Scotogenic S3 symmetric generation of realistic neutrino mixing

Abstract

Realistic neutrino mixing is achieved at one-loop level radiatively using $S3\times Z_2$ symmetry. The model comprises of two right-handed neutrinos, maximally mixed to produce the structure of the left-handed Majorana neutrino mass matrix characterized by ${\theta }_{13}=0$, ${\theta }_{23}=\pi /4$ and any value of ${\theta }_{12}^0$ particular to the Tribimaximal (TBM), Bimaximal (BM) and Golden Ratio (GR) or other mixings. A small deviation from this maximal mixing between the two right-handed neutrinos could generate non-zero ${\theta }_{13}$, shifts of the atmospheric mixing angle ${\theta }_{23}$ from $\pi /4$ and also could correct the solar mixing angle ${\theta }_{12}$ by a small amount altogether in a single step. In this scotogenic mechanism of generating non-zero ${\theta }_{13}$ by shifting from maximal mixing in the right-handed neutrino sector, two $Z_2$ odd inert scalar $SU(2{)}_L$ doublets were used, the lightest of which can serve as a dark matter candidate.

arXiv comment15 pages, 2 figures, 3 tables, v2: version published in Physical Review D

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• Sequentially loop supressed fermion masses from a unique discrete symmetry
• Fermion mass hierarchy and g-2 anomalies in an extended 3HDM Model
• Phenomenology of an Extended $1+2$ Higgs Doublet Model with $S_3$ Family Symmetry
• $\mu$-$\tau$ symmetry breaking and CP violation in the neutrino mass matrix
• One-loop Type II Seesaw Neutrino Model with Stable Dark Matter Candidates
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• A comparative study between the modified Fritzsch and nearest neighbor interaction textures
• Fermion masses and mixings in a $U(1{)}_X$ model based on the $\Sigma (18)$ discrete symmetry
• Theory and phenomenology of Dirac neutrinos