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本文应用了费曼和盖尔曼所提出的普适费米弱相互作用和同位旋守恒的强相互作用计算了各种超子、K介子衰变的分枝比和平均寿命的比例。在计算时应用了微扰论,并在大动量处将相互作用截断。在应用了查尔斯·瓦纳所给出的相互作用常数和对其余两个常数作了一定的选择之后,得到的分枝比和平均寿命之比大部分和实验结果符合,最坏相差一个因子二。如果选择本文所采用的相互作用常数,可以改进前一篇源文中K+介子分枝比计算结果和实验的符合程度。本文计算表明V-A普适弱相互作用确实适用于K分子和超子衰变现象,表明在解释这些现象时,必须考虑到“很强”和“较强”两类强相互作用所分别产生的影响。此外,本文还表明Λ和∑应具有相同的相对宇称,K分子和核子、超子之间的四种强相互作用中必须至少有一对是膺标量耦合。The branching ratios of the decay of the hyperons, the ratios of the mean life times of the decay of various hyperons and the ratios of the life times of the hyperons to that of the K+-meson are calculated by using the universal Ferm weak interaction proposed by Feynman and Gell-Mann and the strong interaction proposed by Salam. The perturbation theory is used with a cut off in the region of large momentum. By using the coupling constants of the strong interaction given by Warner and choosing suitable values for the other two coupling constants remaing to be fixed most of the results of our calculation agree fairly well with the experiments. The worst result differs from the experimental Values at most bya facto of 2. The theoretical values of the branching ratios of K+-decay is derivedfrom this set of new coupling constants shown better agreement with the experiment than the results obtained in the previous paper.Our, calculation shows that the universal Fermi weak interaction of V-A type gives quite satisfactory explanation of the decay phenomena of K-mesons and the hyperons. It is also evident from our calculation, that these decays must be regarded as phenomena brought about by the joint action of the strong and weak interactions and that there exist two classes of strong interactions: the "very strong" one and the "medium strong" one. Our results favour the assumption that the ∧ and ∑ have the same parity. It also shows, that of the 4 terms of the strong interaction Hamiltonian given by Salam involving the K-meson at least two terma involve γ5 matrix.
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