Tri-bimaximal Neutrino Mixing and $θ_{13}$

Details Tri-bimaximal Neutrino Mixing and $θ_{13}$ Tri-bimaximal Neutrino Mixing and $θ_{13}$

2009-03-18

arxiv.org/abs/0903.3199v5

Phys.Lett.B675:347-351,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

Published version, 13 pages

Scientific paper

10.1016/j.physletb.2009.04.031

We propose an extension of tri-bimaximal mixing to include a non-zero reactor angle $\theta_{13}$ while maintaining the tri-bimaximal predictions for the atmospheric angle $\theta_{23}=45^o$ and solar angle $\theta_{12}=35^o$. We show how such tri-bimaximal-reactor mixing can arise at leading order from the(type I) see-saw mechanism with partially constrained sequential dominance. Partially constrained sequential dominance can be realized in GUT models with a non-Abelian discrete family symmetry, such as $A_4$, spontaneously broken by flavons with a particular vacuum alignment.

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