The Conservation Laws in the Lepton Process and Two Kinds of Neutrinos

An attempt is made to forbid. the unwanted processes involving leptons by assuming t};te conserva-tion law of lepton number and that of neutrino charge. To do this, suitable assignment of these quantum numbers to each lipton is necessllf'y in addition to the. ass).(mption of fhe existence of two kinds of neutrinos (a right circularly polarized neutrino and a left polarized neutrino). The neutrino-less lepton processes are successfully forbidden, except for the lepton pair processes, and the theoretical predictions for the 1r-,u-e-decay and the {j-decay agree well with experiment. In the 1r-,u-e-decay and the {3-decay, the vector and axial vector couplings are preferable if the interaction Hamiltonians are written in the form of charge exchange theory. The other sort of unwanted processes than neutrino-less ones, IT~e+Y and IT~e+Y+r, are relatively (or dynamically) forbidden from the view-point of the universal Fermi interaction