Neutrino Masses and Mixing from Supersymmetric Inflation

Abstract

A supersymmetric model based on a left-right symmetric gauge group is proposed where hybrid inflation, baryogenesis and neutrino oscillations are linked.This scheme, supplemented by a familiar ansatz for the neutrino Dirac masses and mixing of the two heaviest families and with the MSW resolution of the solar neutrino puzzle, implies that $m_{\nu_{\tau}}$ lies between 1 and 9 eV. The mixing angle $\theta_{\mu \tau}$ is predicted to lie in a narrow range which will be partially tested by the Chorus/Nomad experiment.