{
  "id": "hep-ph/9207227",
  "version": "v1",
  "published": "1992-07-09T18:09:00.000Z",
  "updated": "1992-07-09T18:09:00.000Z",
  "title": "The Electroweak Phase Transition in a Nonminimal Supersymmetric Model",
  "authors": [
    "M. Pietroni"
  ],
  "comment": "23 pages, LaTeX, DFPD/92/TH/36",
  "journal": "Nucl.Phys. B402 (1993) 27-45",
  "doi": "10.1016/0550-3213(93)90635-3",
  "categories": [
    "hep-ph"
  ],
  "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 $O ( m^{3} T )$ term in the 1-loop, $T\\neq0$ 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.",
  "revisions": [
    {
      "version": "v1",
      "updated": "1992-07-09T18:09:00.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "electroweak phase transition",
      "nonminimal supersymmetric model",
      "trilinear soft supersymmetry breaking terms",
      "standard model upper bound",
      "baryon asymmetry"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "Elsevier",
      "journal": "Nucl. Phys. B"
    },
    "note": {
      "typesetting": "LaTeX",
      "pages": 23,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 32805
    }
  }
}