Quark/lepton mass and mixing in S_3 invariant model and CP-violation of neutrino

Abstract

Weak bases of flavors (u, c), (d,s), (e, μ), (ν_e,ν_μ) are assumed as the S_3 doublet and t, b, τ, {ν_τ} are the S_3 singlet and further there are assumed S_3 doublet Higgs (H_1, H_2) and S_3 singlet Higgs H_S. We suggest an S_3 invariant model in which the Yukawa interactions constructed from these S_3 doublets and singlets are S_3 invariant. In this model, we can explain the quark sector mass hierarchy, quark mixing V_{CKM} and measure of CP violation naturally. In the leptonic sector, neutrino masses are assumed to be constructed through the see-saw mechanism from the Majorana mass. The tri-bimaximal-like character of neutrino mixing V_{MNS} can be explained dynamically without any other symmetry restrictions. It is predicted that a quasi-degenerate mass spectroscopy of neutrino is favorable, and values of |V_{MNS}|_{13}, CP violation invariant measure J and the effective Majorana mass |<m>| in neutrino-less double beta decay are not so tiny.

arXiv comment21 pages with 2 PostScript figures

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• The double mass hierarchy pattern: simultaneously understanding quark and lepton mixing
• Scotogenic S3 symmetric generation of realistic neutrino mixing
• A neutrino mass model with S3 symmetry and see-saw interplay
• High-scale validity of a model with Three-Higgs-doublets
• Quark mixing in an $S_3$ symmetric model with two Higgs doublets
• An $S_3$ flavored left-right symmetric model of quarks
• Broken $S_{3\mathrm{L}}^{}\times S_{3\mathrm{R}}^{}$ Flavor Symmetry and Leptonic CP Violation
• Implications Of The Higgs Discovery On Physics Beyond The Standard Model