论文标题
相对论重离子对撞机的小碰撞系统中各向异性流的3D结构
The 3D structure of anisotropic flow in small collision systems at the Relativistic Heavy Ion Collider
论文作者
论文摘要
我们提出了（3+1）D动力学模拟，对相对论重离子对撞机（RHIC）的不对称核冲突。我们采用动力学初始状态模型，结合（3+1）D粘性相对论水动力学，我们探索了在200 GEV质量能量中心的RHIC小型系统扫描中各向异性流的速度依赖性。我们校准参数来描述中央$^3 $ he+au碰撞，并推断出D+AU和P+AU碰撞。我们的计算表明，可以通过使用来自不同快速性区域的参考流量向量来解释$ v_3（p_t）$差异的50％。这强调了纵向流反相关对不对称核碰撞中各向异性流量测量的重要性，以及对（3+1）d模拟的需求。我们还提出了D+AU碰撞中粒子光谱和各向异性流的束能依赖性的结果。
We present (3+1)D dynamical simulations of asymmetric nuclear collisions at the Relativistic Heavy Ion Collider (RHIC). Employing a dynamical initial state model coupled to (3+1)D viscous relativistic hydrodynamics, we explore the rapidity dependence of anisotropic flow in the RHIC small system scan at 200 GeV center of mass energy. We calibrate parameters to describe central $^3$He+Au collisions and make extrapolations to d+Au and p+Au collisions. Our calculations demonstrate that approximately 50% of the $v_3(p_T)$ difference between the measurements by the STAR and PHENIX Collaborations can be explained by the use of reference flow vectors from different rapidity regions. This emphasizes the importance of longitudinal flow decorrelation for anisotropic flow measurements in asymmetric nuclear collisions, and the need for (3+1)D simulations. We also present results for the beam energy dependence of particle spectra and anisotropic flow in d+Au collisions.
