Effect of CP-violation on the sphaleron rate
High Energy Physics - Phenomenology
2009-10-31 v2
Abstract
We calculate the effect of two CP-violating (dimension-eight) operators of the SU(2)-Higgs model on the motion along a particular path from the vacuum to the sphaleron. It turns out that CP-violation may introduce a difference between the sphaleron rate towards larger Chern-Simons number and the rate towards smaller Chern-Simons number. Such a difference induces a non-zero baryon-number without a first order phase transition.
Keywords
Cite
@article{arxiv.hep-ph/0002164,
title = {Effect of CP-violation on the sphaleron rate},
author = {Bert-Jan Nauta},
journal= {arXiv preprint arXiv:hep-ph/0002164},
year = {2009}
}
Comments
7 pages, final formula + some typos corrected