Centrality Dependence of Identified Particle Elliptic Flow in Relativistic Heavy Ion Collisions at [math][mrow][msqrt][msub][mi][/mi][mrow][mi]N[/mi][mi]N[/mi][/mrow][/msub][/msqrt][mo]
Author | : |
Publisher | : |
Total Pages | : |
Release | : 2016 |
ISBN-10 | : OCLC:971476447 |
ISBN-13 | : |
Rating | : 4/5 (47 Downloads) |
Download or read book Centrality Dependence of Identified Particle Elliptic Flow in Relativistic Heavy Ion Collisions at [math][mrow][msqrt][msub][mi][/mi][mrow][mi]N[/mi][mi]N[/mi][/mrow][/msub][/msqrt][mo] written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Here, elliptic flow (v2) values for identified particles at midrapidity in Au + Au collisions measured by the STAR experiment in the Beam Energy Scan at the Relativistic Heavy Ion Collider at √sNN = 7.7-62.4 GeV are presented for three centrality classes. The centrality dependence and the data at √sNN = 14.5 GeV are new. Except at the lowest beam energies, we observe a similar relative v2 baryon-meson splitting for all centrality classes which is in agreement within 15% with the number-of-constituent quark scaling. The larger v2 for most particles relative to antiparticles, already observed for minimum bias collisions, shows a clear centrality dependence, with the largest difference for the most central collisions. Also, the results are compared with a multiphase transport (AMPT) model and fit with a blast wave model.