Mixed higher-order anisotropic flow and nonlinear response coefficients of charged particles in PbPb collisions at s NN =2.76 and 5.02TeV
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
Anisotropies in the initial energy density distribution of the quark-gluon plasma created in high energy heavy ion collisions lead to anisotropies in the azimuthal distributions of the final-state particles known as collective anisotropic flow. Fourier harmonic decomposition is used to quantify these anisotropies. The higher-order harmonics can be induced by the same order anisotropies (linear response) or by the combined influence of several lower order anisotropies (nonlinear response) in the initial state. The mixed higher-order anisotropic flow and nonlinear response coefficients of charged particles are measured as functions of transverse momentum and centrality in
PbPb
collisions at nucleon-nucleon center-of-mass energies
s
NN
=
2.76
and 5.02
TeV
with the CMS detector. The results are compared with viscous hydrodynamic calculations using several different initial conditions, as well as microscopic transport model calculations. None of the models provides a simultaneous description of the mixed higher-order flow harmonics and nonlinear response coefficients.
PbPb
collisions at nucleon-nucleon center-of-mass energies
s
NN
=
2.76
and 5.02
TeV
with the CMS detector. The results are compared with viscous hydrodynamic calculations using several different initial conditions, as well as microscopic transport model calculations. None of the models provides a simultaneous description of the mixed higher-order flow harmonics and nonlinear response coefficients.
Date Issued
2020-06-13
Date Acceptance
2020-03-14
Citation
European Physical Journal C: Particles and Fields, 2020, 80 (6)
ISSN
1124-1861
Publisher
Springer Verlag (Germany)
Journal / Book Title
European Physical Journal C: Particles and Fields
Volume
80
Issue
6
Copyright Statement
© CERN for the benefit of the CMS collaboration 2020. Funded by SCOAP3. This article is licensed under a Creative Commons Attri-bution 4.0 International License, which permits use, sharing, adaptation,distribution and reproduction in any medium or format, as long as yougive appropriate credit to the original author(s) and the source, pro-vide a link to the Creative Commons licence, and indicate if changeswere made. The images or other third party material in this articleare included in the article’s Creative Commons licence, unless indi-cated otherwise in a credit line to the material. If material is notincluded in the article’s Creative Commons licence and your intendeduse is not permitted by statutory regulation or exceeds the permit-ted use, you will need to obtain permission directly from the copy-right holder. To view a copy of this licence, visithttp://creativecommons.org/licenses/by/4.0/.
Identifier
https://www.ncbi.nlm.nih.gov/pubmed/32589167
PII: 7834
Subjects
CMS Collaboration
hep-ex
hep-ex
nucl-ex
0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
0206 Quantum Physics
Nuclear & Particles Physics
Publication Status
Published
Coverage Spatial
France
Article Number
ARTN 534