Deviation from tri-bimaximal neutrino mixing in A4 flavor symmetry
arXiv:0801.0181 · doi:10.1143/PTP.119.583
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.
12 pages, 18 figures, some discussions and references are added
Cited by in corpus (5)
- The Unique Horizontal Symmetry of Leptons
- Nonzero U_{e3}, CP violation and leptogenesis in a see-saw type softly broken A_4 symmetric model
- Soft supersymmetry breaking terms from D4 x Z2 lepton flavor symmetry
- Model-Independent Analysis of Tri-bimaximal Mixing -- a Softly-Broken Hidden or an Accidental Symmetry?
- Theory of the Neutrino Mass