Perturbative Analysis of the MSSM Electroweak Phase Transition
High Energy Physics - Phenomenology
2007-05-23 v1
Abstract
Light stops can give a strong first order electroweak phase transition in the Minimal Supersymmetric Standard Model (MSSM) satisfying one of the necessary conditions for electroweak baryogenesis. I discuss the region of parameter space where this occurs using a perturbative analysis of the Higgs effective potential. Two-loop QCD corrections associated with stop loops are crucial to open this baryogenesis window, which corresponds to 2.25 < tan beta < 3.6, one stop not much heavier than the top quark, m_A > 120 GeV and a light Higgs boson with m_h < 85 GeV. This region will be explored by LEP II very soon.
Cite
@article{arxiv.hep-ph/9706389,
title = {Perturbative Analysis of the MSSM Electroweak Phase Transition},
author = {J. R. Espinosa},
journal= {arXiv preprint arXiv:hep-ph/9706389},
year = {2007}
}
Comments
6 pages, 1 ps figure, uses psfig. Talk given at "Strong and Electroweak Matter '97", Eger (Hungary) 21-25 May 1997