Bi-large neutrino mixings by radiative magnification

Abstract

Starting with the unification hypothesis of mixings of quarks and leptons and small quark-like mixings at the see-saw scale, we find that two large mixings for ν_e- νx03BC; andv μ- v t at the weak scale are obtained as a result of renormalization group evolution and radiative magnification if the three neutrinos are quasi degenerate in masses and possess the same CP parity. We also find that U_e3 remains small and well within the CHOOZ-Palo Verde bound since the corresponding V_ub for CKM mixing is very small. Several testable pedictions are pointed out.