Baryogenesis -- 40 Years Later

TL;DR

This paper reviews the developments in baryogenesis theories over 40 years, focusing on electroweak baryogenesis, Affleck-Dine mechanism, and leptogenesis, and discusses their connection to dark matter and future experimental tests.

Contribution

It provides an updated overview of three key baryogenesis models, highlighting recent theoretical progress and experimental prospects for testing these theories.

Findings

Electroweak baryogenesis remains viable with recent phase diagram insights.

Leptogenesis and Affleck-Dine mechanisms are closely linked to dark matter properties.

Upcoming LHC and gamma-ray data will help discriminate between models.

Abstract

The classical picture of GUT baryogenesis has been strongly modified by theoretical progress concerning two nonperturbative features of the standard model: the phase diagram of the electroweak theory, and baryon and lepton number changing sphaleron processes in the high-temperature symmetric phase of the standard model. We briefly review three viable models, electroweak baryogenesis, the Affleck-Dine mechanism and leptogenesis and discuss the prospects to falsify them. All models are closely tied to the nature of dark matter, especially in supersymmetric theories. In the near future results from LHC and gamma-ray astronomy will shed new light on the origin of the matter-antimatter asymmetry of the universe.