{
  "id": "1001.5360",
  "version": "v2",
  "published": "2010-01-29T09:10:28.000Z",
  "updated": "2010-02-12T10:27:56.000Z",
  "title": "Branching fraction measurements of χ_{c0} and χ_{c2} to π^0π^0 and ηη",
  "authors": [
    "The BESIII Collaboration"
  ],
  "comment": "17 pages, 6 figures, submitted to Phys. Rev. D",
  "journal": "Phys.Rev.D81:052005,2010",
  "doi": "10.1103/PhysRevD.81.052005",
  "categories": [
    "hep-ex"
  ],
  "abstract": "Using a sample of 1.06 \\times 10^8 \\psi^{\\prime} decays collected by the BESIII detector, \\chi_{c0} and \\chi_{c2} decays into \\pi^0\\pi^0 and \\eta\\eta are studied. The branching fraction results are Br(\\chi_{c0}\\to\\pi^0\\pi^0)=(3.23\\pm 0.03\\pm0.23 \\pm 0.14)\\times 10^{-3}, Br(\\chi_{c2}\\to\\pi^0\\pi^0)=(8.8\\pm 0.2\\pm 0.6\\pm0.4)\\times 10^{-4}, Br(\\chi_{c0}\\to\\eta\\eta)=(3.44\\pm 0.10\\pm0.24 \\pm0.2)\\times 10^{-3}, and Br(\\chi_{c2}\\to\\eta\\eta)=(6.5\\pm 0.4\\pm 0.5\\pm 0.3)\\times 10^{-4}, where the uncertainties are statistical, systematic due to this measurement, and systematic due to the branching fractions of \\psi^{\\prime}\\to\\gamma\\chi_{cJ}, respectively. The results provide information on the decay mechanism of \\chi_c states into pseudoscalars.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2010-02-12T10:27:56.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "13.25.Gv",
      "14.40.Pq"
    ],
    "keywords": [
      "branching fraction measurements",
      "besiii detector",
      "decay mechanism",
      "branching fraction results",
      "systematic"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review D",
      "year": 2010,
      "month": "Mar",
      "volume": 81,
      "number": 5,
      "pages": "052005"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 17,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 844232,
      "adsabs": "2010PhRvD..81e2005A"
    }
  }
}