Dirac dark matter in a radiative neutrino model

TL;DR

This paper introduces a minimal radiative neutrino mass model with a Dirac dark matter candidate stabilized by a Z3 symmetry, consistent with various experimental constraints.

Contribution

It presents a novel, simplified model incorporating Dirac neutrinos and inert doublets, with an efficient parameterization of Yukawa couplings for neutrino masses.

Findings

Model satisfies neutrino oscillation constraints

Compatible with dark matter detection limits

Has a large viable parameter space

Abstract

We propose a simple radiative neutrino mass scenario with a Dirac dark matter candidate, which is minimally realized by a Z3 symmetry. We introduce two Dirac neutrinos and two inert doublets. We demonstrate that the model has a large allowed region that satisfies the constraints from neutrino oscillation data, lepton flavor violations, direct/indirect detection of dark matter and dark matter relic density. We also propose an efficient parameterization of the neutrino Yukawa couplings, which reproduces a desired active neutrino mass matrix.