Baryon Asymmetry from a Two Stage Electroweak Phase Transition ?
High Energy Physics - Phenomenology
2009-10-28 v1
Abstract
We investigate an extension of the standard model with a second Higgs doublet, showing a two stage phase transition. Wash-out of a baryon asymmetry after the phase transition can be easily avoided in this class of models. B+L transitions are more strongly suppressed in the intermediate phase than in the high temperature symmetric phase,however. Therefore, it becomes more difficult if not impossible to generate a sufficient baryon asymmetry during the phase transition.
Cite
@article{arxiv.hep-ph/9404272,
title = {Baryon Asymmetry from a Two Stage Electroweak Phase Transition ?},
author = {A. Hammerschmitt and J. Kripfganz and M. G. Schmidt},
journal= {arXiv preprint arXiv:hep-ph/9404272},
year = {2009}
}
Comments
13 p., 5 figs included (to be transf. into Fig_.eps files), HD-THEP-94-08