{
  "id": "0909.5223",
  "version": "v1",
  "published": "2009-09-28T21:40:40.000Z",
  "updated": "2009-09-28T21:40:40.000Z",
  "title": "Study of Y(5S) decays to B0 and B+ mesons",
  "authors": [
    "A. Drutskoy"
  ],
  "comment": "4 pages, 2 figures, proceedings of the 2009 Europhysics Conference on HEP, July 16-22, 2009, Krakow, Poland",
  "journal": "PoS EPS-HEP2009 2009:056,2009",
  "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 on the Y(5S) resonance with the Belle detector at the KEKB asymmetric energy e^+ e^- collider. The 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 B^+ and B^0 production rates per bb_bar event, f(B^+) = (67.5 \\pm 3.6 \\pm 4.8)% and f(B^0)=(70.4^{+5.2}_{-5.1} \\pm 6.2)%$. Assuming equal rates to B^+ and B^0 mesons in all channels produced at the Y(5S) energy, we measure the fractions for bb_bar event transitions to the two-body and multi-body channels with B^{+/0} meson pairs, f(B\\bar{B}) = (5.1 \\pm 0.9 \\pm 0.4)%, f(B\\bar{B}^*+B^*\\bar{B}) = (12.6^{+1.2}_{-1.1} \\pm 1.0)%, f(B^*\\bar{B}^*) = (34.5^{+1.9}_{-1.8} \\pm 2.7)%, f(B^{(*)}\\bar{B}^{(*)}\\pi(\\pi)) = (16.4^{+1.6}_{-1.5} \\pm 1.2)%, f(B\\bar{B} \\pi) = (0.0 \\pm 1.1 \\pm 0.2)%, f(B\\bar{B}^*\\pi+B^*\\bar{B}\\pi) = (6.8^{+2.1}_{-2.0} \\pm 0.7)%, and f(B^*\\bar{B}^*\\pi) = (1.0^{+1.3}_{-1.2} \\pm 0.3)%.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2009-09-28T21:40:40.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "kekb asymmetric energy",
      "meson pairs",
      "data sample",
      "production rates",
      "assuming equal rates"
    ],
    "tags": [
      "conference paper",
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 832467,
      "adsabs": "2009ehep.confE..56D"
    }
  }
}