Lepton Masses and Mixing Angles with Spontaneously Broken O(3) Flavor Symmetry

Details Lepton Masses and Mixing Angles with Spontaneously Broken O(3) Flavor Symmetry Lepton Masses and Mixing Angles with Spontaneously Broken O(3) Flavor Symmetry

2000-09-25

arxiv.org/abs/hep-ph/0009280v2

JHEP 0012 (2000) 027

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, LaTeX2e, published version, typos corrected and some of the notations were improved

Scientific paper

10.1088/1126-6708/2000/12/027

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, m_\nu \sim 0.1 eV; (ii) The solar neutrino problem is solved by the MSW small mixing angle solution; (iii) The MNS mixing angle theta_{13} is unobservably small, theta_{13} = O(10^{-5}).

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