arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2003.05852nucl-thhep-phnucl-ex
收藏

基于碰撞几何的相对论重离子碰撞三维初始条件

A collision geometry-based 3D initial condition for relativistic heavy-ion collisions

Chun Shen, Sahr Alzhrani

备注：
14 pages, 15 figures
发表信息：
Phys. Rev. C 102, 014909 (2020)
阅读 PDF
arXiv 页面 ↗HTML 原文 ↗

摘要：

我们提出了一种基于Glauber碰撞几何构造相对论性重离子碰撞3D初始条件的简单方法。当地的能量和动量守恒条件施加到我们的纵向配置文件的系统的初始能量密度和流速的参数化设置非平凡的约束。在相对论重离子对撞机（RHIC）的束能量扫描（BES）计划中，利用中心Au+Au碰撞中的带电强子快度分布对模型参数进行了标定，并对d+Au和外围Au+Au碰撞中的粒子快度分布进行了模型预测.对超质子同步加速器（SPS）能区的Pb+Pb碰撞进行了模拟计算，并与测量结果进行了比较。我们证明了在$\sqrt{s} \sim 10$ GeV的重离子碰撞中的椭圆流测量可以对夸克-胶子等离子体剪切粘度对温度和净重子化学势的依赖性设置强的约束。

英文摘要：

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.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

↑