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μ→eγ at a rate of one out of 109 muon decays?
1977
Physics Letters B
Preserved Fulltext
It is proposed that lepton number conservation, purely left-handed charged weak currents and vanishing neutrino masses are a hmmng case of a parity symmetric SU2 L × SU R × U2 V gauge theory. Right-handed neutrinos acqmre a lepton number violating mass, leaving an SU2 L x U1 subgroup unbroken. Consequences for the decay ~ ~ e3' are studied.
doi:10.1016/0370-2693(77)90435-x
fatcat:gmofkmfwifgn3eee2j3zuuxm5a