https://doi.org/10.1140/epjc/s10052-022-10424-8
Regular Article - Theoretical Physics
Dark matter and low scale leptogenesis in a flavor symmetric neutrino two Higgs doublet model (
2HDM)
Department of Physics, Tezpur University, 784028, Tezpur, India
Received:
25
November
2021
Accepted:
14
May
2022
Published online:
27
May
2022
We have studied dark matter (DM) phenomenology, neutrinoless double beta decay (NDBD) and realized low scale leptogenesis in an extension of Standard Model (SM) with three neutral fermions, a scalar doublet and a dark sector incorporating a singlet scalar and a Dirac singlet fermion. A generic model based on 
flavor symmetry including five flavons is used to explain both normal and inverted hierarchy mass patterns of neutrino and also to accommodate the dark matter mass. In this extension of the 2HDM, the effective neutrino mass observed in 
is well within the experimental limit provided by KamLAND-ZEN. In order to validate DM within this model, we have checked relic abundance and free streaming length of the dark sector component, i.e. a Dirac singlet fermion constraining its mass in keV range. More importantly we have also realised low scale leptogenesis simultaneously within this framework and also the Dirac CP phase gets constrained with the results. Bound from LFV is also incorporated in order to constrain the Yukawa couplings. More importantly, we have analyzed the dependence of various phenomenology with decay parameter for different choice of arbitrary complex angles.
© The Author(s) 2022
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