Quark/lepton mass and mixing in S3 invariant model and CP violation of neutrino.

Weak bases of flavors (u,c), (d,s), (e,μ), and (νe,νμ) are assumed as the S3 doublet, and t, b, τ, and ντ are the S3 singlet; further, there are assumed S3 doublet Higgs (H1, H2) and S3 singlet Higgs HS. We suggest an S3 invariant model in which the Yukawa interactions constructed from these S3 doublets and singlets are S3 invariant. In this model, we can explain the quark sector mass hierarchy, quark mixing VCKM, and the measure of CP violation naturally. In the leptonic sector, neutrino masses are assumed to be constructed through the seesaw mechanism from the Majorana mass. The tri-bimaximal-like character of neutrino mixing VMNS can be explained dynamically without any other symmetry restrictions. It is predicted that a quasidegenerate mass spectroscopy of neutrino is favorable, and values of ∣VMNS∣13, the CP violation invariant measure J, and the effective Majorana mass ∣⟨m⟩∣ in(ββ)0ν are not so tiny. [ABSTRACT FROM AUTHOR]