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μ介子有反常作用,破坏了μ-e对称性。本文讨论了反常作用对弱作用过程的影响,分析了反常作用的电荷无关性和r5变换性质与μ蜕变弱作用常数的重正化之间的联系,证明了重正化后GV=G,GA=εG,ε=1+δ。利用这一结果,可以解释矢量流守恒假定下普适V-A费米弱作用理论在解释μ介子寿命时遇到的困难。从理论和实验的比较中定出δ=0.04,这是由μ蜕变定出的μ-e对称性的实验限度。The μ-e symmetry is destroyed by the anomalous interaction. We discuss the influence of the anomalous interaction on the weak-processes, and analyse the relation between the renormalization of the weak-interaction constant and such properties of the anomalous interaction as the charge independence and the γ5-transformation. The re-normalized constants are shown to be GV=G,GA=εG,ε=1+δ. This result is used to solve the difficulty which occurs when one uses the universal V-A Fermi weak-interaction theory and the conserved vector current hypothesis to explain the lifetime of the muon. Comparing the thory with various experiments, we obtain δ = 0.04, which may be interpreted as the experimental limitation of the μ-e symmetry.
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