Radiative neutrino mass via fermion kinetic mixing

TL;DR

This paper introduces a novel mechanism for generating neutrino masses through fermion kinetic mixing at one-loop level, offering an alternative to traditional mass matrix approaches and linking neutrino mass generation to dark matter stability.

Contribution

It presents a new radiative neutrino mass generation mechanism via fermion kinetic mixing, demonstrated within a Standard Model extension with a $U(1)_D$ symmetry.

Findings

Neutrino masses can be generated through kinetic mixing instead of mass matrices.

The mechanism connects neutrino mass generation with dark matter stability.

A specific model with $U(1)_D$ symmetry illustrates the approach.

Abstract

We propose that the radiative generation of the neutrino mass can be achieved by incorporating the kinetic mixing of fermion fields which arises radiatively at one-loop level. As a demonstrative example of the application of the mechanism, we present the particular case of the Standard Model extension by $U(1)_D$ symmetry. As a result, we show how neutrino masses can be generated via a kinetic mixing portal instead of a mass matrix with residual symmetries responsible for the stability of multicomponent dark matter.