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Advances in High Energy Physics
Volume 2014 (2014), Article ID 192536, 24 pages
Research Article

A New Flavor Symmetry in 3-3-1 Model with Neutral Fermions

1Department of Physics, Tay Nguyen University, 567 Le Duan, Buon Ma Thuot, Vietnam
2Hoang Ngoc Long, Institute of Physics, VAST, P.O. Box 429, Bo Ho, Hanoi 10000, Vietnam

Received 25 September 2013; Revised 29 January 2014; Accepted 30 January 2014; Published 2 April 2014

Academic Editor: Anastasios Petkou

Copyright © 2014 V. V. Vien and H. N. Long. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The publication of this article was funded by SCOAP3.


A new S4 flavor model based on gauge symmetry responsible for fermion masses and mixings is constructed. The neutrinos get small masses from only an antisextet of SU(3)L which is in a doublet under S4. In this work, we assume the VEVs of the antisextet differ from each other under S4 and the difference of these VEVs is regarded as a small perturbation, and then the model can fit the experimental data on neutrino masses and mixings. Our results show that the neutrino masses are naturally small and a deviation from the tribimaximal neutrino mixing form can be realized. The quark masses and mixing matrix are also discussed. The number of required Higgs multiplets is less and the scalar potential of the model is simpler than those of the model based on S3 and our previous S4 model. The assignation of VEVs to antisextet leads to the mixing of the new gauge bosons and those in the standard model. The mixing in the charged gauge bosons as well as the neutral gauge bosons is considered.