Neutrino magnetic moment and inert doublet dark matter in a radiative seesaw scenario

School of Physics, University of Hyderabad, Hyderabad - 500046, India

^* e-mail: rmsp@uohyd.ac.in
^** e-mail: krishnas542@gmail.com
^*** e-mail: dinesh.sin.187@gmail.com

Published online: 20 November 2024

Abstract

We illustrate neutrino mass and magnetic moment along with dark matter phenomenology in a Type-III radiative scenario. To achieve this, we extend the Standard Model with three vector-like fermion triplets and two inert doublets, which can provide a suitable framework for studying the above phenomenological aspects. The inert scalars contribute to the total relic density of dark matter in the universe. The neutrino aspects are realized at one-loop level with magnetic moment obtained through charged scalars, while neutrino mass gets contribution from charged and neutral scalars. Taking inert scalar upto 2 TeV and triplet fermion mass in a few TeV range, we obtain a common parameter space, compatible with experimental limits associated with both neutrino and dark matter sectors. Finally, we demonstrate that the model is able to provide neutrino magnetic moments in a wide range from 10⁻¹²µ_B to 10⁻¹⁰µ_B, meeting the bounds of various experiments such as Super-K, TEXONO, Borexino and XENONnT.