King, S.F. (2009) Tri-bimaximal neutrino mixing and ?13. Physics Letters B, 675 (3-4), 347-351. (doi:10.1016/j.physletb.2009.04.031).
Abstract
We propose an extension of tri-bimaximal mixing to include a non-zero reactor angle ?13 while maintaining the tri-bimaximal predictions for the atmospheric angle ?23=45° and solar angle ?12=35°. 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 A4, spontaneously broken by flavons with a particular vacuum alignment.
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