{
  "id": "hep-ph/0703244",
  "version": "v1",
  "published": "2007-03-22T18:19:13.000Z",
  "updated": "2007-03-22T18:19:13.000Z",
  "title": "Analyzing B_s - bar B_s mixing: Non-perturbative contributions to bag parameters from sum rules",
  "authors": [
    "T. Mannel",
    "B. D. Pecjak",
    "A. A. Pivovarov"
  ],
  "comment": "31 pages, 5 figures",
  "categories": [
    "hep-ph"
  ],
  "abstract": "We use QCD sum rules to compute matrix elements of the Delta B=2 operators appearing in the heavy-quark expansion of the width difference of the B_s mass eigenstates. Our analysis includes the leading-order operators Q and Q_S, as well as the subleading operators R_2 and R_3, which appear at next-to-leading order in the 1/m_b expansion. We conclude that the violation of the factorization approximation for these matrix elements due to non-perturbative vacuum condensates is as low as 1-2%.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2007-03-22T18:19:13.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "bag parameters",
      "non-perturbative contributions",
      "matrix elements",
      "qcd sum rules",
      "heavy-quark expansion"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 31,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 746994,
      "adsabs": "2007hep.ph....3244M"
    }
  }
}