Lepton mass and mixing in a simple extension of the Standard Model based on T7 flavor symmetry

V. V. Vien; H. N. Long

doi:10.1134/s1063778819020133

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arXiv · 1609.03895

Lepton mass and mixing in a simple extension of the Standard Model based on T7 flavor symmetry

V. V. Vien·H. N. Long

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Abstract

A simple Standard Model Extension based on $T_7$ flavor symmetry which accommodates lepton mass and mixing with non-zero $θ_{13}$ and CP violation phase is proposed. At the tree- level, the realistic lepton mass and mixing pattern is derived through the spontaneous symmetry breaking by just one vacuum expectation value ($v$) which is the same as in the Standard Model. Neutrinos get small masses from one $SU(2)_L$ doublet and two $SU(2)_L$ singlets in which one being in $\underline{1}$ and the two others in $\underline{3}$ and $\underline{3}^*$ under $T_7$ , respectively. The model also gives a remarkable prediction of Dirac CP violation $δ_{CP}=172.598^\circ$ in both normal and inverted hierarchies which is still missing in the neutrino mixing matrix.

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V. V. Vien, H. N. Long. 2016-09-13. Lepton mass and mixing in a simple extension of the Standard Model based on T7 flavor symmetry. https://doi.org/10.1134/s1063778819020133

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