标题： 格点QCD的重夸克扩散系数的夸克质量依赖性 显示英文标题

标题： Quark Mass Dependence of Heavy Quark Diffusion Coefficient from Lattice QCD

摘要： 我们首次研究了轻动力学夸克的格点QCD中重夸克动量扩散系数和空间扩散系数随夸克质量的依赖关系，所用的轻夸克对应于320 MeV的π介子质量。 我们发现，对于温度范围195 MeV $<T<$ 293 MeV，charm夸子和bottom夸子的空间扩散系数小于描述开放重味强子 $p_T$ 谱和椭圆流的唯象模型得到的结果。 显示英文摘要

摘要： We present the first study of the quark mass dependence of the heavy quark momentum and spatial diffusion coefficients using lattice QCD with light dynamical quarks corresponding to a pion mass of 320 MeV. We find that, for the temperature range 195 MeV $<T<$ 293 MeV, the spatial diffusion coefficients of the charm and bottom quarks are smaller than those obtained in phenomenological models that describe the $p_T$ spectra and elliptic flow of open heavy flavor hadrons.