Baryon asymmetry in the standard model revisited

TL;DR

This paper reevaluates the baryon asymmetry generated within the Standard Model using CKM CP violation, concluding it is insufficient to explain observed asymmetry, but the method can extend to beyond Standard Model theories.

Contribution

It provides a refined calculation of baryon asymmetry in the Standard Model and introduces a method adaptable to beyond Standard Model theories.

Findings

Baryon asymmetry calculated is close to theoretical limits.

Result is too small to explain observed baryon asymmetry.

Method can be extended to other theories.

Abstract

We compute the baryon asymmetry in the Universe in the framework of the standard model with the only source of CP violation in the CKM matrix. Our result is within and very close to the theoretical limits for baryon asymmetry found in the literature and too small to account for the experimentally required baryon asymmetry in standard cosmologies. The method can be easily extended to beyond standard model theories.