Slepton Mass Matrices, µ→eγ Decay and EDM in SUSYS4Flavor Model

We discuss slepton mass matrices in the S4 flavor model with SUSY SU(5) GUT. By considering the gravity mediation within the framework of supergravity theory, we estimate the SUSY breaking terms in the slepton mass matrices, which contribute to the µ → e + γ decay. We obtain a lower bound for the ratio of µ → eγ as 10−13 if mSUSY and m1/2 are below 500 GeV. The off diagonal terms of slepton mass matrices also contribute to EDM of leptons. The predicted electron EDM is around 10−29 − 10−28ecm. Our predictions are expected to be tested in the near future experiments.