Atmospheric neutrino anomaly and supersymmetric inflation

Abstract A detailed investigation of hybrid inflation and the subsequent reheating process is performed within a μ -problem solving supersymmetric model based on a left-right symmetric gauge group. The process of baryogenesis via leptogenesis is especially studied. For ν μ , ν τ masses from the small angle MSW resolution of the solar neutrino problem and the recent results of the SuperKamiokande experiment, we show that maximal ν μ - ν τ mixing can be achieved. The required value of the relevant coupling constant is, however, quite small (∼10 −6 ).