Effects of the Transition Magnetic Moment of the Neutrino

Abstract

It is shown that a sizable transition magnetic moment between ${\ensuremath{\nu}}_{\ensuremath{\mu}}$ and a massive neutrino ${\ensuremath{\nu}}^{\ensuremath{'}}$ (of mass of approximately 100 MeV) leads to some detectable effects. These effects could be revealed significantly in ${\ensuremath{\nu}}_{{\ensuremath{\mu}}^{\ensuremath{-}}} ({\overline{\ensuremath{\nu}}}_{{\ensuremath{\mu}}^{\ensuremath{-}}})$ electron scattering, but would remain hidden in most other cases. It is also pointed out under what circumstances a large transition magnetic moment arises in gauge models.