{
  "id": "hep-ph/0206058",
  "version": "v2",
  "published": "2002-06-05T20:45:41.000Z",
  "updated": "2002-06-11T17:02:57.000Z",
  "title": "Remark on the Theoretical Uncertainty in B^0-\\bar{B}^0 Mixing",
  "authors": [
    "Andreas S. Kronfeld",
    "Sinead M. Ryan"
  ],
  "comment": "10 pp., 4 figs; text on some other papers clarified, reference added",
  "journal": "Phys.Lett.B543:59-65,2002",
  "doi": "10.1016/S0370-2693(02)02407-3",
  "categories": [
    "hep-ph",
    "hep-lat"
  ],
  "abstract": "We re-examine the theoretical uncertainty in the Standard Model expression for $B^0$-$\\bar{B}^0$ mixing. We focus on lattice calculations of the ratio $\\xi$, needed to relate the oscillation frequency of $B^0_s$-$\\bar{B}^0_s$ mixing to the poorly known CKM element $V_{td}$. We replace the usual linear chiral extrapolation with one that includes the logarithm that appears in chiral perturbation theory. We find a significant shift in the ratio $\\xi$, from the conventional $1.15\\pm0.05$ to $\\xi=1.32\\pm0.10$.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2002-06-11T17:02:57.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "theoretical uncertainty",
      "usual linear chiral extrapolation",
      "standard model expression",
      "chiral perturbation theory",
      "ckm element"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 10,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 587989
    }
  }
}