Abstract

The azimuthal anisotropy in particle emission in the transverse plane, known as anisotropic flow, is used to study the properties of strongly interacting hot and dense medium created in heavy-ion collisions. Anisotropic flow coefficients are the key observables which reflect the viscous hydrodynamic response to the initial spatial anisotropy, produced in the early stages of the collision. In previous studies performed by the Solenoidal Tracker At RHIC (STAR) collaboration at the Relativistic Heavy Ion Collider (RHIC) the increase of the elliptic flow (\({{{v}}_{2}}\)) difference between particles and antiparticles at the lower collision energies has been observed. In these proceedings we present the measurement of the two-particle elliptic and triangular flow correlations for identified particles performed by the STAR experiment. Our measurements are compared with the EPOS model simulations as well.

中文翻译：

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STAR实验中粒子反粒子椭圆流差的研究

摘要

横向粒子发射中的方位各向异性（称为各向异性流）用于研究重离子碰撞中产生的强相互作用的热和稠密介质的特性。各向异性流量系数是反映在碰撞早期产生的对初始空间各向异性的粘性流体动力响应的关键可观测指标。在相对论重离子对撞机（RHIC）上由RHIC（STAR）的螺线管跟踪器进行的先前研究中，椭圆流量的增加（\（{{{v}} _ {2}} \））在较低的碰撞能量下已观察到粒子与反粒子之间的差异。在这些程序中，我们介绍了由STAR实验对确定的颗粒进行的两颗粒椭圆和三角形流动相关性的测量。我们的测量结果也与EPOS模型仿真进行了比较。