Intercomparison of flow measurements at RHIC experiments

International Conference on Particle Physics and Astrophysics

Vdovkina, S.S.^1

National Research Nuclear University MEPhI, Moscow Engineering Physics Institute, Kashirskoe highway 31, Moscow

115409, Russia^1

关键词: Au+Au collisions;    Charged hadrons;    Collective flow;    Intercomparisons;    Measurements of;    Particle production;    Relativistic heavy ion collision;    Star measurements;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/675/2/022014/pdf
DOI  :  10.1088/1742-6596/675/2/022014

来源: IOP

【 摘 要 】

The measurements of collective flow effects in particle production have provided invaluable insights on the transport properties of the strongly interacting matter produced in relativistic heavy-ion collisions at RHIC. The detailed comparison of flow measurements from PHENIX and STAR experiments at RHIC have been presented and discussed. For elliptic flow v2of charged hadrons from Au+Au collisions at 200 GeV the two data sets overlap excellently for centralities > 20%, they increasingly diverge at small centralities, with a 30% difference between STAR an PHENIX in the 0-5% centrality bin. For v3values the agreement is much worse and coming from the difference in STAR measurements. More investigations are needed to understand the reason for such differences.