论文标题
纵向流动与恒星的能量依赖性
Energy dependence of longitudinal flow decorrelation from STAR
论文作者
论文摘要
在伪范围$ |η|的纵向流动性纵向流动相关的测量值显示<1 $使用参考检测器在2.1 $ <|η_ {\ Mathrm {Ref}} | <$ 5.1在$ \ sqrt {s_ {nn}} $ = 27 GEV的au+au碰撞中。 $ v_2 $的流量解相关显示出强大的中心性依赖性，而$ v_3 $的中心依赖性较弱。将结果与200 GEV的AU+AU碰撞的结果进行比较，这是$η$缩放的函数，即beam-rapities缩放，即$η/y_ {beam} $。没有观察到$ v_2 $ deTorlation的能量依赖性，但对于$ v_3 $ deTorlation的清晰能源依赖性。这些结果为重型离子碰撞中初始状态几何形状的纵向结构提供了新的见解。
Measurements of longitudinal flow decorrelations for charged particles are presented in the pseudorapidity range $|η| < 1$ using a reference detector at 2.1 $< |η_{\mathrm{ref}}| <$ 5.1 in Au+Au collisions at $\sqrt{s_{NN}}$ = 27 GeV by STAR. The flow decorrelation for $v_2$ shows a strong centrality dependence, while a weak centrality dependence for $v_3$. Results are compared with the results in Au+Au collisions at 200 GeV as a function of $η$ scaled by beam-rapidity, i.e. $η/y_{beam}$. No energy dependence is observed for $v_2$ decorrelation, but clear energy dependence for $v_3$ decorrelation. These results provide new insights into the longitudinal structure of the initial-state geometry in heavy-ion collisions.
