Radiative Scaling Neutrino Mass and Warm Dark Matter

TL;DR

This paper proposes a novel model where neutrino masses are generated radiatively without a seesaw mechanism, with keV-scale fermions serving as warm dark matter, offering a new paradigm for cosmic structure formation.

Contribution

It introduces a radical 2006 model of neutrino mass that eliminates the seesaw mechanism and incorporates keV-scale fermions as warm dark matter candidates.

Findings

Neutrino masses are generated radiatively without large mass scales.

Fermions of about 10 keV serve as stable or long-lived warm dark matter.

The model provides a new framework for understanding cosmic structure formation.

Abstract

A new and radical scenario of the simple 2006 model of radiative neutrino mass is proposed, where there is no seesaw mechanism, i.e. neutrino masses are not inversely proportional to some large mass scale, contrary to the prevalent theoretical thinking. The neutral singlet fermions in the loop have masses of order 10 keV, the lightest of which is absolutely stable and the others are very long-lived. All are components of warm dark matter, which is a possible new paradigm for explaining the structure of the Universe at all scales.