{
  "id": "hep-ex/0309069",
  "version": "v3",
  "published": "2003-09-24T01:34:02.000Z",
  "updated": "2003-10-21T14:29:35.000Z",
  "title": "Search for B^0 -> l^+ l^- at Belle",
  "authors": [
    "M. -C. Chang"
  ],
  "comment": "8 pages, 1 figure, submitted to Phys. Rev. D (RC)",
  "journal": "Phys.Rev.D68:111101,2003",
  "doi": "10.1103/PhysRevD.68.111101",
  "categories": [
    "hep-ex"
  ],
  "abstract": "We report the results of a search for the decay B^0 -> e^+ e^-, mu^+ mu^- and e^{+-} mu^{-+} based on an analysis of 78 fb^{-1} of data collected by the Belle detector at KEKB. No candidate events have been found. Upper limits on the branching fractions are calculated at the 90% confidence level: B(B^0 -> e^+ e^-) < 1.9 x 10^{-7}, B(B^0 -> mu^+ mu^-) < 1.6 x 10^{-7}, and B(B^0 -> e^{+-} mu^{-+})< 1.7 x 10^{-7}. A limit on the Pati-Salam leptoquark mass M_{LQ}> 46 TeV/c^2 is obtained at the 90% confidence level.",
  "revisions": [
    {
      "version": "v3",
      "updated": "2003-10-21T14:29:35.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "13.20.He",
      "14.40.Nd"
    ],
    "keywords": [
      "confidence level",
      "upper limits",
      "candidate events",
      "belle detector",
      "branching fractions"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. D"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 8,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 628942
    }
  }
}