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

Mukherjee, Ananya (Department of Physics, Tezpur University, Tezpur 784 028, India) ; Das, Mrinal Kumar (Department of Physics, Tezpur University, Tezpur 784 028, India)

18 October 2016

Abstract: 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 A4 flavor symmetry is being implemented as a leading contribution to the light neutrino mass matrix which usually gives rise to vanishing reactor mixing angle θ13 . Using a non-diagonal form of Dirac neutrino mass matrix and 3 σ 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 θ13 , 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.

Published in: Nuclear Physics B (2016)
Published by: Elsevier
DOI: 10.1016/j.nuclphysb.2016.10.008
License: CC-BY-3.0

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