Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Ambrogi, Federico and Asilar, Ece and Md. Ali, Mohd. Adli (2019) Non-Gaussian elliptic-flow fluctuations in PbPb collisions at √sNN = 5.02 TeV. Physics Letters, Section B, 789. pp. 643-665. ISSN 0370-2693
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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 < 3.0 GeV/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 nonGaussian initial-state fluctuations. Bessel–Gaussian and elliptic power fits to the flow distributions are studied to characterize the initial-state spatial anisotropy.
Item Type: | Article (Journal) |
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Additional Information: | 7861/71808 |
Uncontrolled Keywords: | Event-by-event elliptic flow; Non-Gaussian flow fluctuations; Unfolding |
Subjects: | Q Science > Q Science (General) Q Science > QC Physics |
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): | Kulliyyah of Science Kulliyyah of Science > Department of Physics |
Depositing User: | Dr Mohd Adli MD Ali |
Date Deposited: | 25 Apr 2019 10:51 |
Last Modified: | 12 Jul 2019 10:23 |
URI: | http://irep.iium.edu.my/id/eprint/71808 |
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