【摘要】 核Drell-Yan过程中的能量损失效应是不同于束缚核子部分子分布函数核效应的另外一种核效应。用G．T．Garvey和T．C．Peng提出的处理能量损失的方法分别计算了入射质子束能量E_beam为120 GeV,50 GeV的（p+W）/（p+D）的Drell-Yan微分截面比,对核Drell-Yan过程中的能量损失值与入射夸克在A核中的平均路径长度〈L〉_A的关系进行了讨论,提出用低能量的质子束、对核子数A为不同值的多种核子进行实验来进一步研究能量损失效应的建议。更多还原

【Abstract】 The energy loss of patrons in nucler matter is another nuclear effect,apart from the nuclear effect on the patton distribution in deep-inelastic scattering process.In our paper,employing a clear idea of quark energy loss in the nuclear medium presented by G.T.Garvey and J.C.Peng in their article,we measure the Drell-Yan production cross section ratios on W to D at 120 GeV and 50 GeV incent proton beams,discuss the dependence of energy loss rate on parton path length〈L〉_A,and present the prospects of using relatively low energy proton beams and several targets of differing A.更多还原