We show that the type-I seesaw, responsible for generating the light neutrino mass, itself is
capable of accommodating one of the three right handed neutrinos as a freeze-in type of …

In the classic type I seesaw mechanism with very heavy right-handed (RH) neutrinos, it is
possible to account for dark matter via RH neutrino portal couplings to a feebly interacting …

We address the notorious metastability of the Standard Model (SM) and promote it to a
model building task: What are the new ingredients required to stabilize the SM up to the …

A bstract The idea of this work is to investigate the constraints on the dark matter (DM)
allowed parameter space from high scale validity (absolute stability of Higgs vacuum and …

A bstract To understand the observed pattern of neutrino masses and mixing as well as to
account for the dark matter we propose a hybrid scoto-seesaw model based on the A 4 …

We propose a minimal seesaw extension to simultaneously account for realistic neutrino
mass and mixing, the baryon asymmetry of the Universe via leptogenesis and a viable dark …

A bstract Basic idea of this analysis is to achieve a two-component dark matter (DM)
framework composed of a scalar and a fermion, with non-negligible DM-DM interaction …

We propose a minimal model to simultaneously account for a realistic neutrino spectrum
through a type-I seesaw mechanism and a viable dark matter relic density. The model is an …

We propose a new gauged BL BL extension of the standard model where light neutrinos are
of Dirac type, naturally acquiring sub-eV mass after electroweak symmetry breaking, without …

A bstract We propose a B− L gauged extension of the Standard Model where light neutrino
masses arise from type III seesaw mechanism. Unlike the minimal B− L model with three …