Sirunyan, A.M.Tumasyan, A.Adam, W.Ambrogi, F.Asilar, E.Bergauer, T.Vizan Garcia, J.M.2020-07-182020-07-1820190370-2693https://doi.org/10.1016/j.physletb.2018.11.063https://hdl.handle.net/11147/8572Event-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)eninfo:eu-repo/semantics/openAccessEvent-By-Event Elliptic FlowNon-Gaussian Flow FluctuationsUnfoldingArticle2-s2.0-8506029861010.1016/j.physletb.2018.11.06310.1016/j.physletb.2018.11.063