# Leptogenesis with testable Dirac neutrino mass generation

## TL;DR

This paper proposes a model where a TeV-scale Higgs doublet with tiny mixing to the standard model Higgs generates Dirac neutrino masses through sizable Yukawa couplings, linking neutrino mass and baryon asymmetry.

## Contribution

It introduces a testable Dirac neutrino mass generation mechanism involving a new Higgs doublet with small mixing and explores its role in baryon asymmetry.

## Key findings

- A TeV-scale Higgs doublet can produce tiny neutrino masses with sizable Yukawa couplings.
- Small Higgs mixing can be responsible for generating cosmic baryon asymmetry.
- The model offers testable predictions for neutrino mass and baryogenesis mechanisms.

## Abstract

A TeV-scale Higgs doublet can acquire a tiny vacuum expectation value via its small mixing with the standard model Higgs doublet. Ones then can realize a testable Dirac neutrino mass generation through the sizable Yukawa couplings among this new Higgs doublet, several right-handed neutrinos and the standard model lepton doublets. We show the small mixing between the two Higgs doublets can come from certain interactions for generating the cosmic baryon asymmetry.