Electromagnetic leptogenesis at the TeV scale

TL;DR

This paper presents a model of electromagnetic leptogenesis at the TeV scale, linking neutrino mass generation with observable collider signals, and compatible with current phenomenology.

Contribution

It introduces a simple extension of the Standard Model that enables electromagnetic leptogenesis through a discrete symmetry and TeV scale seesaw mechanism.

Findings

Achieves correct leptogenesis with resonant enhancement

Generates neutrino masses via TeV scale seesaw

Predicts potential signals at next-generation colliders

Abstract

We construct an explicit model implementing electromagnetic leptogenesis. In a simple extension of the Standard Model, a discrete symmetry forbids the usual decays of the right-handed neutrinos, while allowing for an effective coupling between the left-handed and right-handed neutrinos through the electromagnetic dipole moment. This generates correct leptogenesis with resonant enhancement and also the required neutrino mass via a TeV scale seesaw mechanism. The model is consistent with low energy phenomenology and would have distinct signals in the next generation colliders, and, perhaps even the LHC.