Quasi-degenerate neutrinos and tri-bi-maximal mixing

Details Quasi-degenerate neutrinos and tri-bi-maximal mixing Quasi-degenerate neutrinos and tri-bi-maximal mixing

2008-11-13

arxiv.org/abs/0811.2226v1

Phys.Rev.D80:073002,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, 3 figures

Scientific paper

10.1103/PhysRevD.80.073002

We consider how, for quasi-degenerate neutrinos with tri-bi-maximal mixing at a high-energy scale, the mixing angles are affected by radiative running from high to low-energy scales in a supersymmetric theory. The limits on the high-energy scale that follow from consistency with the observed mixing are determined. We construct a model in which a non-Abelian discrete family symmetry leads both to a quasi-degenerate neutrino mass spectrum and to near tri-bi-maximal mixing.

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