SUPERSYMMETRIC RESOLUTION OF SOLAR AND ATMOSPHERIC NEUTRINO PUZZLES

Renormalizable lepton number violating interactions that break R parit y can induce a Majorana mass for neutrinos. Based on this, we show tha t it is possible to obtain a phenomenologically viable neutrino mass m atrix that can accommodate atmospheric neutrino data via nu(mu)-nu(tau ) mixing and the solar neutrino data via either the large or small ang le MSW effect. We argue that such a mass matrix could result from an a pproximate discrete symmetry of the superpotential that forbids renorm alizable baryon number violating couplings.