在$30$ A NA61/SHINE/ $c$上测量Pb+Pb碰撞中相对于观众平面的各向异性流
NA61/SHINE measurements of anisotropic flow relative to the spectator plane in Pb+Pb collisions at $30$A GeV/$c$
摘要：
本文分析了2016年NA 61/SHINE实验收集的束流动量为30 $A$/ $c$的Pb+Pb碰撞各向异性流谐波。定向和椭圆流系数的测量相对于观众平面估计与抛射体观众探测器（PSD）。在不同的碰撞中心性类的横向动量的函数的流量系数报告。结果进行了比较与一个新的分析的NA 49数据的Pb+Pb碰撞在40 $A$ GeV使用前向量热计（VCal和RCal）的事件平面估计。
英文摘要：
We present an analysis of the anisotropic flow harmonics in Pb+Pb collisions at beam momenta of 30$A$ GeV/$c$ collected by the NA61/SHINE experiment in the year 2016. Directed and elliptic flow coefficients are measured relative to the spectator plane estimated with the Projectile Spectators Detector (PSD). The flow coefficients are reported as a function of transverse momentum in different classes of collision centrality. The results are compared with a new analysis of the NA49 data for Pb+Pb collisions at 40$A$ GeV using forward calorimeters (VCal and RCal) for event plane estimation.
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