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arXiv · 0801.0181

Deviation from tri-bimaximal neutrino mixing in A4 flavor symmetry

Mizue Honda·Morimitsu Tanimoto
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Abstract

The tri-bimaximal mixing is a good approximation for the present data of neutrino mixing angles. The deviation from the tri-bimaximal mixing is discussed numerically in the framework of the A4 model. Values of \tan^2θ_{12}, \sin^2 2θ_{23} and |U_{e3}| deviate from the tri-bimaximal mixing due to the corrections of the vacuum alignment of flavon fields. It is remarked that \sin^2 2θ_{23} deviates scarcely from 1 while \sin^2θ_{12} can deviate from 1/3 considerably and \sinθ_{13} could be near the present experimental upper bound. The CP violating measure J_{CP} and the effective Majorana neutrino mass m_{ee} are also discussed.

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Mizue Honda, Morimitsu Tanimoto. 2008-01-09. Deviation from tri-bimaximal neutrino mixing in A4 flavor symmetry. https://doi.org/10.1143/ptp.119.583

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