Multi-particle azimuthal correlations for extracting event-by-event elliptic and triangular flow in Au+Au collisions at √sNN = 200 GeV

Adare, A. and Aidala, C. and Ajitanand, N.N. and Akiba, Y. and Alfred, M. and Bagoly, Attila and Csanád, Máté and Csörgő, Tamás and Kincses, Dániel and Lökös, Sándor and Nagy, Márton and Novák, Tamás and Sziklai, János István and Ujvári, Balázs (2019) Multi-particle azimuthal correlations for extracting event-by-event elliptic and triangular flow in Au+Au collisions at √sNN = 200 GeV. PHYSICAL REVIEW C, 99 (2). ISSN 2469-9985

Preview

Text 1804.10024.pdf Download (2MB) | Preview

Abstract

We present measurements of elliptic and triangular azimuthal anisotropy of charged particles detected at forward rapidity 1 < |η| < 3 in Au+Au collisions at √sNN = 200 GeV, as a function of centrality. The multiparticle cumulant technique is used to obtain the elliptic flow coefficients v2{2}, v2{4}, v2{6}, and v2{8}, and triangular flow coefficients v3{2} and v3{4}. Using the smallvariance limit, we estimate the mean and variance of the event-by-event v2 distribution from v2{2} and v2{4}. In a complementary analysis, we also use a folding procedure to study the distributions of v2 and v3 directly, extracting both the mean and variance. Implications for initial geometrical fluctuations and their translation into the final state momentum distributions are discusse.

Actions (login required)

Edit Item