小动量转移区高扭曲效应对核子自旋结构函数的影响

Higher-Twist Effects on the Nucleon Spin Structure Functions in the Small Q^2 Range

利用夸克模型计算了核子的自旋相关结构函数随Q2 的依赖关系 .在小动量转移区研究高扭曲效应a2 (Q2 ) ,d2 (Q2 )对结构函数的影响 .计算结果和其它的一些模型理论计算做了比较 .

Based on the quark model, the Q 2 evolution of the nucleon spin structure functions in the small Q 2 region is calculated. The higher-twist effects a 2(Q 2) and d 2(Q 2) are investigated. Comparison with other model calculations is also proceeded.