摘要
Relations between helicity coupling amplitude and L-S coupling amplitude are discussed. The equivalence condition for these two kinematic analysis methods and the limitations of the L-S coupling amplitude are also studied in this paper.
基金
国家自然科学基金，DURF of SEC，国家重点实验室基金，CTNP of LHIA National Lab of China，中国博士后科学基金
