Lepton Masses and Mixing Angles with Spontaneously Broken O(3) Flavor Symmetry
نویسنده
چکیده
We present a model based on an O(3) flavor symmetry and a minimal extension of the scalar sector to induce hierarchical breaking, O(3) → O(2) → SO(2) →nothing. The model naturally accounts for all the known lepton parameters and yields various interesting predictions for others: (i) Neutrinos are nearly degenerate, mν ∼ 0.1 eV; (ii) The solar neutrino problem is solved by the MSW small mixing angle solution; (iii) The MNS mixing angle θ13 is unobservably small, θ13 = O(10−5).
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