{
  "id": "hep-ex/9811028",
  "version": "v1",
  "published": "1998-11-17T08:02:41.000Z",
  "updated": "1998-11-17T08:02:41.000Z",
  "title": "W+W- production and triple gauge boson couplings at LEP energies up to 183 GeV",
  "authors": [
    "The OPAL Collaboration",
    "G. Abbiendi et al"
  ],
  "comment": "48 pages, LaTeX, including 13 eps or ps figures, submitted to European Physical Journal C",
  "journal": "Eur.Phys.J.C8:191-215,1999",
  "doi": "10.1007/s100529901106",
  "categories": [
    "hep-ex"
  ],
  "abstract": "A study of W-pair production in e+e- annihilations at Lep2 is presented, based on 877 W+W- candidates corresponding to an integrated luminosity of 57 pb-1 at sqrt(s) = 183 GeV. Assuming that the angular distributions of the W-pair production and decay, as well as their branching fractions, are described by the Standard Model, the W-pair production cross-section is measured to be 15.43 +- 0.61 (stat.) +- 0.26 (syst.) pb. Assuming lepton universality and combining with our results from lower centre-of-mass energies, the W branching fraction to hadrons is determined to be 67.9 +- 1.2 (stat.) +- 0.5 (syst.)%. The number of W-pair candidates and the angular distributions for each final state (qqlnu,qqqq,lnulnu) are used to determine the triple gauge boson couplings. After combining these values with our results from lower centre-of-mass energies we obtain D(kappa_g)=0.11+0.52-0.37, D(g^z_1)=0.01+0.13-0.12 and lambda=-0.10+0.13-0.12, where the errors include both statistical and systematic uncertainties and each coupling is determined setting the other two couplings to the Standard Model value. The fraction of W bosons produced with a longitudinal polarisation is measured to be 0.242+-0.091(stat.)+-0.023(syst.). All these measurements are consistent with the Standard Model expectations.",
  "revisions": [
    {
      "version": "v1",
      "updated": "1998-11-17T08:02:41.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "triple gauge boson couplings",
      "lep energies",
      "lower centre-of-mass energies",
      "standard model",
      "angular distributions"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "LaTeX",
      "pages": 48,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 479051
    }
  }
}