"Table 358" of "Centrality dependence of identified particles in relativistic heavy ion collisions at sqrt(s)= 7.7-62.4 GeV"

BNL-RHIC. Elliptic flow ($v_{2}$) 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 $\sqrt{s_{NN}}$ = 7.7-62.4 GeV are presented for three centrality classes. The centrality dependence and the data at $\sqrt{s_{NN}}$ = 14.5 GeV are new. Except at the lowest beam energies we observe a similar relative $v_{2}$ baryon-meson splitting for all centrality classes which is in agreement within 15% with the number-of-constituent quark scaling. The larger $v_{2}$ 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 Model and fit with a Blast Wave model.BNL-RHIC。本数据集收录相对论重离子对撞机（Relativistic Heavy Ion Collider, RHIC）束流能量扫描实验中，STAR合作组在√s_NN=7.7~62.4 GeV的Au+Au碰撞快度中点处测得的已鉴别粒子椭圆流（elliptic flow, $v_2$）数值，共覆盖三种中心度区间。其中中心度依赖关系以及√s_NN=14.5 GeV处的测量数据为首次公开的新增结果。除最低束流能量区间外，所有中心度区间内均观测到相似的重子-介子相对$v_2$分裂现象，该结果与组分夸克数标度的偏差在15%以内。此前在最小偏置碰撞中已观测到的多数粒子$v_2$大于其反粒子的现象，呈现出显著的中心度依赖性，在最中心的碰撞事件中该差异最为显著。此外，本研究还将实验结果与多相输运模型（Multiphase Transport Model）进行了对比，并采用爆轰波模型（Blast Wave model）完成拟合。