{
  "id": "hep-ex/0503040",
  "version": "v1",
  "published": "2005-03-23T05:18:51.000Z",
  "updated": "2005-03-23T05:18:51.000Z",
  "title": "Measurement of the branching fractions of psi(2S) -> 3(pi+pi-) and J/psi -> 2(pi+pi-)",
  "authors": [
    "M. Ablikim",
    "for the BES Collaboration"
  ],
  "comment": "17pages, 7 figures, submitted to Phys. Rev. D",
  "journal": "Phys.Rev.D72:012002,2005",
  "doi": "10.1103/PhysRevD.72.012002",
  "categories": [
    "hep-ex"
  ],
  "abstract": "Using data samples collected at sqrt(s) = 3.686GeV and 3.650GeV by the BESII detector at the BEPC, the branching fraction of psi(2S) -> 3(pi+pi-) is measured to be [4.83 +- 0.38(stat) +- 0.69(syst)] x 10^-4, and the relative branching fraction of J/psi -> 2(pi+pi-) to that of J/psi -> mu+mu- is measured to be [5.86 +- 0.19(stat) +- 0.39(syst)]% via psi(2S) -> (pi+pi-)J/psi, J/psi -> 2(pi+pi-). The electromagnetic form factor of 3(pi+pi-) is determined to be 0.21 +- 0.02 and 0.20 +- 0.01 at sqrt(s) = 3.686GeV and 3.650GeV, respectively.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2005-03-23T05:18:51.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "13.25.Gv",
      "13.40.Gp",
      "14.40.Gx"
    ],
    "keywords": [
      "measurement",
      "electromagnetic form factor",
      "besii detector",
      "relative branching fraction",
      "data samples"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. D"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 17,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 678943
    }
  }
}