Neutrino masses, mixings in a minimal SO(10) model and leptonic flavor violation

By Bhaskar Dutta, University of Regina

The minimal SO(10) model with one 10 and one 126 Higgs can fit the neutrino masses and mixing angles. Recently, a detailed analysis shows that the fit of solar, atmospheric mixing angles and mass ratios in this very predictive minimal model requires the Kobayashi-Maskawa phase to be either 0 (Type I seesaw) or to be in the second/third quadrant (Type II seesaw)(hep-ph/0402113). In this talk, I propose a parity symmetric SO(10) model with an additional 120 Higgs multiplet. The parity symmetry makes the Yukawa matrices hermitian and all the parameters in Higgs sector are real. The model is more predictive since the number of parameters is less than the original minimal model. I will elaborate the predictions of this more minimal model. I will use the minimal SUGRA scenario to calculate the magnitude of lepton flavor violation and the electric dipole moments of leptons. I will also discuss the leptogenesis and proton decay in this model.