Non-Gaussian elliptic-flow fluctuations in PbPb collisions at sNN=5.02TeV
Yazarlar (1)
Doç. Dr. Mustafa Numan BAKIRCI Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Makale Türü Açık Erişim Özgün Makale (SCOPUS dergilerinde yayınlanan tam makale)
Dergi Adı Physics Letters Section B Nuclear Elementary Particle and High Energy Physics
Dergi ISSN 0370-2693 Wos Dergi Scopus Dergi
Makale Dili İngilizce Basım Tarihi 02-2019
Cilt / Sayı / Sayfa 789 / 1 / 643–665 DOI 10.1016/j.physletb.2018.11.063
Makale Linki https://www.sciencedirect.com/science/article/am/pii/S0370269318309924?via%3Dihub
UAK Araştırma Alanları
Fen Bilimleri ve Matematik
Özet
Event-by-event fluctuations in the elliptic-flow coefficient v 2 are studied in PbPb collisions at s NN= 5.02 TeV using the CMS detector at the CERN LHC. Elliptic-flow probability distributions p (v 2) for charged particles with transverse momentum 0.3< p T< 3.0 GeV/c and pseudorapidity| η|< 1.0 are determined for different collision centrality classes. The moments of the p (v 2) distributions are used to calculate the v 2 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 (v 2) 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.
Anahtar Kelimeler
Event-by-event elliptic flow | Non-Gaussian flow fluctuations | Unfolding