论文标题
夸克 - 杜伦等离子体的电磁辐射来自电磁辐射
Electromagnetic radiation from the pre-equilibrium/pre-hydro stage of the quark-gluon plasma
论文作者
论文摘要
在相对论重型离子碰撞中产生的Quark-Gluon等离子体的平衡前/hydro阶段产生的光子是使用从Boltzmann方程溶液获得的Parton分布函数计算的。研究了最初的Gluon动量各向异性$ξ$和对饱和动量$ Q_S $的依赖的影响。我们看到，小$ q_s $会导致光子产量增强，而较大的$ q_s $会导致预平衡光子抑制，这是由于与实验能量密度匹配的严格限制。
Photons produced in the pre-equilibrium/pre-hydro stage of the quark-gluon plasma produced in relativistic heavy-ion collisions were computed using parton distribution functions obtained from solutions of the Boltzmann equation. The effect of the initial gluon momentum anisotropy $ξ$ and the dependence on the saturation momentum $Q_s$ was investigated. We see that small $Q_s$ results in a photon yield enhancement, whereas a larger $Q_s$ results in a pre-equilibrium photon suppression, owing to the strict constraint of matching to experimental energy density.
