LEPTONIC FRITZSCH MATRICES AND NEUTRINO OSCILLATIONS

It was recently shown by the authors that the Fritzsch Ansatz for the quark mass matrices prescribed at the supersymmetric grand unified scale is compatible with a moderately heavy top quark (m(t) congruent-to 120-150 GeV). Here we extend the Ansatz to incorporate the charged leptons and the neutrinos. It is found that the nu(e)-nu(mu) mixing angle is small and consistent with the MSW solution of the solar neutrino puzzle. Furthermore, the model predicts observable nu(mu)-nu(tau) oscillations with sin(2)2theta(mutau) congruent-to 0.1 and nu(tau) mass in the 1-3 eV range.