Title: Semiclassical treatment of bottomonium suppression and regeneration in $p+{\rm Pb}$ collisions Show Chinese title

Title: 底onium抑制和再生的半经典处理在$p+{\rm Pb}$碰撞中

Abstract: We study bottomonium suppression in $p+ {\rm Pb}$ relative to $p+p$ collisions at center-of-mass energies of $\sqrt{s_{NN}}= 5.02$ and 8.16~TeV. Specifically, we combine cold nuclear matter effects (nuclear modifications of the parton densities, energy loss and momentum broadening) with those from hot nuclear matter (suppression and regeneration) by implementing the formation of a quark-gluon plasma in hydrodynamic simulations. Bottomonium transport in the quark-gluon plasma is evaluated semiclassically, employing two different reaction rates. The first includes quasi-free inelastic scattering and gluo-dissociation employing a perturbative coupling to the medium. The second is based on in-medium $T$-matrix calculations where the input potential is constrained by lattice quantum chromodynamics to extract the bottomonium masses and dissociation rates. These semiclassical results are compared to previous calculations in an open quantum systems approach and to the experimental data. Predictions for $\chi_b$ suppression at $\sqrt{s_{NN}} = 8.16$~TeV are also presented. Show Chinese abstract

Abstract: 我们研究在质心系能量为$\sqrt{s_{NN}}= 5.02$和 8.16~TeV 的$p+ {\rm Pb}$相对于$p+p$碰撞中的底子介子抑制。 具体而言，我们通过在流体动力学模拟中引入夸克胶子等离子体的形成，将冷核物质效应（部分子密度的核修改、能量损失和动量展宽）与热核物质效应（抑制和再生成）结合起来。 在夸克胶子等离子体中底子介子的传输是通过半经典方法评估的，采用了两种不同的反应速率。 第一种包括准自由非弹性散射和胶子解离，采用与介质的微扰耦合。 第二种基于介质中的$T$矩阵计算，其中输入势由格点量子色动力学约束，以提取底子介子的质量和解离速率。 这些半经典结果与开放量子系统方法中的先前计算以及实验数据进行了比较。 还提出了$\chi_b$在$\sqrt{s_{NN}} = 8.16$~TeV 下的抑制预测。