{
  "id": "0806.0671",
  "version": "v1",
  "published": "2008-06-04T01:36:44.000Z",
  "updated": "2008-06-04T01:36:44.000Z",
  "title": "Observation of J/psi --> 3 gamma",
  "authors": [
    "CLEO Collaboration",
    "G. S. Adams"
  ],
  "comment": "11 pages, available through http://www.lns.cornell.edu/public/CLNS/, submitted to PRL",
  "journal": "Phys.Rev.Lett.101:101801,2008",
  "doi": "10.1103/PhysRevLett.101.101801",
  "categories": [
    "hep-ex"
  ],
  "abstract": "We report the first observation of the decay J/psi --> 3 gamma. The signal has a statistical significance of 6 sigma and corresponds to a branching fraction of B(J/psi --> 3 gamma) = (1.2 +- 0.3 +- 0.2) x 10^-5, in which the errors are statistical and systematic, respectively. The measurement uses psi(2S) --> pi+ pi- J/psi events acquired with the CLEO-c detector operating at the CESR e+e- collider.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2008-06-04T01:36:44.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "12.38.Qk",
      "13.20.Gd"
    ],
    "keywords": [
      "first observation",
      "decay j/psi",
      "cleo-c detector",
      "statistical significance",
      "corresponds"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review Letters",
      "year": 2008,
      "month": "Sep",
      "volume": 101,
      "number": 10,
      "pages": 101801
    },
    "note": {
      "typesetting": "TeX",
      "pages": 11,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 787282,
      "adsabs": "2008PhRvL.101j1801A"
    }
  }
}