奇异粒子非轻子衰变的选择定则

本文用SU₃和G₂羣讨论了奇异粒子非轻子衰变的弱作用的变换性质。若强作用是SU₃对称的,可引进类似于同位旋(T旋)的V旋和U旋,和T旋一起来表示奇子非轻子衰变的选择定则。求得了简单选择定则情况下各个衰变过程的关系,其中包含了前人的结果而避免引用过多的假设。若强作用是G₂对称的,可引进包含同位旋在内的六种“旋”来给出选择定则。根据这些定则求得若干衰变过程的关系。证明了弱作用不能按G₂羣的七维或十四维表示变换。

SELECTION RULES IN NONLEPTONIC DECAYS OF STRANGE PARTICLES

In this paper we have discussed the SU₃ and G₂ transformation properties of the weak interactions. By assuming selection rules for certain operators in SU₃ different from isospin, a series of relations between the amplitudes of the nonleptonic decays of the strange particles are obtained, which include some results obtained in previous works. Assuming the G₂ symmetry of the strong interactions, we discuss the selection rules in these processes in a similar manner and show that the weak interactions cannot transform according the representations 7 or 14 of G₂.