Just so oscillations in supersymmetric standard model
Anjan S. Joshipura, Marek Nowakowski
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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