标题： 关于纵向极化的$G_2$表现 显示英文标题

标题： On the $G_2$ Manifestation for Longitudinally Polarized

摘要： $G_2$结构函数对极化深度非弹性散射的贡献被稍作重新定义，以避免运动学零点。 其由 Burkhardt-Cottingham (BC) 积分规则所暗示的$Q^2$依赖性自然解释了广义 Gerasimov-Drell-Hearn (GDH) 积分规则的符号变化。 讨论了 BC 积分规则的现状及其他自旋过程的含义。 显示英文摘要

摘要： The contribution of the $G_2$ structure function to polarized deep inelastic scattering is slightly redefined in order to avoid kinematical zeros. Its strong $Q^2$-dependence implied by the Burkhardt-Cottingham (BC) sum rule naturally explains the sign change of the generalized Gerasimov-Drell-Hearn (GDH) sum rule. The status of the BC sum rule and implications for other spin processes are discussed.