核Drell-Yan过程与高能夸克的能量损失

摘要

In this paper,the quark energy loss effect in nuclear Drell-Yan has been disussed.By using two kinds of nuclear parton distributions(EKS98 and HKM01)and considering the quark energy loss effect,we calculate the differential cross section ratios of the Drell-Yan process in p-A collision and extract the value of quark energy loss.%借助于核Drell-Yan过程研究了夸克在核物质中传播时的能量损失效应。利用HKN01和EKS98两套束缚核子的部分子分布函数,在考虑夸克的能量损失后,计算了p-A碰撞的核Drell-Yan过程中的微分截面比,并且抽取出了夸克在核物质中传播时的能量损失值。