The Baryon asymmetry in the Standard Model with a low cut-off
High Energy Physics - Phenomenology
2008-11-26 v1
Abstract
We study the generation of the baryon asymmetry in a variant of the standard model, where the Higgs field is stabilized by a dimension-six interaction. Analyzing the one-loop potential, we find a strong first order electroweak phase transition for Higgs masses up to at least 170 GeV. Dimension-six operators induce also new sources of CP violation. We compute the baryon asymmetry in the WKB approximation. Novel source terms in the transport equations enhance the generated baryon asymmetry. For a wide range of parameters the model predicts a baryon asymmetry close to the observed value.
Keywords
Cite
@article{arxiv.hep-ph/0412366,
title = {The Baryon asymmetry in the Standard Model with a low cut-off},
author = {Dietrich Bodeker and Lars Fromme and Stephan J. Huber and Michael Seniuch},
journal= {arXiv preprint arXiv:hep-ph/0412366},
year = {2008}
}
Comments
22 pages, latex, 6 figures