1206.1570 (Ernest Ma et al.)

Scotogenic $A_4$ Neutrino Model for Nonzero $θ_{13}$ and Large
$δ_{CP}$    [PDF]

Ernest Ma, Alexander Natale, Ahmed Rashed

Assuming that neutrinos acquire radiative seesaw Majorana masses through their interactions with dark matter, i.e. scotogenic from the Greek 'scotos' meaning darkness, and using the non-Abelian discrete symmetry $A_4$, we propose a model of neutrino masses and mixing with nonzero $\theta_{13}$ and necessarily large leptonic CP violation, allowing both the normal and inverted hierarchies of neutrino masses, as well as quasi-degenerate solutions.

View original: http://arxiv.org/abs/1206.1570