Theoretical Physics(DTP)
Physique théorique (DPT)
Bhaskar DUTTA
University of Regina
Minimal SO(10) Model for Neutrinos and Its Implications
The minimal renormalizable SO(10) models with one 10 and one 126 Higgs multiplet is considered. The primary goal is to reconcile the CKM CP violation with successful neutrino predictions. The most general type II and type I seesaw formula for neutrino masses that includes the effect of the right handed neutrino mass matrix are used. The potential problems and the solutions are discussed. The type I model is found to require an intermediate v_R scale which is lower than the standard GUT scale, however it is compatible with gauge coupling unification which happens around 10^{15.5} GeV and it requires a value of the supersymmetry parameter tanbeta larger than 30 to be compatible with the present neutrino data. The phenomenological implications of both type I and II models for neutrino mixings, lepton flavor violation, lepton edms and leptogenesis are presented. These predictions provide a new way to test these models.