原子核密度经验公式与轻子-核DIS过程的核效应
Nuclear Density Empirical Formula of Nucleus and Nuclear Effect in lA DIS Process
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摘要: 在核密度模型基础之上利用原子核密度经验公式得到的核密度和利用电磁半径平方平均值得到的核密度分别计算了轻子核深度非弹性散射过程中的核效应函数RHe/D(x, Q2)， RLi/D(x, Q2)， RC/Li(x, Q2)， RCa/Li(x, Q2)， 发现利用由原子核密度经验公式得到的核密度计算核效应函数所得结果与NMC实验数据符合得较好， 并且优于用后者方法计算核效应函数的理论结果， 从而说明利用原子核密度经验公式研究核子结构函数核效应的合理性。 The nuclear effect functions in lA DIS process RHe/D(x, Q2)， RLi/D(x, Q2)， RC/Li(x, Q2) and RCa/Li(x, Q2) are calculated on the basis of the nuclear density model by using nuclear densities obtained from an empirical formula or the experimental values of the electromagnetic mean of radius square 〈r2〉， respectively．It is shown that the nuclear effect functions obtained from the empirical formula are in good agreement with the NMC experimental data， and better than the later ones．The empirical formula of the nuclear density can be used to study the nuclear effect of nucleon structure functions reasonably.Abstract: The nuclear effect functions in lA DIS process RHe/D(x, Q2)， RLi/D(x, Q2)， RC/Li(x, Q2) and RCa/Li(x, Q2) are calculated on the basis of the nuclear density model by using nuclear densities obtained from an empirical formula or the experimental values of the electromagnetic mean of radius square 〈r2〉， respectively．It is shown that the nuclear effect functions obtained from the empirical formula are in good agreement with the NMC experimental data， and better than the later ones．The empirical formula of the nuclear density can be used to study the nuclear effect of nucleon structure functions reasonably.
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