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

References in corpus (8)

• Deviation from tri-bimaximal neutrino mixing in A4 flavor symmetry
• Predictive flavour symmetries of the neutrino mass matrix
• Fermion masses and mixing in models with SO(10) x A_4 symmetry
• A SUSY A4 model for fermion masses and mixings
• Nonzero U_{e3}, CP violation and leptogenesis in a see-saw type softly broken A_4 symmetric model
• A_4 model for the quark mass matrices
• Soft supersymmetry breaking terms from D4 x Z2 lepton flavor symmetry
• Soft supersymmetry breaking terms from A4 lepton flavor symmetry