Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/8572
Title: Non-Gaussian Elliptic-Flow Fluctuations in Pbpb Collisions at Snn=5.02tev
Authors: Sirunyan, A.M.
Tumasyan, A.
Adam, W.
Ambrogi, F.
Asilar, E.
Bergauer, T.
Vizan Garcia, J.M.
Keywords: Event-By-Event Elliptic Flow
Non-Gaussian Flow Fluctuations
Unfolding
Publisher: Elsevier B.V.
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 0.3<pT<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. © 2018 The Author(s)
URI: https://doi.org/10.1016/j.physletb.2018.11.063
ISSN: 0370-2693
Appears in Collections:Rectorate / Rektörlük
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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