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

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 ${\sin }^{2}2{\theta }_{23}$ is larger than 0.96 and the upper bound of ${\sin }^2{\theta }_{13}$ 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.

15 pages, 8 figures, revised version

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• Tri-bimaximal Mixing and Cabibbo Angle in S4 Flavor Model with SUSY
• Revisiting the Quark-Lepton Complementarity and Triminimal Parametrization of Neutrino Mixing Matrix
• Cascade Textures and SUSY SO(10) GUT
• Revisiting Flavor Model and Leptogenesis
• Non-SUSY Lepton Flavor Model with 3HDM