  The effective interactions which violate a lepton flavor accompanied with
neutrinos (nLFV) are considered. Such a new physics effect is expected to be
measured in future neutrino oscillation experiments with long baseline. They
are induced by radiative correction in the framework of the minimal
supersymmetric standard model with right-handed neutrinos. We numerically
evaluate the size of the couplings for nLFV interactions in this framework. The
slepton mixing is not only the origin of the 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 process, and they
are constrained at $\mathcal{O}(10^{-5})$ times smaller than the standard
four-Fermi couplings.
