Leptogenesis and dark matter detection in a TeV scale neutrino mass model with inverted mass hierarchy

TL;DR

This paper explores a TeV-scale neutrino mass model with inverted hierarchy, demonstrating successful leptogenesis and potential links to dark matter detection and low-energy experiments.

Contribution

It presents a radiative neutrino mass model with an additional doublet that achieves leptogenesis and connects neutrino masses with dark matter in a novel way.

Findings

Resonant leptogenesis is effective at TeV scale with mild degeneracy.

The model links neutrino mass generation to dark matter and low-energy experimental signals.

Potential observable signatures in dark matter detection and neutrinoless double beta decay.

Abstract

Realization of the inverted hierarchy is studied in the radiative neutrino mass model with an additional doublet, in which neutrino masses and dark matter could be induced from a common particle. We show that the sufficient baryon number asymmetry is generated through resonant leptogenesis even for the case with rather mild degeneracy among TeV scale right-handed neutrinos. We also discuss the relation between this neutrino mass generation mechanism and low energy experiments for the DM direct search, the neutrinoless double $\beta$ decay and so on.