The electroweak phase transition in a nonminimal supersymmetric model

1992/07/09 by Massimo Pietroni, M. Pietroni · 4 citations
Computer Science · Physics and Astronomy · #Baryon asymmetry #Computational Physics and Python Applications #Electroweak interaction #Higgs boson #High-Energy Particle Collisions Research #Minimal Supersymmetric Standard Model #Parameter space #Particle physics theoretical and experimental studies #Scalar (mathematics) #Standard Model (mathematical formulation) #Supersymmetry #hep-ph

paper · pdf · doi:10.1016/0550-3213(93)90635-3

published as Nucl.Phys. B402 (1993) 27-45 · 23 pages, LaTeX, DFPD/92/TH/36

arxiv created 1992/07/09 · openalex publication_date 1993/08/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We study the electroweak phase transition in a supersymmetric version of the Standard Model, in which a gauge singlet superfield is added to the Higgs sector. We show that the order of the transition is determined by the trilinear soft supersymmetry breaking terms rather than by the O ( m³ T ) term in the 1-loop, T≠0 corrections. This fact removes the Standard Model upper bound on the Higgs mass, m_H < 55 GeV, coming from the requirement that baryon asymmetry is not washed out by anomalous electroweak processes. We perform a numerical analysis of parameter space including in the effective potential top-stop contribution to 1-loop radiative corrections. We find that this model is compatible with the preservation of baryon asymmetry for masses of the lightest scalar up to about 170 GeV.

Citations

• Baryogenesis constraints on the minimal supersymmetric model
• On anomalous electroweak baryon-number non-conservation in the early universe

Cited by

• The Discriminant Power of Bubble Wall Velocities: Gravitational Waves and Electroweak Baryogenesis
• Gravitational Waves, baryon asymmetry of the universe and electric dipole moment in the CP-violating NMSSM
• Top flavour violating decays in general supersymmetric models
• Fusing vectors into scalars at high energy lepton colliders
• Nucleation is more than critical: A case study of the electroweak phase transition in the NMSSM