核内核子部分子的逸出及共用与核子结构函数的核效应

Leakage and Overlap of the Partons Inside Nucleon and theNuclear Effect on the Nucleon Structure Function

在核介质中，可能存在非核子自由度，这些非核子自由度是核内核子中逸出的部分子组成的色单态集团。另外，由于核内部分子在核子运动方向上的不确定性，致使较小工的部分子的运动范围进入邻近核子，成为几个核子的共用部分子，在考虑了部分子逸出与共用的因素后，用有效核子质量一个参数，计算了束缚核子的结构函数，所得结果和ＮＭＣ组最新实验数据符合甚好。

In the nuclear medium, there are the non-nucleonic components. The leak-out panons, which form some colour-singlet parton clusters, are the origion of the non-nucleonic components. Meanwhile, the small x partons become co-used by several nucleons because the pamons ' longitudinal size extends over more than one nucleon. The nucleon effective mass can be successfully used as the only free parameter to adjust the sbucture function ratios recently measured by NMC.