A Three-Loop Neutrino Model with Global $U(1)$ Symmetry

TL;DR

This paper proposes a three-loop neutrino mass model with a global $U(1)$ symmetry at TeV scale, naturally including a bosonic dark matter candidate, and explores its phenomenological implications for collider searches.

Contribution

It introduces a novel three-loop neutrino mass model with a global $U(1)$ symmetry and analyzes its dark matter and collider phenomenology.

Findings

Identifies allowed mass and coupling regions for charged scalars and dark matter.

Highlights potential for future collider detection, especially at like-sign electron colliders.

Shows differences from the original Zee-Babu model.

Abstract

We study a three-loop induced neutrino model with a global $U(1)$ symmetry at TeV scale, in which we naturally accommodate a bosonic dark matter candidate. We discuss the allowed regions of masses and quartic couplings for charged scalar bosons as well as the dark matter mass on the analogy of the original Zee-Babu model, and show the difference between them. We also discuss the possibility of the collider searches, in which future like-sign electron liner collider could be promising.