s_NN=2.76 TeV Pb+Pb collisions at the LHC using a data set recorded in 2011 with an integrated luminosity of 0.14 nb⁻¹. Jets were reconstructed using the anti-k_t algorithm with distance parameter values R=0.2,0.3,and 0.4. Distributions of charged-particle transverse momentum and longitudinal momentum fraction are reported for seven bins in collision centrality for R=0.4 jets with p_T ^jet>100 GeV. Commensurate minimum p_T values are used for the other radii. Ratios of fragment distributions in each centrality bin to those measured in the most peripheral bin are presented. These ratios show a reduction of fragment yield in central collisions relative to peripheral collisions at intermediate z values, 0.04≲z≲0.2, and an enhancement in fragment yield for z≲0.04. A smaller, less significant enhancement is observed at large z and large p_T in central collisions.

Original language	English
Pages (from-to)	320-342
Number of pages	23
Journal	Physics Letters B
Volume	739
DOIs	https://doi.org/10.1016/j.physletb.2014.10.065
State	Published - 12 Dec 2014
Externally published	Yes

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10.1016/j.physletb.2014.10.065

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@article{908677f84ed54a4780c07d3e150179f0,

title = "Measurement of inclusive jet charged-particle fragmentation functions in Pb+Pb collisions at √sNN=2.76 TeV with the ATLAS detector",

abstract = "Measurements of charged-particle fragmentation functions of jets produced in ultra-relativistic nuclear collisions can provide insight into the modification of parton showers in the hot, dense medium created in the collisions. ATLAS has measured jets in sNN=2.76 TeV Pb+Pb collisions at the LHC using a data set recorded in 2011 with an integrated luminosity of 0.14 nb−1. Jets were reconstructed using the anti-kt algorithm with distance parameter values R=0.2,0.3,and 0.4. Distributions of charged-particle transverse momentum and longitudinal momentum fraction are reported for seven bins in collision centrality for R=0.4 jets with pT jet>100 GeV. Commensurate minimum pT values are used for the other radii. Ratios of fragment distributions in each centrality bin to those measured in the most peripheral bin are presented. These ratios show a reduction of fragment yield in central collisions relative to peripheral collisions at intermediate z values, 0.04≲z≲0.2, and an enhancement in fragment yield for z≲0.04. A smaller, less significant enhancement is observed at large z and large pT in central collisions.",

author = "\{ATLAS Collaboration\} and G. Aad and B. Abbott and J. Abdallah and \{Abdel Khalek\}, S. and O. Abdinov and R. Aben and B. Abi and M. Abolins and AbouZeid, \{O. S.\} and H. Abramowicz and H. Abreu and R. Abreu and Y. Abulaiti and Acharya, \{B. S.\} and L. Adamczyk and Adams, \{D. L.\} and J. Adelman and S. Adomeit and T. Adye and T. Agatonovic-Jovin and Aguilar-Saavedra, \{J. A.\} and M. Agustoni and Ahlen, \{S. P.\} and F. Ahmadov and G. Aielli and H. Akerstedt and {\AA}kesson, \{T. P.A.\} and G. Akimoto and Akimov, \{A. V.\} and Alberghi, \{G. L.\} and J. Albert and S. Albrand and \{Alconada Verzini\}, \{M. J.\} and M. Aleksa and Aleksandrov, \{I. N.\} and C. Alexa and G. Alexander and G. Alexandre and T. Alexopoulos and M. Alhroob and G. Alimonti and L. Alio and J. Alison and Allbrooke, \{B. M.M.\} and Allison, \{L. J.\} and Allport, \{P. P.\} and J. Almond and A. Aloisio and A. Alonso and L. Heinrich",

note = "Publisher Copyright: {\textcopyright} 2014 The Authors",

year = "2014",

month = dec,

day = "12",

doi = "10.1016/j.physletb.2014.10.065",

language = "English",

volume = "739",

pages = "320--342",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Measurement of inclusive jet charged-particle fragmentation functions in Pb+Pb collisions at √sNN=2.76 TeV with the ATLAS detector

AU - ATLAS Collaboration

AU - Aad, G.

AU - Abbott, B.

AU - Abdallah, J.

AU - Abdel Khalek, S.

AU - Abdinov, O.

AU - Aben, R.

AU - Abi, B.

AU - Abolins, M.

AU - AbouZeid, O. S.

AU - Abramowicz, H.

AU - Abreu, H.

AU - Abreu, R.

AU - Abulaiti, Y.

AU - Acharya, B. S.

AU - Adamczyk, L.

AU - Adams, D. L.

AU - Adelman, J.

AU - Adomeit, S.

AU - Adye, T.

AU - Agatonovic-Jovin, T.

AU - Aguilar-Saavedra, J. A.

AU - Agustoni, M.

AU - Ahlen, S. P.

AU - Ahmadov, F.

AU - Aielli, G.

AU - Akerstedt, H.

AU - Åkesson, T. P.A.

AU - Akimoto, G.

AU - Akimov, A. V.

AU - Alberghi, G. L.

AU - Albert, J.

AU - Albrand, S.

AU - Alconada Verzini, M. J.

AU - Aleksa, M.

AU - Aleksandrov, I. N.

AU - Alexa, C.

AU - Alexander, G.

AU - Alexandre, G.

AU - Alexopoulos, T.

AU - Alhroob, M.

AU - Alimonti, G.

AU - Alio, L.

AU - Alison, J.

AU - Allbrooke, B. M.M.

AU - Allison, L. J.

AU - Allport, P. P.

AU - Almond, J.

AU - Aloisio, A.

AU - Alonso, A.

AU - Heinrich, L.

PY - 2014/12/12

Y1 - 2014/12/12

N2 - Measurements of charged-particle fragmentation functions of jets produced in ultra-relativistic nuclear collisions can provide insight into the modification of parton showers in the hot, dense medium created in the collisions. ATLAS has measured jets in sNN=2.76 TeV Pb+Pb collisions at the LHC using a data set recorded in 2011 with an integrated luminosity of 0.14 nb−1. Jets were reconstructed using the anti-kt algorithm with distance parameter values R=0.2,0.3,and 0.4. Distributions of charged-particle transverse momentum and longitudinal momentum fraction are reported for seven bins in collision centrality for R=0.4 jets with pT jet>100 GeV. Commensurate minimum pT values are used for the other radii. Ratios of fragment distributions in each centrality bin to those measured in the most peripheral bin are presented. These ratios show a reduction of fragment yield in central collisions relative to peripheral collisions at intermediate z values, 0.04≲z≲0.2, and an enhancement in fragment yield for z≲0.04. A smaller, less significant enhancement is observed at large z and large pT in central collisions.

AB - Measurements of charged-particle fragmentation functions of jets produced in ultra-relativistic nuclear collisions can provide insight into the modification of parton showers in the hot, dense medium created in the collisions. ATLAS has measured jets in sNN=2.76 TeV Pb+Pb collisions at the LHC using a data set recorded in 2011 with an integrated luminosity of 0.14 nb−1. Jets were reconstructed using the anti-kt algorithm with distance parameter values R=0.2,0.3,and 0.4. Distributions of charged-particle transverse momentum and longitudinal momentum fraction are reported for seven bins in collision centrality for R=0.4 jets with pT jet>100 GeV. Commensurate minimum pT values are used for the other radii. Ratios of fragment distributions in each centrality bin to those measured in the most peripheral bin are presented. These ratios show a reduction of fragment yield in central collisions relative to peripheral collisions at intermediate z values, 0.04≲z≲0.2, and an enhancement in fragment yield for z≲0.04. A smaller, less significant enhancement is observed at large z and large pT in central collisions.

UR - https://www.scopus.com/pages/publications/85040634958

U2 - 10.1016/j.physletb.2014.10.065

DO - 10.1016/j.physletb.2014.10.065

M3 - Article

AN - SCOPUS:85040634958

SN - 0370-2693

VL - 739

SP - 320

EP - 342

JO - Physics Letters B

JF - Physics Letters B

ER -

Measurement of inclusive jet charged-particle fragmentation functions in Pb+Pb collisions at √s_NN=2.76 TeV with the ATLAS detector

Abstract

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