论文标题
基于碰撞几何的3D初始条件，用于相对论重型离子碰撞
A collision geometry-based 3D initial condition for relativistic heavy-ion collisions
论文作者
论文摘要
我们提出了一种基于Glauber碰撞几何形状的相对论重型离子碰撞构造3D初始条件的简单方法。局部能量和动量保护条件被施加在我们对系统初始能量密度和流速的纵向剖面的参数上设置非平凡的约束。在中央AU+AU碰撞中用带电的强子快速分布校准参数后，我们测试了d+au和外围au+au+au collisions在相对论重型离子碰撞器（RHIC）中的粒子快速分布（BES）中的粒子快速分布的模型。还对超级质子同步加速器（SPS）能量的PB+PB碰撞进行了模拟和比较。我们证明，在$ \ sqrt {s} \ sim 10 $ GEV时，重离子碰撞中的椭圆流量测量可以对Quark-Gluon等离子体剪切粘度对温度和净baryon化学势的依赖性设定强大的约束。
We present a simple way to construct 3D initial conditions for relativistic heavy-ion collisions based on the Glauber collision geometry. Local energy and momentum conservation conditions are imposed to set non-trivial constraints on our parameterizations of longitudinal profiles for the system's initial energy density and flow velocity. After calibrating parameters with charged hadron rapidity distributions in central Au+Au collisions, we test model predictions for particle rapidity distributions in d+Au and peripheral Au+Au collisions in the Beam Energy Scan (BES) program at Relativistic Heavy-Ion Collider (RHIC). Simulations and comparisons with measurements are also made for Pb+Pb collisions at Super Proton Synchrotron (SPS) energies. We demonstrate that elliptic flow measurements in heavy-ion collisions at $\sqrt{s} \sim 10$ GeV can set strong constraints on the dependence of Quark-Gluon Plasma shear viscosity on temperature and net baryon chemical potential.
