The magnetic moment of the neutrino and its implications for neutrino signal from SN1987A

If the magnetic moment of the neutrino is to provide a resolution of the solar neutrino puzzle without violating the constraints implied by SN1987A observations, there must exist non-standard interactions of the right-handed neutrinos, which are able to trap them in the supernova core. We study one class of such interactions mediated by a singly charged Higgs boson, already proposed to yield a large magnetic moment of the neutrino, and suggest how the same interaction could provide a detectable signal in future neutrino counting experiments, e+e- → νanti νγ. (orig.)