Centrality dependence of charged particle production at large transverse momentum in Pb–Pb collisions at √sNN=2.76 TeV

ALICE Collaboration

doi:10.1016/j.physletb.2013.01.051

Centrality dependence of charged particle production at large transverse momentum in Pb–Pb collisions at √s_NN=2.76 TeV

ALICE Collaboration

Sección de Física

Lawrence Livermore National Laboratory
Faculty of Nuclear Sciences and Physical Engineering
Czech Academy of Sciences
Yale University
Panjab University
CERN
Hungarian Academy of Sciences
National Institute for Nuclear Physics
Universidad Nacional Autónoma de México
Variable Energy Cyclotron Centre
Aligarh Muslim University
Korea Institute of Science and Technology Information
Gangneung-Wonju National University
Alikhanov Institute for Theoretical and Experimental Physics
Russian Research Centre Kurchatov Institute
Enrico Fermi Center
NASU - Bogolyubov Institute for Theoretical Physics
Western Norway University of Applied Sciences
Goethe University Frankfurt
University of Bergen
St. Petersburg State University
Horia Hulubei National Institute of Physics and Nuclear Engineering
GSI Helmholtz Centre for Heavy Ion Research
Heidelberg University
University of Münster
Ohio State University
Ruder Boskovic Institute
Nantes Université
Université Joseph Fourier
Universidad de Santiago de Compostela
Oak Ridge National Laboratory
University of Helsinki
University of Cape Town
Université Clermont Auvergne
IRFU
Slovak Academy of Sciences
Institute of Physics Bhubaneswar
University of Birmingham
Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
Joint Institute for Nuclear Research
University of Copenhagen
Indian Institute of Technology Bombay
Université de Strasbourg
University of Houston
RAS - Saint Petersburg Nuclear Physics Institute
University of Jammu
University of Tsukuba
Utrecht University
CIEMAT
Moscow Engineering Physics Institute
Institute for High Energy Physics
Pavol Jozef Šafárik University
Wayne State University
Saha Institute of Nuclear Physics
National Institute for Subatomic Physics
Université Paris-Saclay
Lawrence Berkeley National Laboratory
Purdue University
Comenius University
All-Russian Scientific Research Institute of Experimental Physics
Central China Normal University
Pontificia Universidad Católica del Perú
Centro de Investigacion y de Estudios Avanzados del Instituto Politécnico Nacional
Universidade de São Paulo
Centro de Aplicaciones Tecnológicas y Desarrollo Nuclear
Yonsei University
Creighton University
Universite Claude Bernard Lyon 1
Universidade Estadual de Campinas
Lund University
Pusan National University
University of Eastern Piedmont
Benemerita Universidad Autonoma de Puebla
Institute for Space Sciences
STFC Daresbury Laboratory
University of Oslo
RAS - Institute for Nuclear Research
Chicago State University
Warsaw University of Technology
Universidad Autonoma de Sinaloa
University of Rajasthan
University of Split
A. Alikhanian Yerevan Institute of Physics
The University of Tokyo
Sejong University
University of Tübingen
Technische Universität Darmstadt
Yildiz Technical University
University of Applied Sciences Worms
California Polytechnic State University, San Luis Obispo
University of Texas at Austin
Köln University of Applied Sciences
Lomonosov Moscow State University
University of Tennessee, Knoxville
University of Rome La Sapienza
University of Belgrade
RAS - Budker Institute of Nuclear Physics
University of Wrocław
Laboratori Nazionali di Legnaro
Indian Institute of Technology Indore
Hiroshima University
National and Kapodistrian University of Athens
Centre de calcul de l'IN2P3

Producción científica: Contribución a una revista › Artículo › revisión exhaustiva

343 Citas (Scopus)

Resumen

The inclusive transverse momentum (p_T) distributions of primary charged particles are measured in the pseudo-rapidity range |η|<0.8 as a function of event centrality in Pb–Pb collisions at s_NN=2.76 TeV with ALICE at the LHC. The data are presented in the p_T range 0.15<p_T<50 GeV/c for nine centrality intervals from 70–80% to 0–5%. The results in Pb–Pb are presented in terms of the nuclear modification factor R_AA using a pp reference spectrum measured at the same collision energy. We observe that the suppression of high-p_T particles strongly depends on event centrality. The yield is most suppressed in central collisions (0–5%) with R_AA≈0.13 at p_T=6–7 GeV/c. Above p_T=7 GeV/c, there is a significant rise in the nuclear modification factor, which reaches R_AA≈0.4 for p_T>30 GeV/c. In peripheral collisions (70–80%), only moderate suppression (R_AA=0.6–0.7) and a weak p_T dependence is observed. The measured nuclear modification factors are compared to other measurements and model calculations.

Idioma original	Inglés
Páginas (desde-hasta)	52-62
Número de páginas	11
Publicación	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volumen	720
N.º	1-3
DOI	https://doi.org/10.1016/j.physletb.2013.01.051
Estado	Publicada - 13 mar. 2013

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10.1016/j.physletb.2013.01.051

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@article{a46cde04d2e8407086f753c634d3136e,

title = "Centrality dependence of charged particle production at large transverse momentum in Pb{\textendash}Pb collisions at √sNN=2.76 TeV",

abstract = "The inclusive transverse momentum (pT) distributions of primary charged particles are measured in the pseudo-rapidity range |η|<0.8 as a function of event centrality in Pb{\textendash}Pb collisions at sNN=2.76 TeV with ALICE at the LHC. The data are presented in the pT range 0.15T<50 GeV/c for nine centrality intervals from 70{\textendash}80\% to 0{\textendash}5\%. The results in Pb{\textendash}Pb are presented in terms of the nuclear modification factor RAA using a pp reference spectrum measured at the same collision energy. We observe that the suppression of high-pT particles strongly depends on event centrality. The yield is most suppressed in central collisions (0{\textendash}5\%) with RAA≈0.13 at pT=6{\textendash}7 GeV/c. Above pT=7 GeV/c, there is a significant rise in the nuclear modification factor, which reaches RAA≈0.4 for pT>30 GeV/c. In peripheral collisions (70{\textendash}80\%), only moderate suppression (RAA=0.6{\textendash}0.7) and a weak pT dependence is observed. The measured nuclear modification factors are compared to other measurements and model calculations.",

author = "\{ALICE Collaboration\} and B. Abelev and J. Adam and D. Adamov{\'a} and Adare, \{A. M.\} and Aggarwal, \{M. M.\} and \{Aglieri Rinella\}, G. and Agocs, \{A. G.\} and A. Agostinelli and \{Aguilar Salazar\}, S. and Z. Ahammed and N. Ahmad and \{Ahmad Masoodi\}, A. and Ahn, \{S. A.\} and Ahn, \{S. U.\} and A. Akindinov and D. Aleksandrov and B. Alessandro and \{Alfaro Molina\}, R. and A. Alici and A. Alkin and \{Almar{\'a}z Avi{\~n}a\}, E. and J. Alme and T. Alt and V. Altini and S. Altinpinar and I. Altsybeev and C. Andrei and A. Andronic and V. Anguelov and J. Anielski and C. Anson and T. Anti{\v c}i{\'c} and F. Antinori and P. Antonioli and L. Aphecetche and H. Appelsh{\"a}user and N. Arbor and S. Arcelli and A. Arend and N. Armesto and R. Arnaldi and T. Aronsson and Arsene, \{I. C.\} and M. Arslandok and A. Asryan and A. Augustinus and R. Averbeck and Awes, \{T. C.\} and J. {\"A}yst{\"o} and A. Gago",

note = "Publisher Copyright: {\textcopyright} 2013 CERN",

year = "2013",

month = mar,

day = "13",

doi = "10.1016/j.physletb.2013.01.051",

language = "English",

volume = "720",

pages = "52--62",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

number = "1-3",

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TY - JOUR

T1 - Centrality dependence of charged particle production at large transverse momentum in Pb–Pb collisions at √sNN=2.76 TeV

AU - ALICE Collaboration

AU - Abelev, B.

AU - Adam, J.

AU - Adamová, D.

AU - Adare, A. M.

AU - Aggarwal, M. M.

AU - Aglieri Rinella, G.

AU - Agocs, A. G.

AU - Agostinelli, A.

AU - Aguilar Salazar, S.

AU - Ahammed, Z.

AU - Ahmad, N.

AU - Ahmad Masoodi, A.

AU - Ahn, S. A.

AU - Ahn, S. U.

AU - Akindinov, A.

AU - Aleksandrov, D.

AU - Alessandro, B.

AU - Alfaro Molina, R.

AU - Alici, A.

AU - Alkin, A.

AU - Almaráz Aviña, E.

AU - Alme, J.

AU - Alt, T.

AU - Altini, V.

AU - Altinpinar, S.

AU - Altsybeev, I.

AU - Andrei, C.

AU - Andronic, A.

AU - Anguelov, V.

AU - Anielski, J.

AU - Anson, C.

AU - Antičić, T.

AU - Antinori, F.

AU - Antonioli, P.

AU - Aphecetche, L.

AU - Appelshäuser, H.

AU - Arbor, N.

AU - Arcelli, S.

AU - Arend, A.

AU - Armesto, N.

AU - Arnaldi, R.

AU - Aronsson, T.

AU - Arsene, I. C.

AU - Arslandok, M.

AU - Asryan, A.

AU - Augustinus, A.

AU - Averbeck, R.

AU - Awes, T. C.

AU - Äystö, J.

AU - Gago, A.

PY - 2013/3/13

Y1 - 2013/3/13

N2 - The inclusive transverse momentum (pT) distributions of primary charged particles are measured in the pseudo-rapidity range |η|<0.8 as a function of event centrality in Pb–Pb collisions at sNN=2.76 TeV with ALICE at the LHC. The data are presented in the pT range 0.15T<50 GeV/c for nine centrality intervals from 70–80% to 0–5%. The results in Pb–Pb are presented in terms of the nuclear modification factor RAA using a pp reference spectrum measured at the same collision energy. We observe that the suppression of high-pT particles strongly depends on event centrality. The yield is most suppressed in central collisions (0–5%) with RAA≈0.13 at pT=6–7 GeV/c. Above pT=7 GeV/c, there is a significant rise in the nuclear modification factor, which reaches RAA≈0.4 for pT>30 GeV/c. In peripheral collisions (70–80%), only moderate suppression (RAA=0.6–0.7) and a weak pT dependence is observed. The measured nuclear modification factors are compared to other measurements and model calculations.

AB - The inclusive transverse momentum (pT) distributions of primary charged particles are measured in the pseudo-rapidity range |η|<0.8 as a function of event centrality in Pb–Pb collisions at sNN=2.76 TeV with ALICE at the LHC. The data are presented in the pT range 0.15T<50 GeV/c for nine centrality intervals from 70–80% to 0–5%. The results in Pb–Pb are presented in terms of the nuclear modification factor RAA using a pp reference spectrum measured at the same collision energy. We observe that the suppression of high-pT particles strongly depends on event centrality. The yield is most suppressed in central collisions (0–5%) with RAA≈0.13 at pT=6–7 GeV/c. Above pT=7 GeV/c, there is a significant rise in the nuclear modification factor, which reaches RAA≈0.4 for pT>30 GeV/c. In peripheral collisions (70–80%), only moderate suppression (RAA=0.6–0.7) and a weak pT dependence is observed. The measured nuclear modification factors are compared to other measurements and model calculations.

UR - https://www.scopus.com/pages/publications/85040604787

U2 - 10.1016/j.physletb.2013.01.051

DO - 10.1016/j.physletb.2013.01.051

M3 - Article

AN - SCOPUS:85040604787

SN - 0370-2693

VL - 720

SP - 52

EP - 62

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 1-3