论文标题
重夸克尼亚的运输系数与重夸克系数相比
Transport coefficients of heavy quarkonia comparing with heavy quark coefficients
论文作者
论文摘要
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运输系数。重夸克尼亚的热宽度和质量转移与分别与重型夸克的动量扩散系数及其分散式相对应密切相关。对于等离子体中静止的Quarkonium，颜色单元的自能量图的纵向Gluon部分足以确定前阶热宽度，而动量依赖性是从横向gluon通道获得的。使用基于颜色电荷的偶极相互作用的Quarkonium-gluon有效顶点，我们讨论了阻尼速率，有效的休息和动力学质量和动力学的质量移动，缓慢移动Quarkonia，并与重夸克的相应系数进行比较。
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.
