{
  "id": "hep-ex/0203008",
  "version": "v1",
  "published": "2002-03-05T22:47:47.000Z",
  "updated": "2002-03-05T22:47:47.000Z",
  "title": "Measurement of the Branching Fraction and CP Content for the Decay B0 --> D*+ D*-",
  "authors": [
    "The BaBar Collaboration",
    "B. Aubert"
  ],
  "comment": "7 pages, 2 figures, submitted to PRL",
  "journal": "Phys.Rev.Lett.89:061801,2002",
  "doi": "10.1103/PhysRevLett.89.061801",
  "categories": [
    "hep-ex"
  ],
  "abstract": "We report a measurement of the branching fraction of the decay B^0 --> D^{*+} D^{*-} and of the CP-odd component of its final state using the BaBar detector. With data corresponding to an integrated luminosity of 20.4 fb^{-1} collected at the Upsilon(4S) resonance during 1999-2000, we have reconstructed 38 candidate signal events in the mode B^0 --> D^{*+}D^{*-} with an estimated background of 6.2 \\pm 0.5 events. From these events, we determine the branching fraction to be BR(B^0 --> D^{*+}D^{*-}) = (8.3 +/- 1.6(stat) +/- 1.2(syst)) x 10^{-4}. The measured CP-odd fraction of the final state is 0.22 +/- 0.18(stat) +/- 0.03(syst).",
  "revisions": [
    {
      "version": "v1",
      "updated": "2002-03-05T22:47:47.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "branching fraction",
      "decay b0",
      "cp content",
      "measurement",
      "final state"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. Lett."
    },
    "note": {
      "typesetting": "TeX",
      "pages": 7,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 583754
    }
  }
}