{
  "id": "hep-ph/9707512",
  "version": "v2",
  "published": "1997-07-29T22:36:22.000Z",
  "updated": "1997-08-08T00:23:19.000Z",
  "title": "Lower Bound on the Pseudoscalar Mass in the Minimal Supersymmetric Standard Model",
  "authors": [
    "E. Keith",
    "Ernest Ma",
    "D. P. Roy"
  ],
  "comment": "11 pages including 2 figs, reference added",
  "journal": "Phys.Rev.D56:5306-5309,1997",
  "doi": "10.1103/PhysRevD.56.R5306",
  "categories": [
    "hep-ph"
  ],
  "abstract": "In the Higgs sector of the Minimal Supersymmetric Standard Model, the mass of the pseudoscalar $A$ is an independent parameter together with $\\tan \\beta \\equiv v_2/v_1$. If $m_A$ is small, then the process $e^+ e^- \\to h + A$ is kinematically allowed and is suppressed only if $\\tan \\beta$ is small. On the other hand, the mass of the charged Higgs boson is now near $M_W$, and the decay $t \\to b + h^+$ is enhanced if $\\tan \\beta$ is small. Since the former has not been observed, and the branching fraction of $t \\to b + W$ cannot be too small (by comparing the experimentally derived $t \\bar t$ cross section from the leptonic channels with the theoretical prediction), we can infer a phenomenological lower bound on $m_A$ of at least 60 GeV for all values of $\\tan \\beta$.",
  "revisions": [
    {
      "version": "v2",
      "updated": "1997-08-08T00:23:19.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "12.60.Jv",
      "14.80.Cp"
    ],
    "keywords": [
      "minimal supersymmetric standard model",
      "pseudoscalar mass",
      "higgs sector",
      "independent parameter",
      "charged higgs boson"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 11,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 446518
    }
  }
}