{
  "id": "hep-ex/0005023",
  "version": "v1",
  "published": "2000-05-15T07:48:41.000Z",
  "updated": "2000-05-15T07:48:41.000Z",
  "title": "Measurements of the bb~ production cross section and forward backward asymmetry at centre-of-mass energies above the Z pole at LEP",
  "authors": [
    "L3 Collaboration"
  ],
  "journal": "Phys.Lett.B485:71-84,2000",
  "doi": "10.1016/S0370-2693(00)00676-6",
  "categories": [
    "hep-ex"
  ],
  "abstract": "The measurements of Rb = sigma(e+e- -> bb~)/sigma(e+e- -> qq~) and of the b quark forward-backward charge asymmetry, A^b_fb, at centre-of-mass energies above the Z pole are described. The measurement of Rb is performed at \\root{s} between 130 and 189 GeV using a b-tagging method that exploits the relatively large decay length of b-hadrons. The measurement of A^b_fb is performed using the large statistics event sample collected at \\root{s}=189 GeV with a lepton-tag analysis based on the selection of prompt muons and electrons. The results at \\root{s}=189 GeV are: Rb = 0.163 +/- 0.013 (stat.) +/- 0.005 (syst.), A^b_fb = 0.61 +/- 0.18 (stat.) +/- 0.09 (syst.).",
  "revisions": [
    {
      "version": "v1",
      "updated": "2000-05-15T07:48:41.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "production cross section",
      "forward backward asymmetry",
      "centre-of-mass energies",
      "measurement",
      "large statistics event sample"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 527337
    }
  }
}