【摘要】 在非常数性K因子的情况下 ,根据核Drell Yan过程的高能强子h同原子核A碰撞和高能轻子l同原子核A深度非弹性碰撞的实验数据 ,在考虑QCD非微扰效应对深度非弹性散射部分子分布的影响及Drell Yan过程中的能量丢失效应 ,计算确定价夸克分布和海夸克分布核效应函数RAυ(x2 ) ,RAS(x2 )的变化 ,深化了对原子核内夸克分布受核效应影响的认识更多还原

【Abstract】 For investigating physical mechanism of the quark distributions due to the nuclear environment under the non-constant K condition the nuclear medium effect on the distribution functions of the sea and valence quarks R A v(x 2) R A s(x 2) is computed by considering QCD non-perturbation effect in the DIS process and energy loss effect in the nuclear Drell-Yan process. Calculated results show that non-perturbative terms or energy loss effect terms have a tiny influence on the nuclear medium effect on the sea quark distribution in the small x 2 region, while a strong influence on the valence quark’s. However in the large x 2 region, the non-perturbative or energy loss effects obviously affect the nuclear medium effect on the sea quark distribution.更多还原