Dirac neutrino magnetic moments in the left-right symmetric model

Voloshin, Vysotski and Okun have suggested that the apparent anticorrelation between the solar-neutrino flux and the sun-spot number can be understood if the electron neutrino has magnetic moment in the range 10-11-10-10 μB. The conventional left-right symmetric model of electroweak interactions is ideally suited for the electron neutrino to acquire a magnetic moment of this order if the model is supplemented with Zee's charged singlet Higgs. However, the problem of reconciling naturally the large value of the magnetic moment with the neutrino mass in the eV range still persists in the model. (orig.)