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http://bura.brunel.ac.uk/handle/2438/17723
Title: | Non-Gaussian elliptic-flow fluctuations in PbPb collisions at s<inf>NN</inf>=5.02TeV |
Authors: | Sirunyan, AM Tumasyan, A Adam, W Ambrogi, F Asilar, E Bergauer, T Brandstetter, J Brondolin, E Dragicevic, M Erö, J Flechl, M Friedl, M Frühwirth, R Ghete, VM Grossmann, J Hrubec, J Jeitler, M König, A Krammer, N Krätschmer, I Liko, D Madlener, T Mikulec, I Pree, E Rad, N Rohringer, H Schieck, J Schöfbeck, R Spanring, M Spitzbart, D Waltenberger, W Wittmann, J Wulz, CE Zarucki, M Chekhovsky, V Mossolov, V Suarez Gonzalez, J De Wolf, EA Di Croce, D Janssen, X Lauwers, J Van De Klundert, M Van Haevermaet, H Van Mechelen, P Van Remortel, N Abu Zeid, S Blekman, F D'Hondt, J De Bruyn, I De Clercq, J Deroover, K Flouris, G Lontkovskyi, D Lowette, S Marchesini, I Moortgat, S Moreels, L Python, Q Skovpen, K Tavernier, S Van Doninck, W Van Mulders, P Van Parijs, I Beghin, D Brun, H Clerbaux, B De Lentdecker, G Delannoy, H Dorney, B Fasanella, G Favart, L Goldouzian, R Grebenyuk, A Lenzi, T Luetic, J Maerschalk, T Marinov, A Seva, T Starling, E Vander Velde, C Vanlaer, P Vannerom, D Yonamine, R Zenoni, F Zhang, F Cimmino, A Cornelis, T Dobur, D Fagot, A Gul, M Khvastunov, I Poyraz, D Roskas, C Salva, S Tytgat, M Verbeke, W Zaganidis, N Bakhshiansohi, H Bondu, O Brochet, S |
Keywords: | Event-by-event elliptic flow;Non-Gaussian flow fluctuations;Unfolding |
Issue Date: | 2-Jan-2019 |
Publisher: | Elsevier |
Citation: | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2019, 789 pp. 643 - 665 |
Abstract: | The Author(s) 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. |
URI: | http://bura.brunel.ac.uk/handle/2438/17723 |
DOI: | http://dx.doi.org/10.1016/j.physletb.2018.11.063 |
ISSN: | 0370-2693 http://dx.doi.org/10.1016/j.physletb.2018.11.063 |
Appears in Collections: | Dept of Electronic and Electrical Engineering Research Papers |
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