Neutrino Magnetic Moment and Solar Neutrino Experiments

Abstract

We have studied the effect of a non-vanishing neutrino magnetic moment \ ($μ_ν$) on the $ν_{\rm x}$ ({x=$e,μ,τ$}) elastic scattering off electrons for the Super-Kamiokande detector. The bounds on the $μ_ν$ we have obtained are comparable to that extracted from laboratory experiments. Furthemore, we outline the potential of the Borexino experiment which may be sensitive to neutrino magnetic moments $\lsim 10^{-10}μ_B$. In our analysis we have considered both cases of Majorana and Dirac neutrinos.