The 3-3-1 model with A_4 flavor symmetry

Details The 3-3-1 model with A_4 flavor symmetry The 3-3-1 model with A_4 flavor symmetry

2010-01-26

arxiv.org/abs/1001.4625v2

Phys.Rev.D81:053004,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

Version published by PRD

Scientific paper

10.1103/PhysRevD.81.053004

We argue that the A_4 symmetry as required by three flavors of fermions may well-embed in the SU(3)_C X SU(3)_L X U(1)_X gauge model. The new neutral fermion singlets as introduced in a canonical seesaw mechanism can be combined with the standard model lepton doublets to perform SU(3)_L triplets. Various leptoscalar multiplets such as singlets, doublets, and triplets as played in the models of A_4 are unified in single SU(3)_L antisextets. As a result, naturally light neutrinos with various kinds of mass hierarchies are obtained as a combination of type I and type II seesaw contributions. The observed neutrino mixing pattern in terms of the Harrison-Perkins-Scott proposal is obtained by enforcing of the A_4 group. The quark masses and Cabibbo-Kobayashi-Maskawa mixing matrix are also discussed. By virtue of very heavy antisextets the nature of the vacuum alignments of scalar fields can be given.

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