标题： 相对论重离子碰撞的圆柱对称扩散模型 显示英文标题

标题： Cylindrically symmetric diffusion model for relativistic heavy-ion collisions

摘要： 一个具有圆柱对称性的相对论扩散模型被推导出来，该模型基于量子色动力学在时间上从初始状态演化到热平衡极限：通过适应现有的框架来表示相对论相空间轨迹的马尔可夫随机过程，得到了粒子数分布函数关于横向和纵向快速度的时间演化福克-普朗克方程。所得的部分演化分布函数被转化为横向动量和赝快度空间，并与欧洲核子研究中心大型强子对撞机 (LHC) 的电荷介子数据进行比较。 显示英文摘要

摘要： A relativistic diffusion model with cylindrical symmetry, which propagates an initial state based on quantum chromodynamics in time towards a thermal equilibrium limit, is derived from nonequilibrium-statistical considerations: Adapting an existing framework for Markovian stochastic processes representing relativistic phase-space trajectories, a Fokker-Planck equation is obtained for the time evolution of particle-number distribution functions with respect to transverse and longitudinal rapidity. The resulting partially-evolved distribution functions are transformed to transverse-momentum and pseudorapidity space, and compared with charged-hadron data from the CERN Large Hadron Collider (LHC).