Pseudo-Majoron as Dark Matter

TL;DR

This paper explores a singlet Majoron model where the pseudo-Majoron, arising from a singlet scalar, serves as a testable dark matter candidate, linking neutrino mass generation with dark matter phenomenology.

Contribution

It introduces a model with a pseudo-Majoron as dark matter, connecting lepton number violation, neutrino masses, and dark matter in a testable framework.

Findings

Pseudo-Majoron can be a viable dark matter candidate.

Model predicts collider and detection signatures.

Links neutrino mass generation with dark matter properties.

Abstract

We consider the singlet Majoron model with softly broken lepton number. This model contains three right-handed neutrinos and a singlet scalar besides the standard model fields. The real part of the singlet scalar develops a vacuum expectation value to generate the lepton number violation for seesaw and leptogenesis. The imaginary part of the singlet scalar becomes a massive pseudo-Majoron to be a dark matter candidate with testability by colliders, direct detection experiments and neutrino observations.