Mixed higher-order anisotropic flow and nonlinear response coefficients of charged particles in PbPb collisions at √sNN=2.76 and 5.02TeV
Issue Date
2020-06-13Author
CMS Collaboration
Publisher
SpringerOpen
Type
Article
Article Version
Scholarly/refereed, publisher version
Rights
© CERN for the benefit of the CMS collaboration 2020. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License.
Metadata
Show full item recordAbstract
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 sNN−−−√=2.76 and 5.02TeV 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.
Collections
Citation
Sirunyan, A.M., Tumasyan, A., Adam, W. et al. Mixed higher-order anisotropic flow and nonlinear response coefficients of charged particles in PbPb collisions at sNN−−−√=2.76 and 5.02TeV. Eur. Phys. J. C 80, 534 (2020). https://doi.org/10.1140/epjc/s10052-020-7834-9
Items in KU ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
We want to hear from you! Please share your stories about how Open Access to this item benefits YOU.