# Common origin of inverse seesaw and baryon asymmetry

## TL;DR

This paper proposes a mechanism where heavy fermions and Higgs singlets suppress Majorana masses in the inverse seesaw model, enabling leptogenesis to explain the universe's baryon asymmetry.

## Contribution

It introduces a novel suppression mechanism for Majorana masses in inverse seesaw models and links it to leptogenesis for baryon asymmetry.

## Key findings

- Majorana masses can be suppressed by heavy fermions and Higgs singlets.
- The suppressed Majorana masses facilitate leptogenesis.
- The mechanism explains the cosmic baryon asymmetry.

## Abstract

In the inverse seesaw scenario, several fermion singlets have a small Majorana mass term. We show such Majorana masses can be suppressed by some heavy fermion and/or Higgs singlets after a global symmetry is spontaneously broken. These interactions can also accommodate a leptogenesis mechanism to explain the cosmic baryon asymmetry.