Natural Mass Generation for the Sterile Neutrino
Abstract
We point out that there is a serious cosmological problem in the supersymmetric standard model if a sterile neutrino is responsible for the solar neutrino oscillation, and propose a possible solution to this problem. We show that our solution induces naturally a mass of order 10-4 eV for the sterile neutrino, which is deeply related to the mechanism of supersymmetry breaking.
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