Neutrino Masses and Mixing from Supersymmetric Inflation

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.