{
  "id": "hep-ex/0005043",
  "version": "v1",
  "published": "2000-05-29T07:05:07.000Z",
  "updated": "2000-05-29T07:05:07.000Z",
  "title": "Measurement of W-pair production in e+e- collisions at 189GeV",
  "authors": [
    "ALEPH Collaboration"
  ],
  "comment": "14 pages, 5 figures",
  "journal": "Phys.Lett.B484:205-217,2000",
  "doi": "10.1016/S0370-2693(00)00624-9",
  "categories": [
    "hep-ex"
  ],
  "abstract": "The production of W-pairs is analysed in a data sample collected by ALEPH at a mean centre-of-mass energy of 188.6 GeV, corresponding to an integrated luminosity of 174.2 pb^-1. Cross sections are given for different topologies of W decays into leptons or hadrons. Combining all final states and assuming Standard Model branching fractions, the total W-pair cross section is measured to be 15.71 +- 0.34 (stat) +- 0.18 (syst) pb. Using also the W-pair data samples collected by ALEPH at lower centre-of-mass energies, the decay branching fraction of the W boson into hadrons is measured to be BR (W > hadrons) = 66.97 +- 0.65 (stat) +- 0.32 (syst) %, allowing a determination of the CKM matrix element |V(cs)|= 0.951 +- 0.030 (stat) +- 0.015 (syst).",
  "revisions": [
    {
      "version": "v1",
      "updated": "2000-05-29T07:05:07.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "w-pair production",
      "measurement",
      "collisions",
      "data sample",
      "total w-pair cross section"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 14,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 527492
    }
  }
}