Speaker
Ivo de Medeiros Varzielas
(CFTP, IST)
Description
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 a quasi-degenerate neutrino mass spectrum and to near
tri-bi-maximal mixing.
Authors
Graham Ross
(Theoretical Physics, Oxford University)
Ivo de Medeiros Varzielas
(CFTP, IST)
Mario Serna
(Theoretical Physics, Oxford University)
