We revisit the transport coefficients of heavy quarkonia moving in high-temperature QCD plasmas. The thermal width and mass shift for heavy quarkonia are closely related to the momentum diffusion coefficient and its dispersive counterpart for heavy quarks, respectively. For quarkonium at rest in plasmas the longitudinal gluon part of the color-singlet self-energy diagram is sufficient to determine the leading-order thermal width, whereas the momentum dependence is obtained from the transverse gluon channel. Using the quarkonium-gluon effective vertex based on the dipole interaction of color charges, we discuss the damping rate, the effective rest and kinetic mass shifts of slowly moving quarkonia and compare with the corresponding coefficients of heavy quarks.

我们重新审视了在高温 QCD 等离子体中移动的重夸克尼亚的传输系数。重夸克的热宽度和质量转移分别与重夸克的动量扩散系数及其色散对应物密切相关。对于在等离子体中静止的夸夸克，颜色单重态自能图的纵向胶子部分足以确定前导热宽度，而动量依赖性是从横向胶子通道获得的。使用基于色荷偶极相互作用的夸克-胶子有效顶点，讨论了慢速运动夸克的阻尼率、有效静止和动力学质量位移，并与重夸克的相应系数进行了比较。