Non-Gaussian elliptic-flow fluctuations in PbPb collisions at sNN=5.02TeV

CMS Collaboration

doi:10.1016/j.physletb.2018.11.063

Non-Gaussian elliptic-flow fluctuations in PbPb collisions at s_NN=5.02TeV

CMS Collaboration

Yerevan Physics Institute
Institut für Hochenergiephysik
Vienna University of Technology
Institute for Nuclear Problems of Belarusian State University
Vrjie Universiteit Brussel
Université Paris-Saclay
Imperial College London
Université Libre de Bruxelles
State Key Laboratory of Nuclear Physics and Technology
Ghent University
University of Louvain
Centro Brasileiro de Pesquisas Fisicas
Rua São Francisco de Xavier
University of Campinas (UNICAMP)
Universidade Federal de Pelotas
São Paulo State University
Federal University of ABC (UFABC)
Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences
University of Sofia
Beihang University
Institute of High Energy Physics, Chinese Academy of Sciences
Universidad de Los Andes, Colombia
Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, University of Split
Faculty of Science, University of Split
Ruđer Bošković Institute
Institute for Theoretical and Experimental Physics
University of Cyprus
Joint Institute for Nuclear Research, Dubna
Charles University
Universidad San Francisco de Quito
Helwan University
Kyungpook National University
Egyptian Network of High Energy Physics
Texas A&M University at Qatar
British University in Egypt
Mimar Sinan University
National Institute of Chemical Physics and Biophysics, Tallinn
University of Helsinki
Helsinki Institute of Physics
LUT University
Université de Haute Alsace
Université de Strasbourg
Université Paris-Sud
IGFL, Université de Lyon, Université Lyon 1
Moscow State University
Tbilisi State University
Georgian Technical University
RWTH Aachen University
European Organization for Nuclear Research
c/o DESY
Universität Hamburg
Joint Faculty of the Brandenburg University of Technology Cottbus Senftenberg
Institut für Experimentelle Kernphysik
NCSR Demokritos
University of Athens
National Technical University of Athens
University of Ioannina
Eötvös Loránd University
Wigner Research Centre for Physics
Institute of Nuclear Research ATOMKI
University of Debrecen
Indian Institute of Science
IIT Bhubaneswar
National Institute of Science Education and Research
Institute of Physics Bhubaneswar
Panjab University
University of Delhi
Saha Institute of Nuclear Physics
Indian Institute of Technology Madras
Bhabha Atomic Research Centre
Tata Institute of Fundamental Research, Mumbai
University of Visva-Bharati
University of Ruhuna
Indian Institute of Science Education and Research (IISER)
Isfahan University of Technology
Institute for Research in Fundamental Sciences (IPM)
Yazd University
Islamic Azad University, Science and Research Branch
University College Dublin
INFN Sezione di Bari
Università degli studi di Bari Aldo Moro
Politecnico di Bari
INFN Sezione di Bologna
University of Bologna
INFN Sezione di Catania
Università degli Studi di Catania
Istituto Nazionale di Fisica Nucleare, Sezione di Firenze
University of Florence
University of Siena
LNF-INFN
Sezione di Genova
University of Genoa
INFN Sezione di Milano-Bicocca
University of Milano-Bicocca
INFN Sezione di Napoli
Università degli Studi della Basilicata
Università G. Marconi
University of Naples Federico II
INFN
University of Padova
Laboratori Nazionali di Legnaro
University of Antwerp
INFN Sezione di Pavia
University of Pavia
INFN Sezione di Perugia
University of Perugia
Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
University of Pisa
Scuola Normale Superiore di Pisa
Purdue University
Sezione di Roma
University of Rome
INFN Sezione di Torino
University of Turin
Laboratory of Molecular Pathology
INFN Sezione di Trieste
University of Trieste
Chonbuk National University
Chonnam National University
Hanyang University
Korea University
Seoul National University
University of Seoul
Sungkyunkwan University
Vilnius University
University Malaya
International Islamic University of Malaysia
MOSTI
CINVESTAV-IPN
Consejo Nacional de Ciencia y Tecnología
Universidad Iberoamericana
Benemerita Universidad Autonoma de Puebla
Universidad Autónoma de San Luis Potosi
University of Auckland
University of Canterbury
Quaid-i-Azam University
National Centre for Nuclear Research
University of Warsaw
Warsaw University of Technology
Lisboa
Institute for Nuclear Research of the Russian Academy of Sciences
Sinop University
Institute of Nuclear Physics of the Uzbekistan Academy of Sciences
Petersburg Nuclear Physics Institute (PNPI)
St. Petersburg State Polytechnical University
University of Florida
Moscow Institute of Physics and Technology
P.N. Lebedev Physical Institute of the Russian Academy of Sciences
National Research Nuclear University MEPhI
Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
Novosibirsk State University
Kurchatov Institute
University of Belgrade
University of Belgrade
Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT)
Universidad Autónoma de Madrid
University of Oviedo
CSIC-Univ. Cantabria
Riga Technical University
Paul Scherrer Institut
University of Zurich
ETH Zurich
Stefan Meyer Institute for Subatomic Physics (SMI)
National Central University
National Taiwan University
Chulalongkorn University
Gaziosmanpasa University
Cukurova University
Istanbul Aydin University
Mersin University
Cag University
Piri Reis University
Middle East Technical University (METU)
Izmir Institute of Technology
Necmettin Erbakan University
Bogazici University
Marmara University
Kafkas University
Istanbul Bilgi University
Istanbul Technical University
Academy of Science of Ukraine
Kharkov Institute of Physics and Technology
University of Bristol
CCLRC Rutherford Appleton Laboratory
University of Southampton
Instituto de Astrofisica de Canarias
Brunel University London
Baylor University
Catholic University of America
University of Alabama
Boston University
Women and Infants Hospital of Rhode Island-Warren Alpert Medical School of Brown University
University of California, Davis
University of California, Los Angeles
University of California, Riverside
University of California, San Diego
Utah Valley University
University of California, Santa Barbara
California Institute of Technology
Carnegie Mellon University
University of Colorado Boulder
Cornell University
Fermi National Accelerator Laboratory
Florida International University
Florida State University
Florida Institute of Technology
University of Illinois at Chicago
Beykent University
University of Iowa
Bingol University
Erzincan University
Johns Hopkins University
University of Kansas
Kansas State University
Lawrence Livermore National Laboratory
University of Maryland, College Park
Massachusetts Institute of Technology
University of Minnesota Twin Cities
University of Mississippi
University of Nebraska-Lincoln
University at Buffalo, The State University of New York
Northeastern University
Northwestern University
University of Notre Dame
The Ohio State University
Princeton University
University of Puerto Rico
Purdue University Northwest
Rice University
University of Rochester
The Rockefeller University
Rutgers University–New Brunswick
University of Tennessee
Texas A&M University
Texas Tech University
Vanderbilt University
University of Virginia
Wayne State University
University of Wisconsin-Madison

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

56 Citations (Scopus)

Résumé

Event-by-event fluctuations in the elliptic-flow coefficient v₂ are studied in PbPb collisions at s_NN=5.02 TeV using the CMS detector at the CERN LHC. Elliptic-flow probability distributions p(v₂) for charged particles with transverse momentum 0.3<p_T<3.0GeV/c and pseudorapidity |η|<1.0 are determined for different collision centrality classes. The moments of the p(v₂) distributions are used to calculate the v₂ coefficients based on cumulant orders 2, 4, 6, and 8. A rank ordering of the higher-order cumulant results and nonzero standardized skewness values obtained for the p(v₂) distributions indicate non-Gaussian initial-state fluctuations. Bessel–Gaussian and elliptic power fits to the flow distributions are studied to characterize the initial-state spatial anisotropy.

langue originale	Anglais
Pages (de - à)	643-665
Nombre de pages	23
journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	789
Les DOIs	https://doi.org/10.1016/j.physletb.2018.11.063
état	Publié - 10 févr. 2019
Modification externe	Oui

Accès au document

10.1016/j.physletb.2018.11.063

Contient cette citation

@article{a3c1a26aef2e466aad383c9dc52f533a,

title = "Non-Gaussian elliptic-flow fluctuations in PbPb collisions at sNN=5.02TeV",

abstract = "Event-by-event fluctuations in the elliptic-flow coefficient v2 are studied in PbPb collisions at sNN=5.02 TeV using the CMS detector at the CERN LHC. Elliptic-flow probability distributions p(v2) for charged particles with transverse momentum 0.3T<3.0GeV/c and pseudorapidity |η|<1.0 are determined for different collision centrality classes. The moments of the p(v2) distributions are used to calculate the v2 coefficients based on cumulant orders 2, 4, 6, and 8. A rank ordering of the higher-order cumulant results and nonzero standardized skewness values obtained for the p(v2) distributions indicate non-Gaussian initial-state fluctuations. Bessel–Gaussian and elliptic power fits to the flow distributions are studied to characterize the initial-state spatial anisotropy.",

keywords = "Event-by-event elliptic flow, Non-Gaussian flow fluctuations, Unfolding",

author = "\{CMS Collaboration\} and Sirunyan, \{A. M.\} and A. Tumasyan and W. Adam and F. Ambrogi and E. Asilar and T. Bergauer and J. Brandstetter and E. Brondolin and M. Dragicevic and J. Er{\"o} and M. Flechl and M. Friedl and R. Fr{\"u}hwirth and Ghete, \{V. M.\} and J. Grossmann and J. Hrubec and M. Jeitler and A. K{\"o}nig and N. Krammer and I. Kr{\"a}tschmer and D. Liko and T. Madlener and I. Mikulec and E. Pree and N. Rad and H. Rohringer and J. Schieck and R. Sch{\"o}fbeck and M. Spanring and D. Spitzbart and W. Waltenberger and J. Wittmann and Wulz, \{C. E.\} and M. Zarucki and V. Chekhovsky and V. Mossolov and \{Suarez Gonzalez\}, J. and \{Abu Zeid\}, S. and F. Blekman and J. D'Hondt and \{De Bruyn\}, I. and \{De Clercq\}, J. and K. Deroover and F. Beaudette and \{Granierde Cassagnac\}, R. and C. Ochando and P. Paganini and A. Zabi and A. Zghiche and \{De Wit\}, A.",

note = "Publisher Copyright: {\textcopyright} 2018 The Author(s)",

year = "2019",

month = feb,

day = "10",

doi = "10.1016/j.physletb.2018.11.063",

language = "English",

volume = "789",

pages = "643--665",

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

issn = "0370-2693",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Non-Gaussian elliptic-flow fluctuations in PbPb collisions at sNN=5.02TeV

AU - CMS Collaboration

AU - Sirunyan, A. M.

AU - Tumasyan, A.

AU - Adam, W.

AU - Ambrogi, F.

AU - Asilar, E.

AU - Bergauer, T.

AU - Brandstetter, J.

AU - Brondolin, E.

AU - Dragicevic, M.

AU - Erö, J.

AU - Flechl, M.

AU - Friedl, M.

AU - Frühwirth, R.

AU - Ghete, V. M.

AU - Grossmann, J.

AU - Hrubec, J.

AU - Jeitler, M.

AU - König, A.

AU - Krammer, N.

AU - Krätschmer, I.

AU - Liko, D.

AU - Madlener, T.

AU - Mikulec, I.

AU - Pree, E.

AU - Rad, N.

AU - Rohringer, H.

AU - Schieck, J.

AU - Schöfbeck, R.

AU - Spanring, M.

AU - Spitzbart, D.

AU - Waltenberger, W.

AU - Wittmann, J.

AU - Wulz, C. E.

AU - Zarucki, M.

AU - Chekhovsky, V.

AU - Mossolov, V.

AU - Suarez Gonzalez, J.

AU - Abu Zeid, S.

AU - Blekman, F.

AU - D'Hondt, J.

AU - De Bruyn, I.

AU - De Clercq, J.

AU - Deroover, K.

AU - Beaudette, F.

AU - Granierde Cassagnac, R.

AU - Ochando, C.

AU - Paganini, P.

AU - Zabi, A.

AU - Zghiche, A.

AU - De Wit, A.

PY - 2019/2/10

Y1 - 2019/2/10

N2 - Event-by-event fluctuations in the elliptic-flow coefficient v2 are studied in PbPb collisions at sNN=5.02 TeV using the CMS detector at the CERN LHC. Elliptic-flow probability distributions p(v2) for charged particles with transverse momentum 0.3T<3.0GeV/c and pseudorapidity |η|<1.0 are determined for different collision centrality classes. The moments of the p(v2) distributions are used to calculate the v2 coefficients based on cumulant orders 2, 4, 6, and 8. A rank ordering of the higher-order cumulant results and nonzero standardized skewness values obtained for the p(v2) distributions indicate non-Gaussian initial-state fluctuations. Bessel–Gaussian and elliptic power fits to the flow distributions are studied to characterize the initial-state spatial anisotropy.

AB - Event-by-event fluctuations in the elliptic-flow coefficient v2 are studied in PbPb collisions at sNN=5.02 TeV using the CMS detector at the CERN LHC. Elliptic-flow probability distributions p(v2) for charged particles with transverse momentum 0.3T<3.0GeV/c and pseudorapidity |η|<1.0 are determined for different collision centrality classes. The moments of the p(v2) distributions are used to calculate the v2 coefficients based on cumulant orders 2, 4, 6, and 8. A rank ordering of the higher-order cumulant results and nonzero standardized skewness values obtained for the p(v2) distributions indicate non-Gaussian initial-state fluctuations. Bessel–Gaussian and elliptic power fits to the flow distributions are studied to characterize the initial-state spatial anisotropy.

KW - Event-by-event elliptic flow

KW - Non-Gaussian flow fluctuations

KW - Unfolding

U2 - 10.1016/j.physletb.2018.11.063

DO - 10.1016/j.physletb.2018.11.063

M3 - Article

AN - SCOPUS:85060298610

SN - 0370-2693

VL - 789

SP - 643

EP - 665

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 -

Non-Gaussian elliptic-flow fluctuations in PbPb collisions at sNN=5.02TeV

Résumé

Accès au document

Empreinte digitale

Contient cette citation

Non-Gaussian elliptic-flow fluctuations in PbPb collisions at s_NN=5.02TeV