{
  "id": "hep-ex/0502007",
  "version": "v1",
  "published": "2005-02-03T11:34:37.000Z",
  "updated": "2005-02-03T11:34:37.000Z",
  "title": "Multijet production in neutral current deep inelastic scattering at HERA and determination of alpha_s",
  "authors": [
    "ZEUS Collaboration"
  ],
  "comment": "22 pages, 5 figures",
  "journal": "Eur.Phys.J.C44:183-193,2005",
  "doi": "10.1140/epjc/s2005-02347-1",
  "categories": [
    "hep-ex"
  ],
  "abstract": "Multijet production rates in neutral current deep inelastic scattering have been measured in the range of exchanged boson virtualities 10 < Q2 < 5000 GeV2. The data were taken at the ep collider HERA with centre-of-mass energy sqrt(s) = 318 GeV using the ZEUS detector and correspond to an integrated luminosity of 82.2 pb-1. Jets were identified in the Breit frame using the k_T cluster algorithm in the longitudinally invariant inclusive mode. Measurements of differential dijet and trijet cross sections are presented as functions of jet transverse energy E_{T,B}{jet}, pseudorapidity eta_{LAB}{jet} and Q2 with E_{T,B}{jet} > 5 GeV and -1 < eta_{LAB}{jet} < 2.5. Next-to-leading-order QCD calculations describe the data well. The value of the strong coupling constant alpha_s(M_Z), determined from the ratio of the trijet to dijet cross sections, is alpha_s(M_Z) = 0.1179 pm 0.0013(stat.) {+0.0028}_{-0.0046}(exp.) {+0.0064}_{-0.0046}(th.)",
  "revisions": [
    {
      "version": "v1",
      "updated": "2005-02-03T11:34:37.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "neutral current deep inelastic scattering",
      "determination",
      "multijet production rates",
      "next-to-leading-order qcd calculations",
      "dijet cross sections"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 22,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 676091
    }
  }
}