Supersymmetric Electroweak Baryogenesis in the WKB approximation
High Energy Physics - Phenomenology
2009-10-30 v2 Astrophysics
Abstract
We calculate the baryon asymmetry generated at the electroweak phase transition in the minimal supersymmetric standard model, treating the particles in a WKB approximation in the bubble wall background. A set of diffusion equations for the particle species relevant to baryon generation, including source terms arising from the CP violation associated with the complex phase of the parameter, are derived from Boltzmann equations, and solved. The conclusion is that must be to generate a baryon asymmetry consistent with nucleosynthesis. We compare our results to several other recent computations of the effect, arguing that some are overestimates.
Cite
@article{arxiv.hep-ph/9708393,
title = {Supersymmetric Electroweak Baryogenesis in the WKB approximation},
author = {J. Cline and M. Joyce and K. Kainulainen},
journal= {arXiv preprint arXiv:hep-ph/9708393},
year = {2009}
}
Comments
12 pages, 1 figure, corrected some criticisms of hep-ph/9702409; to appear in Phys. Lett. B