{
  "id": "1003.5885",
  "version": "v3",
  "published": "2010-03-30T18:18:11.000Z",
  "updated": "2010-06-01T19:15:37.000Z",
  "title": "Measurement of Y(5S) decays to B^0 and B^+ mesons",
  "authors": [
    "A. Drutskoy",
    "for the Belle Collaboration"
  ],
  "comment": "7 pages, 3 figures, submitted to PRD",
  "journal": "Phys.Rev.D81:112003,2010",
  "doi": "10.1103/PhysRevD.81.112003",
  "categories": [
    "hep-ex"
  ],
  "abstract": "Decays of the Y(5S) resonance to channels with B^+ and B^0 mesons are studied using a 23.6 fb^{-1} data sample collected with the Belle detector at the KEKB asymmetric-energy e^+ e^- collider. Fully reconstructed B^+ -> J/\\psi K^+, B^0 -> J/\\psi K^{*0}, B^+ -> \\bar{D}^0 \\pi^+ and B^0 -> D^- \\pi^+ decays are used to obtain the charged and neutral B production rates per b\\bar{b} event, f(B^+) = (72.1 ^{+3.9}_{-3.8} \\pm 5.0)% and f(B^0) = (77.0 ^{+5.8}_{-5.6} \\pm 6.1)%. Assuming equal rates to B^+ and B^0 mesons in all channels produced at the Y(5S) energy, we measure the fractions for transitions to two-body and three-body channels with B meson pairs, f(B\\bar{B}) = (5.5 ^{+1.0}_{-0.9} \\pm 0.4)%, f(B\\bar{B}^* + B^*\\bar{B}) = (13.7 \\pm 1.3 \\pm 1.1)%, f(B^*\\bar{B}^*) = (37.5 ^{+2.1}_{-1.9} \\pm 3.0)%, f(B\\bar{B}\\pi) = (0.0 \\pm 1.2 \\pm 0.3)%, f(B\\bar{B}^*\\pi + B^*\\bar{B}\\pi) = (7.3 ^{+2.3}_{-2.1} \\pm 0.8)%, and f(B^*\\bar{B}^*\\pi) = (1.0 ^{+1.4}_{-1.3} \\pm 0.4)%. The latter three fractions are obtained assuming isospin conservation.",
  "revisions": [
    {
      "version": "v3",
      "updated": "2010-06-01T19:15:37.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "14.40.Nd",
      "14.40.Pq",
      "13.25.Gv",
      "13.25.Hw"
    ],
    "keywords": [
      "measurement",
      "production rates",
      "assuming equal rates",
      "kekb asymmetric-energy",
      "three-body channels"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review D",
      "year": 2010,
      "month": "Jun",
      "volume": 81,
      "number": 11,
      "pages": 112003
    },
    "note": {
      "typesetting": "TeX",
      "pages": 7,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 850435,
      "adsabs": "2010PhRvD..81k2003D"
    }
  }
}