On Preserving a B+L Asymmetry Produced in the Early Universe
High Energy Physics - Phenomenology
2009-09-15 v1 Astrophysics
Abstract
One of the most efficient mechanisms for producing the baryon asymmetry of the Universe is the decay of scalar condensates in a SUSY GUT as was first suggested by Affleck and Dine. We show that given a large enough asymmetry, the baryon number will be preserved down to low temperatures even if B - L = 0, because the baryon number carrying scalars form bose condensates that give the W a mass. We derive the conditions on the condensate needed to suppress electroweak sphaleron interactions which would otherwise drive the baryon asymmetry to zero when B - L = 0.
Cite
@article{arxiv.hep-ph/9403259,
title = {On Preserving a B+L Asymmetry Produced in the Early Universe},
author = {Sacha Davidson and Hitoshi Murayama and Keith A. Olive},
journal= {arXiv preprint arXiv:hep-ph/9403259},
year = {2009}
}
Comments
10 pages, LaTeX, UMN-TH-1240, CfPA-TH-94-13, LBL-35275