Speaker
Prof.
Sankagiri Umasankar
(Indian Institute of Technology Bombay)
Description
We consider a neutrino mass model based on $A_4$ symmetry.
The spontaneous symmetry breaking in this model is chosen to obtain
tribimaximal mixing in the neutrino sector. We introduce $Z_2 \times Z_2$
invariant perturbations in this model which can give rise to acceptable
values of $\theta_{13}$ and $\delta_{CP}$. Perturbation in the charged
lepton sector alone can lead to viable values of $\theta_{13}$, but cannot
generate $\delta_{CP}$. Perturbation in the neutrino sector alone can lead
to acceptable $\theta_{13}$ and maximal CP violation. By adjusting the
magnitudes of perturbations in both sectors, it is possible to obtain
any value of $\delta_{CP}$.
additional information
eprint number: arXiv:1504.04034
Primary author
Prof.
Sankagiri Umasankar
(Indian Institute of Technology Bombay)
Co-authors
Mr
Abhish Dev
(Indian Institute of Technology Bombay)
Prof.
P. Ramadevi
(Indian Institute of TechnologyBombay)
