FRITZSCH TEXTURE IN SUSY-SO(10) WITH LARGE NEUTRINO MIXING

Fritzsch's texture is imposed on all mass matrices in a SUSY-SO(10) vi a a family U(1)PQ symmetry. The observed charged fermion parameters fi x the nu-masses and mixing, while the later are evolved from the GUT s cale to low energies using the RG. Large sin2 2theta12 results as in a SUSY-GUT no intermediate scale is allowed, the RH-neutrino scale is t he unification one and this gives in our model DELTAm12(2) almost-equa l-to 10(-10) eV2, in accordance with the vacuum oscillation solution t o the solar-nu puzzle.