论文标题
实际考虑有限覆盖对全球旋转对齐方位角依赖性的影响
Practical considerations for the effect of finite coverage on the azimuthal dependence of global spin alignment
论文作者
论文摘要
向量介子的全球自旋比对是研究非中心相对论重型离子碰撞中产生的系统的涡度场的强大探测器。由于全局自旋对齐的实验性可观察到对许多因素敏感，因此在测量媒介中的全局自旋比对时，需要对适当的校正进行适当的校正。在本文中，我们提出了一种方法，以纠正有限伪宽度覆盖范围的效果，当提取自旋对齐参数的方位角依赖性$ρ_{00} $。有限的伪长度覆盖范围对$ ϕ $梅森自旋对齐的方位角依赖性以及潜在存在的内在自旋对准效应的影响。本文中介绍的方法在蒙特卡洛模拟中进行了验证，它允许正确，准确地进行全局旋转对齐的方位角依赖性。
The global spin alignment of vector mesons is a powerful probe to study the vorticity field of the system produced in non-central relativistic heavy-ion collisions. Since the experimental observables of global spin alignment are sensitive to many factors, proper corrections are need to be taken care of when measuring the global spin alignment of vector mesons. In this paper, we propose a method to correct the effect of finite pseudo-rapidity coverage when extract the azimuthal dependence of spin alignment parameter $ρ_{00}$. The effects of the finite pseudo-rapidity coverage on the azimuthal dependence of $ϕ$ meson spin alignment and the potentially exist intrinsic spin alignment effects are taken into consideration. The method presented in this paper is verified in a Monte-Carlo simulation, it allows the measurements of azimuthal dependence of global spin alignment to be conducted properly and accurately.
