New ways to TeV scale leptogenesis

TL;DR

This paper proposes models extending the Standard Model with scalars that enable TeV-scale neutrino mass generation, are testable at the LHC, and support leptogenesis at TeV temperatures.

Contribution

It introduces new scalar-based models that simultaneously achieve TeV-scale neutrino masses, collider testability, and leptogenesis, filling a gap in existing theories.

Findings

Models successfully generate neutrino masses at TeV scale

Models are testable at the LHC through direct production

Leptogenesis can occur at TeV temperatures in these models

Abstract

We show that by adding to the standard model plus the type I seesaw different types of scalars, it is possible to construct models that satisfy the three requirements of (i) generating neutrino masses at the TeV scale, (ii) being testable at the LHC via direct production of new states, and (iii) allowing for leptogenesis at temperatures $T\sim O$(TeV).