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Quasi-degenerate neutrinos and tri-bi-maximal mixing

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, , Citation Ivo de Medeiros Varzielas 2009 J. Phys.: Conf. Ser. 171 012070 DOI 10.1088/1742-6596/171/1/012070

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1 CFTP, Departamento de Física, Instituto Superior Técnico, Av. Rovisco Pais, 1, 1049-001 Lisboa, Portugal

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1742-6596/171/1/012070

Abstract

Assuming high-energy tri-bi-maximal mixing we study the radiative running of leptonic mixing angles and obtain limits on the high-energy scale from requiring consistency with the observed mixing. 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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10.1088/1742-6596/171/1/012070