A See-Saw Model for Atmospheric and Solar Neutrino Oscillations
Abstract
We have constructed an explicit see-saw model containing two singlet neutrinos, one carrying a (B-3Le) gauge charge with an intermediate mass scale of O(1010) GeV along with a sterile one near the GUT (grand unification theory) scale of O(1016) GeV. With these mass scales and a reasonable range of Yukawa couplings, the model can naturally account for the near-maximal mixing of atmospheric neutrino oscillations and the small mixing matter-enhanced oscillation solution to the solar neutrino deficit.
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