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arXiv · 0904.3820

Deviation from tri-bimaximal mixing and flavor symmetry breaking in a seesaw type A4 model

Atsushi Hayakawa·Hajime Ishimori·Yusuke Shimizu·Morimitsu Tanimoto
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Abstract

We have studied the contribution of higher order corrections of the flavor symmetry breaking in the $A_4$ seesaw model with the supersymmetry. Taking account of possible higher dimensional mass operators, we predict the deviation from the tri-bimaximal lepton mixing for both normal hierarchy and inverted hierarchy of neutrino masses. We have found that the value of $\sin^2 2θ_{23}$ is larger than 0.96 and the upper bound of $\sin^2θ_{13}$ is 0.01. We have also examined the flavor changing neutral current of leptons from the soft SUSY breaking in slepton masses and A-terms within the framework of supergravity theory. Those magnitudes are enough suppressed to be consistent with experimental constraints.

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Atsushi Hayakawa, Hajime Ishimori, Yusuke Shimizu, Morimitsu Tanimoto. 2009-09-06. Deviation from tri-bimaximal mixing and flavor symmetry breaking in a seesaw type A4 model. https://doi.org/10.1016/j.physletb.2009.09.012

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