Baryogenesis from sphaleron decoupling
High Energy Physics - Phenomenology
2024-06-18 v1 Cosmology and Nongalactic Astrophysics
Abstract
The electroweak sphaleron process breaks the baryon number conservation within the realms of the Standard Model of particle physics (SM). Recently, it is pointed out that its decoupling may provide the out-of-equilibrium condition required for baryogenesis. In this paper, we study such a scenario taking into account the baryon-number wash-out effect of the sphaleron itself to improve the estimate. We clarify the amount of CP violation required for this scenario to explain the observed asymmetry.
Keywords
Cite
@article{arxiv.2304.13999,
title = {Baryogenesis from sphaleron decoupling},
author = {Muzi Hong and Kohei Kamada and Jun'ichi Yokoyama},
journal= {arXiv preprint arXiv:2304.13999},
year = {2024}
}
Comments
16 pages, 5 figures