Signature of the minimal supersymmetric standard model with right-handed neutrinos in long baseline experiments

Abstract

The effective interactions which violate lepton flavor accompanied with neutrinos (nLFV) are considered. Such new physics effects are expected to be measured in future neutrino oscillation experiments with a long baseline. They are induced by radiative corrections in the framework of the minimal supersymmetric standard model with right-handed neutrinos. We numerically evaluate the size of nLFV interactions in this framework. The slepton mixing is not only the origin of lepton flavor violation in the charged lepton sector (cLFV) but also that of the nLFV. We find that the nLFV couplings are strongly correlated with the corresponding cLFV processes, and they are constrained to be $\mathcal{O}({10}^{\ensuremath{-}5})$ times smaller than the standard four-Fermi couplings.