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提出了改进的核密度模型,用唯象的方法找到了束缚核子内价夸克和海夸克的核效应的参数公式,其中利用了核密度与原子核的平均结合能之间的联系.利用该模型所得到的束缚核子内部分子分布函数,对强子与核的Drell_Yan过程的核效应给出了满意的解释,深化了对原子核内夸克分布受核效应影响的认识.
An improved nuclear density model is proposed, and the parametric formula for determining the nuclear effect of the intrinsic and quark-nuclear quarks and the sea quarks is found by the phenomenological method, and the relationship between the nuclear density and the average binding energy of the nuclei is utilized. The obtained bound inner-molecule distribution function of nucleon gives a satisfactory explanation for the nuclear effect of the Hadron-Yan process of the hadron and nucleus, deepens the understanding of the nuclear effect of the quark distribution in the nucleus.