tion. In this note, we show that the pre sent experimental data do not exclude the possible existence_ of the neutral current with .JS=l of a milli-weak level in the coupling strength. Our calculation is based on a method which is free from any specific dynamical model. We assume a semi-leptonic inter action with neutral V-A current with .JS=l as HN=Gw ~ e!!'J/6+m (luxl') +h.c. H,
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Hayashi et al. (1971) studied this question.