Speaker
Description
[Based on Phys.Rev. D100 (2019) no.3, 035009 by Soumita Pramanick]
In this scotogenic model based on $S3\times Z_2$ symmetry realistic neutrino mixing is obtained at one loop level.
In this model, two right-handed neutrinos are present. These two right-handed neutrinos
when are maximally mixed, one gets the form of the left-handed Majorana neutrino mass matrix
corresponding to $\theta_{13}=0$ and $\theta_{23}=\pi/4$ with solar mixing taking any value.
The choices of the solar mixing corresponding to Tribimaximal (TBM) with $\theta_{12}^0 = 35.26^\circ$,
Bimaximal (BM) with $\theta_{12}^0 = 45^\circ$ and Golden Ratio (GR) mixing with $\theta_{12}^0 = 31.7^\circ$ were discussed in this work.
A little shift from maximal mixing in between the two right-handed neutrinos could yield the non-zero value of $\theta_{13}$ , deviation of
$\theta_{23}$ from $\pi/4$ and small corrections to the solar mixing as well so as to make the mixings in agreement
with the neutrino oscillation data. There are also two $Z_2$ odd inert $SU(2)_L$ doublet scalars present in
the model, the lightest among which can be a dark matter candidate.
