# Mirror Dirac leptogenesis

## TL;DR

This paper explores a mirror world model where Dirac neutrinos are generated via a seesaw mechanism, leading to high-scale leptogenesis that conserves lepton number, with detailed Boltzmann equations analyzing asymmetry enhancement.

## Contribution

It provides a comprehensive analysis of Dirac leptogenesis in a mirror world, including detailed Boltzmann equations and effects of flavor and symmetry breaking.

## Key findings

- Lepton flavor effects can significantly enhance asymmetry.
- Mirror symmetry breaking impacts baryon asymmetry.
- High-scale leptogenesis can occur without lepton number violation.

## Abstract

We consider a mirror world scenario, in which light Dirac neutrinos are generated from a seesaw mechanism and leptogenesis occurs at high scale without violating lepton number. After leptogenesis, the conservation laws of the theory imply the visible baryon-minus-lepton asymmetry to be equal to the mirror baryon-minus-lepton asymmetry. We extend previous work by presenting a detailed study of this Dirac leptogenesis mechanism by constructing the full set of Boltzmann Equations for both cases of unflavored and flavored regimes. We show that $Z_2$ breaking and lepton/mirror lepton flavor effects can be exploited to enhance the final baryon-minus-lepton asymmetry in our world by several orders of magnitude.