SUSY and the electroweak phase transition

1996/12/12 by Glennys R. Farrar, M. Losada, Marta Losada · 6 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Particle physics theoretical and experimental studies #hep-ph

paper · pdf · doi:10.1016/s0370-2693(97)00663-1

published as Phys.Lett. B406 (1997) 60-65 · 17 pages, 6 figures, uses epsf

arxiv created 1996/12/12 · openalex publication_date 1997/07/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We analyze the effective 3 dimensional theory previously constructed for the MSSM and multi-Higgs models to determine the regions of parameter space in which the electroweak phase transition is sufficiently strong for a B+L asymmetry to survive in the low temperature phase. We find that the inclusion of all supersymmetric scalars and all 1-loop corrections has the effect of enhancing the strength of the phase transition. Without a light stop or extension of the MSSM the phase transition is sufficiently first order only if the lightest Higgs mass M_h\lsi 70 GeV and tanβ\lsi 1.75.

Citations

• Opening the window for electroweak baryogenesis
• On anomalous electroweak baryon-number non-conservation in the early universe

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