4.2 Article

Neutrino mixing with nonzero θ13 and CP violation in the 3-3-1 model based on S4 flavor symmetry

Journal

INTERNATIONAL JOURNAL OF MODERN PHYSICS A
Volume 30, Issue 17, Pages -

Publisher

WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0217751X1550102X

Keywords

Neutrino mass and mixing; nonstandard-model neutrinos; right-handed neutrinos; flavor symmetries; discrete symmetries; models beyond the standard model

Funding

  1. Vietnam National Foundation for Science and Technology Development (NAFOSTED) [103.01-2014.51]

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The 3-3-1 model proposed in 2011 based on discrete symmetry S-4 responsible for the neutrino and quark masses is updated, in which the nonzero theta(13) is focused. Neutrino masses and mixings are consistent with the most recent data on neutrino oscillations without perturbation. The new feature is adding a new SU(3)(L) anti-sextet lying in doublet under S-4 which can result the nonzero theta(13) without perturbation, and consequently, the number of Higgs multiplets required is less than those of other models based on non-Abelian discrete symmetries and the 3-3-1 models. The exact tribimaximal form obtained with the breaking S-4 -> Z(3) in charged lepton sector and S-4 -> K in neutrino sector. If both breakings S-4 -> K and K -> Z(2) are taken place in neutrino sector, the realistic neutrino spectrum is obtained without perturbation. The upper bound on neutrino mass and the effective mass governing neutrinoless double beta decay at the tree level are presented. The model predicts the Dirac CP violation phase delta = 292.45 degrees in the normal spectrum (with theta(23) not equal pi/4) and delta = 303.14 degrees in the inverted spectrum.

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