Implications of fermionic dark matter on recent neutrino oscillation data**I would like to thank Rukmani Mohanta for helpful suggestions. This work is supported by DST-Inspire Fellowship division – IF130927

Abstract

We investigate flavor phenomenology and dark matter in the context of the scotogenic model. In this model, the neutrino masses are generated through radiative corrections at the one-loop level. Considering the neutrino mixing matrix to be of tri-bimaximal form with additional perturbations to accommodate the recently observed non-zero value of the reactor mixing angle θ13, we obtain the relation between various neutrino oscillation parameters and the model parameters. Working in a degenerate heavy neutrino mass spectrum, we obtain light neutrino masses obeying the normal hierarchy and also study the relic abundance of fermionic dark matter candidates, including coannihilation effects. A viable parameter space is thus obtained, consistent with neutrino oscillation data, relic abundance and various lepton flavor violating decays such as lα→lβγ and lα→3lβ.