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arXiv · 1011.2954

A Shift from Democratic to Tri-bimaximal Neutrino Mixing with Relatively Large theta_{13}

Zhi-zhong Xing
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Abstract

Recent neutrino oscillation data hint that the smallest neutrino mixing angle theta_{13} is possible to lie in the range 5^\circ \lesssim θ_{13} \lesssim 12^\circ. We show that reasonable perturbations to the democratic mixing pattern, which is geometrically related to the tri-bimaximal mixing pattern through an equal shift θ_* \simeq 9.7^\circ of two large mixing angles, can naturally produce a nearly tri-bimaximal neutrino mixing matrix V with sufficiently large theta_{13}. Two especially simple but viable scenarios of V are proposed and their phenomenological consequences are discussed.

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Zhi-zhong Xing. 2010-12-20. A Shift from Democratic to Tri-bimaximal Neutrino Mixing with Relatively Large theta_{13}. https://doi.org/10.1016/j.physletb.2010.12.031

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