Programme

P.4 -- Poster, NCTP-39

Date: Tuesday, 29-07-2014

Time: 10h30 - 12h00

Neutrino mixing and CP violation in 3-3-1 model with S4 flavor symmetry

Vo Van Vien (1), Hoang Ngoc Long (2), and Dinh Phan Khoi (3)

(1): Department of Physics, Tay Nguyen University, 567 Le Duan, Buon Ma Thuot, Vietnam. (2): Institute of Physics, VAST, 10 Dao Tan, Ba Dinh, Hanoi, Vietnam (3): Department of Physics, Vinh University, 182 Le Duan, Vinh City, Nghe An, Vietnam

The 3-3-1 model proposed in 2011 based on discrete symmetry S4 responsible for the neutrino and quark masses is updated, in which the non-zero $\theta_{13}$ is focused. The new feature is adding a new $SU(3)_L$ anti-sextet lying in doublet under S4 which can result the non-zero $\theta_{13}$ without perturbation. The exact tribimaximal form obtained with the breaking S4 ->S3 in charged lepton sector while S4 is broken into a group, which is isomorphic to Klein four group (K) in neutrino sector. If both the breakings S4-> K and K -> Z2 are taken place in neutrino sector, the realistic neutrino spectrum is obtained without perturbation. The model predicts the Dirac CP violation phase $\delta=\frac{\pi}{2}$ and $\delta=\frac{3\pi}{2}$ with $\theta_{23}\neq \frac{\pi}{4}$.

Presenter: Viên Văn Võ