Just so oscillations in supersymmetric standard model
Abstract
We analyze the spectrum and mixing among neutrinos in the minimal supersymmetric standard model with explicit breaking of R parity. It is shown that ( i) the mixing among neutrinos is naturally large and ( ii) the non zero neutrino mass is constrained to be ≤ 10-5 eV from arguments based on baryogenesis. Thus vacuum oscillations of neutrinos in this model may offer a solution of the solar neutrino problem. The allowed space of the supersymmetric parameters consistent with this solution is determined.
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