Centrality dependence of the pseudorapidity density distribution for charged particles in Pb–Pb collisions at sNN=5.02 TeV

ALICE Collaboration

doi:10.1016/j.physletb.2017.07.017

Centrality dependence of the pseudorapidity density distribution for charged particles in Pb–Pb collisions at s_NN=5.02 TeV

ALICE Collaboration

Sección de Física

Czech Technical University in Prague
Czech Academy of Sciences
Panjab University
CERN
Politecnico di Torino
Sezione INFN
Indian Institute of Technology Bombay
Variable Energy Cyclotron Centre
Department of Physics Aligarh Muslim University
Korea Institute of Science and Technology Information
Yale University
Alikhanov Institute for Theoretical and Experimental Physics
Universidade Estadual de Campinas
Russian Research Centre Kurchatov Institute
University of Birmingham
Universidad Nacional Autónoma de México
Centro Fermi - Museo Storico della Fisica e Centro Studi e Ricerche Enrico Fermi
National Institute for Nuclear Physics
Bogolyubov Institute for Theoretical Physics Nasu
University of Bergen
Western Norway University of Applied Sciences
Frankfurt Institute for Advanced Studies
St. Petersburg State University
Universidade de São Paulo
Central China Normal University
National Institute for Physics and Nuclear Engineering
GSI Helmholtzzentrum für Schwerionenforschung
Ruprecht-Karls-Universität Heidelberg
Creighton University
Ruder Boskovic Institute
University of Houston
Nantes Université
Goethe University Frankfurt
University of Bologna
Technische Universität München
Technical University of Munich
University of Oslo
Dipartimento di Fisica e Astronomia dell'Università and Sezione INFN
Konkuk University
University of Jammu
CNRS-IN2P3
Institute of Physics Bhubaneswar
University of Catania
Hungarian Academy of Sciences
Université Clermont Auvergne
Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
University of Münster
Joint Institute for Nuclear Research
University of Copenhagen
Inha University
Université de Strasbourg
Benemérita Universidad Autónoma de Puebla
Universidad Autonoma de Sinaloa
Moscow Engineering Physics Institute
Petersburg Nuclear Physics Institute (PNPI)
Institute for Subatomic Physics of Utrecht University
University of Tennessee
Gauhati University
INFN, Laboratori Nazionali Di Frascati
Wayne State University
Bose Institute
University of Texas at Austin
Lawrence Berkeley National Laboratory
Pavol Jozef Šafárik University
Pusan National University
University of Liverpool
Purdue University
University of Helsinki
Russian Federal Nuclear Center (VNIIEF)
Austrian Academy of Sciences
University of Tsukuba
National Research Foundation
COMSATS University Islamabad
Ohio State University
Technical University of Košice
Pontifical Catholic Univ. of Peru
Sezione INFN
Centro de Aplicaciones Tecnológicas y Desarrollo Nuclear
University of Jyväskylä
Saha Institute of Nuclear Physics
Universite Claude Bernard Lyon 1
National Institute for Subatomic Physics
University of Lund
University of Cape Town
Slovak Academy of Sciences
Université Grenoble Alpes
Georgia State University
Oak Ridge National Laboratory
Università del Piemonte Orientale and Gruppo Collegato INFN
Universidade Federal do ABC
Centro de Investigación y de Estudios AVanzados (CINVESTAV)
Institute of Space Science (ISS)
National Institute of Science Education and Research
Indian Institute of Technology Indore
National Centre for Nuclear Studies
Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT)
University of Zagreb
Institute for High Energy Physics
Universidad de Santiago de Compostela
RAS - Institute for Nuclear Research
National and Kapodistrian University of Athens
Chicago State University
Universidade Federal do Rio Grande do Sul
University of Split
Warsaw University of Technology
A. Alikhanian Yerevan Institute of Physics
Tokyo University
Nagasaki Institute of Applied Science
Eberhard Karls Universität Tübingen
Institute of Physics of the Czech Academy of Sciences
Sejong University
Yonsei University
KTO Karatay University
Fachhochschule Worms
Gangneung-Wonju National University
California Polytechnic State University, San Luis Obispo
Suranaree University of Technology
University of South-Eastern Norway
STFC Daresbury Laboratory
China Institute of Atomic Energy
M.V.Lomonosov Moscow State University
University of the Witwatersrand
University of Rome La Sapienza
Comenius University
Rheinische Friedrich-Wilhelms-Universität Bonn
Hiroshima University
Università di Brescia
Budker Institute for Nuclear Physics
University of Rajasthan
Laboratori Nazionali di Legnaro
Indonesian Institute of Sciences
Centre de calcul de l'IN2P3

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109 Citas (Scopus)

Resumen

We present the charged-particle pseudorapidity density in Pb–Pb collisions at s_NN=5.02 TeV in centrality classes measured by ALICE. The measurement covers a wide pseudorapidity range from −3.5 to 5, which is sufficient for reliable estimates of the total number of charged particles produced in the collisions. For the most central (0–5%) collisions we find 21400±1300, while for the most peripheral (80–90%) we find 230±38. This corresponds to an increase of (27±4)% over the results at s_NN=2.76 TeV previously reported by ALICE. The energy dependence of the total number of charged particles produced in heavy-ion collisions is found to obey a modified power-law like behaviour. The charged-particle pseudorapidity density of the most central collisions is compared to model calculations — none of which fully describes the measured distribution. We also present an estimate of the rapidity density of charged particles. The width of that distribution is found to exhibit a remarkable proportionality to the beam rapidity, independent of the collision energy from the top SPS to LHC energies.

Idioma original	Inglés
Páginas (desde-hasta)	567-577
Número de páginas	11
Publicación	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volumen	772
DOI	https://doi.org/10.1016/j.physletb.2017.07.017
Estado	Publicada - 10 set. 2017

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@article{6fc77a31602c4fa888c4f6b3a380a63c,

title = "Centrality dependence of the pseudorapidity density distribution for charged particles in Pb–Pb collisions at sNN=5.02 TeV",

abstract = "We present the charged-particle pseudorapidity density in Pb–Pb collisions at sNN=5.02 TeV in centrality classes measured by ALICE. The measurement covers a wide pseudorapidity range from −3.5 to 5, which is sufficient for reliable estimates of the total number of charged particles produced in the collisions. For the most central (0–5\%) collisions we find 21400±1300, while for the most peripheral (80–90\%) we find 230±38. This corresponds to an increase of (27±4)\% over the results at sNN=2.76 TeV previously reported by ALICE. The energy dependence of the total number of charged particles produced in heavy-ion collisions is found to obey a modified power-law like behaviour. The charged-particle pseudorapidity density of the most central collisions is compared to model calculations — none of which fully describes the measured distribution. We also present an estimate of the rapidity density of charged particles. The width of that distribution is found to exhibit a remarkable proportionality to the beam rapidity, independent of the collision energy from the top SPS to LHC energies.",

author = "\{ALICE Collaboration\} and J. Adam and D. Adamov{\'a} and Aggarwal, \{M. M.\} and \{Aglieri Rinella\}, G. and M. Agnello and N. Agrawal and Z. Ahammed and S. Ahmad and Ahn, \{S. U.\} and S. Aiola and A. Akindinov and Alam, \{S. N.\} and Albuquerque, \{D. S.D.\} and D. Aleksandrov and B. Alessandro and D. Alexandre and \{Alfaro Molina\}, R. and A. Alici and A. Alkin and J. Alme and T. Alt and S. Altinpinar and I. Altsybeev and \{Alves Garcia Prado\}, C. and M. An and C. Andrei and Andrews, \{H. A.\} and A. Andronic and V. Anguelov and C. Anson and T. Anti{\v c}i{\'c} and F. Antinori and P. Antonioli and R. Anwar and L. Aphecetche and H. Appelsh{\"a}user and S. Arcelli and R. Arnaldi and Arnold, \{O. W.\} and Arsene, \{I. C.\} and M. Arslandok and B. Audurier and A. Augustinus and R. Averbeck and Azmi, \{M. D.\} and A. Badal{\`a} and Baek, \{Y. W.\} and S. Bagnasco and R. Bailhache and Gago, \{A. M.\}",

note = "Publisher Copyright: {\textcopyright} 2017 The Author(s)",

year = "2017",

month = sep,

day = "10",

doi = "10.1016/j.physletb.2017.07.017",

language = "English",

volume = "772",

pages = "567--577",

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

issn = "0370-2693",

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TY - JOUR

T1 - Centrality dependence of the pseudorapidity density distribution for charged particles in Pb–Pb collisions at sNN=5.02 TeV

AU - ALICE Collaboration

AU - Adam, J.

AU - Adamová, D.

AU - Aggarwal, M. M.

AU - Aglieri Rinella, G.

AU - Agnello, M.

AU - Agrawal, N.

AU - Ahammed, Z.

AU - Ahmad, S.

AU - Ahn, S. U.

AU - Aiola, S.

AU - Akindinov, A.

AU - Alam, S. N.

AU - Albuquerque, D. S.D.

AU - Aleksandrov, D.

AU - Alessandro, B.

AU - Alexandre, D.

AU - Alfaro Molina, R.

AU - Alici, A.

AU - Alkin, A.

AU - Alme, J.

AU - Alt, T.

AU - Altinpinar, S.

AU - Altsybeev, I.

AU - Alves Garcia Prado, C.

AU - An, M.

AU - Andrei, C.

AU - Andrews, H. A.

AU - Andronic, A.

AU - Anguelov, V.

AU - Anson, C.

AU - Antičić, T.

AU - Antinori, F.

AU - Antonioli, P.

AU - Anwar, R.

AU - Aphecetche, L.

AU - Appelshäuser, H.

AU - Arcelli, S.

AU - Arnaldi, R.

AU - Arnold, O. W.

AU - Arsene, I. C.

AU - Arslandok, M.

AU - Audurier, B.

AU - Augustinus, A.

AU - Averbeck, R.

AU - Azmi, M. D.

AU - Badalà, A.

AU - Baek, Y. W.

AU - Bagnasco, S.

AU - Bailhache, R.

AU - Gago, A. M.

PY - 2017/9/10

Y1 - 2017/9/10

N2 - We present the charged-particle pseudorapidity density in Pb–Pb collisions at sNN=5.02 TeV in centrality classes measured by ALICE. The measurement covers a wide pseudorapidity range from −3.5 to 5, which is sufficient for reliable estimates of the total number of charged particles produced in the collisions. For the most central (0–5%) collisions we find 21400±1300, while for the most peripheral (80–90%) we find 230±38. This corresponds to an increase of (27±4)% over the results at sNN=2.76 TeV previously reported by ALICE. The energy dependence of the total number of charged particles produced in heavy-ion collisions is found to obey a modified power-law like behaviour. The charged-particle pseudorapidity density of the most central collisions is compared to model calculations — none of which fully describes the measured distribution. We also present an estimate of the rapidity density of charged particles. The width of that distribution is found to exhibit a remarkable proportionality to the beam rapidity, independent of the collision energy from the top SPS to LHC energies.

AB - We present the charged-particle pseudorapidity density in Pb–Pb collisions at sNN=5.02 TeV in centrality classes measured by ALICE. The measurement covers a wide pseudorapidity range from −3.5 to 5, which is sufficient for reliable estimates of the total number of charged particles produced in the collisions. For the most central (0–5%) collisions we find 21400±1300, while for the most peripheral (80–90%) we find 230±38. This corresponds to an increase of (27±4)% over the results at sNN=2.76 TeV previously reported by ALICE. The energy dependence of the total number of charged particles produced in heavy-ion collisions is found to obey a modified power-law like behaviour. The charged-particle pseudorapidity density of the most central collisions is compared to model calculations — none of which fully describes the measured distribution. We also present an estimate of the rapidity density of charged particles. The width of that distribution is found to exhibit a remarkable proportionality to the beam rapidity, independent of the collision energy from the top SPS to LHC energies.

UR - https://www.scopus.com/pages/publications/85025159471

U2 - 10.1016/j.physletb.2017.07.017

DO - 10.1016/j.physletb.2017.07.017

M3 - Article

AN - SCOPUS:85025159471

SN - 0370-2693

VL - 772

SP - 567

EP - 577

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

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

ER -

Centrality dependence of the pseudorapidity density distribution for charged particles in Pb–Pb collisions at sNN=5.02 TeV

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Centrality dependence of the pseudorapidity density distribution for charged particles in Pb–Pb collisions at s_NN=5.02 TeV