{
  "id": "hep-ex/0111082",
  "version": "v2",
  "published": "2001-11-26T12:32:27.000Z",
  "updated": "2001-12-19T16:47:07.000Z",
  "title": "Measurement of Br(Bbar -> D+l-nubar) and Determination of |Vcb|",
  "authors": [
    "Belle Collaboration",
    "K. Abe"
  ],
  "comment": "21pages, 5 figures, elsart.cls, to be published in PLB. In this version, the form factor comparison between B->Dlnu and D*lnu is included",
  "journal": "Phys.Lett.B526:258-268,2002",
  "doi": "10.1016/S0370-2693(01)01483-6",
  "categories": [
    "hep-ex"
  ],
  "abstract": "We present a measurement of the branching fraction for the semileptonic B decay Bbar -> D+l-nubar, where l- can be either an electron or a muon. We find Gamma(Bbar -> D+l-nubar)= (13.79+/-0.76+/-2.51) ns^{-1}, and the resulting branching fraction Br(Bbar -> D+l-nubar)= (2.13 +/- 0.12 +/- 0.39)%, where the first error is statistical and the second systematic. We also investigate the Bbar -> D+l-nubar form factor and the implications of the result for |Vcb|. From a fit to the differential decay distribution we obtain the rate normalization |Vcb|F_D(1)= (4.11+/-0.44+/-0.52)x10^{-2}. Using a theoretical calculation of F_D(1), the Cabibbo-Kobayashi-Maskawa matrix element |Vcb|=(4.19+/-0.45+/-0.53+/-0.30)x10^{-2} is obtained, where the last error comes from the theoretical uncertainty of F_D(1). The results are based on a data sample of 10.2 fb^{-1} recorded at the Upsilon(4S)$ resonance with the Belle detector at the KEKB e+e- collider.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2001-12-19T16:47:07.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "12.15.Hh",
      "13.30.Ce",
      "13.20.Hw"
    ],
    "keywords": [
      "measurement",
      "determination",
      "differential decay distribution",
      "cabibbo-kobayashi-maskawa matrix element",
      "first error"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 21,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 567187
    }
  }
}