Neutrino phenomenology and scalar Dark Matter with A(4) flavor symmetry in Inverse and type II seesaw

摘要

We present a TeV scale seesaw mechanism for exploring the dark matter and neutrino phenomenology in the light of recent neutrino and cosmology data. A different realization of the Inverse seesaw (ISS) mechanism with A(4) flavor symmetry is being implemented as a leading contribution to the light neutrino mass matrix which usually gives rise to vanishing reactor mixing angle theta(13). Using a non-diagonal form of Dirac neutrino mass matrix and 3 sigma values of mass square differences we parameterize the neutrino mass matrix in terms of Dirac Yukawa coupling "y". We then use type II seesaw as a perturbation which turns out to be active to have a non-vanishing reactor mixing angle without much disturbing the other neutrino oscillation parameters. Then we constrain a common parameter space satisfying the non-zero theta(13), Yukawa coupling and the relic abundance of dark matter. Contributions of neutrinoless double beta decay are also included for standard as well as non-standard interaction. This study may have relevance in future neutrino and Dark Matter experiments. (C) 2016 The Author(s). Published by Elsevier B.V.