Leptogenesis, Dark Matter and Higgs Phenomenology at TeV

TL;DR

This paper introduces a TeV-scale model connecting neutrino masses, leptogenesis, and dark matter, with new particles potentially observable at future colliders.

Contribution

It presents a novel TeV-scale framework linking neutrino mass generation, leptogenesis, and dark matter with testable predictions.

Findings

Neutrino masses arise from triplet Higgs vacuum expectation value.

Right-handed neutrinos can generate leptogenesis without resonance.

All new particles are accessible at future collider experiments.

Abstract

We propose an interesting model of neutrino masses to realize leptogenesis and dark matter at the TeV scale. A real scalar is introduced to naturally realize the Majorana masses of the right-handed neutrinos. We also include a new Higgs doublet that contributes to the dark matter of the universe. The neutrino masses come from the vacuum expectation value of the triplet Higgs scalar. The right-handed neutrinos are not constrained by the neutrino masses and hence they could generate leptogenesis at the TeV scale without subscribing to resonant leptogenesis. In our model, all new particles could be observable at the forthcoming Large Hardon Collider or the proposed future International Linear Collider.