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



Autor: Ivo de Medeiros Varzielas, Graham G. Ross, Mario Serna

Fuente: https://arxiv.org/







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