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本文应用V-A型普适费米弱作用由协变性和规范不变性的考虑,利用微扰论,计算了π介子辐射衰变的分枝比。The relative probability of the radioative decay of π-meson to that of π-μ decay is calculated, assuming a universal Fermi interaction of V-A type. Terms in addition to those of usual gauge invariant treatment are calculated with perturbation theory. The result does not contradict the experiment.
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