论文标题
热QCD等离子体中重Quarkonia的能量损失
Energy loss of heavy quarkonia in hot QCD plasmas
论文作者
论文摘要
我们计算高温QCD等离子体中重夸克尼亚的能量损失，并研究对Quarkonium抑制的能量损失影响。基于Quarkonium的Bethe-Salpeter幅度得出的有效顶点，碰撞和辐射能量损失分别由Quarkonium-Gluon弹性散射和相关的Gluon-Bremsstrahlung确定。在能源状态$ e <m_υ^2/t $中，碰撞能量损失在辐射方面占主导地位，并且总能量损失随血浆温度和Quarkonium的初始能量而增加。我们的数值分析表明，$υ$（1s）的中等诱导的能量损失在较高动量下会更强地抑制，尽管与先前对重离子碰撞中quarkonium解离的估计值相比，发现能量损失效应很小。
We compute the energy loss of heavy quarkonia in high temperature QCD plasmas and investigate the energy loss effects on quarkonium suppression. Based on the effective vertex derived from the Bethe-Salpeter amplitude for quarkonium, the collisional and radiative energy loss are determined by quarkonium-gluon elastic scattering and the associated gluon-bremsstrahlung, respectively. In the energy regime $E<m_Υ^2/T$ the collisional energy loss is dominant over the radiative one, and the total energy loss increases with the plasma temperature and the initial energy of quarkonium. Our numerical analysis indicates that the medium-induced energy loss of the $Υ$(1S) results in stronger suppression at higher momentum, although the energy loss effects are found to be small compared with the previous estimates of quarkonium dissociation in heavy-ion collisions.
