Perturbative Analysis of the MSSM Electroweak Phase Transition

1997/06/17 by J. R. Espinosa, Espinosa, J. R.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph

paper · pdf · doi:10.48550/arxiv.hep-ph/9706389

6 pages, 1 ps figure, uses psfig. Talk given at "Strong and Electroweak Matter '97", Eger (Hungary) 21-25 May 1997

arxiv created 1997/06/17 · arxiv updated 2009/11/30

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.

Related

• The Electroweak Phase Transition in the MSSM
• Predictions for SUSY Particle Masses from Electroweak Baryogenesis
• Electroweak baryogenesis in the MSSM with vector-like quarks
• Electroweak phase transition and baryogenesis in the MSSM
• The Electroweak Phase Transition - Standard and ``Beyond''