Baryogenesis from Dark Sector

TL;DR

This paper introduces a new baryogenesis mechanism where dark sector asymmetry is first generated and then partially transferred to create the observed baryon asymmetry and dark matter density.

Contribution

It presents a novel reverse pathway of asymmetric dark matter scenario for baryogenesis, linking dark matter asymmetry to baryon asymmetry.

Findings

Successfully explains the observed baryon asymmetry.

Accounts for the correct dark matter density.

Provides a simple theoretical framework.

Abstract

We propose a novel mechanism to generate a suitable baryon asymmetry from dark (hidden) sector. This is a Baryogenesis through a reverse pathway of the "asymmetric dark matter" scenario. In the mechanism, the asymmetry of dark matter is generated at first, and it is partially transferred into a baryon asymmetry in the standard model sector. This mechanism enables us not only to realize the generation of the baryon asymmetry but also to account for the correct amount of dark matter density in the present universe within a simple framework.