Eur. Phys. J. C 10, 473-481
DOI 10.1007/s100529900135
SUSY variants of the electroweak phase transition
S.J. Huber, M.G. Schmidt
Institut für Theoretische Physik, Universität Heidelberg, Philosophenweg 16, D-69120 Heidelberg, Germany
Received: 26 September 1998 / Revised version: 2 June 1999 / Published online: 15 July 1999
Abstract
The MSSM with a light right-handed stop and supersymmetric
models with a singlet whose vev is comparable to that
of the SU(2)W Higgs allow for a strongly first-order
electroweak phase transition even for a mass of the lightest Higgs
around 100 GeV. After a short review of the standard model situation
we discuss these supersymmetric models. We also compare perturbative
calculations based on the dimensionally reduced 3-dimensional
action with lattice results and present an analytic
procedure based on an analogue of the stochastic vacuum model
of QCD to estimate the nonperturbative contributions.
Copyright Springer-Verlag
