{
  "id": "hep-ex/0610003",
  "version": "v5",
  "published": "2006-10-03T18:28:18.000Z",
  "updated": "2008-07-08T19:00:50.000Z",
  "title": "Measurements of exclusive B_s^0 decays at the Y(5S) resonance",
  "authors": [
    "A. Drutskoy",
    "for the Belle Collaboration"
  ],
  "comment": "9 pages, 5 figures, published in Phys. Rev. D76, 012002 (2007)",
  "journal": "Phys.Rev.D76:012002,2007",
  "doi": "10.1103/PhysRevD.76.012002",
  "categories": [
    "hep-ex"
  ],
  "abstract": "Several exclusive $B_s^0$ decays are studied using a 1.86 fb-1 data sample collected at the Y(5S) resonance with the Belle detector at the KEKB asymmetric energy e^+ e^- collider. In the $B_s^0 \\to D_s^- \\pi^+$ decay mode we find 10 $B_s^0$ candidates and measure the corresponding branching fraction. Combining the B_s^0 -> D_s^{(*)-} \\pi^+, B_s^0 -> D_s^{(*)-} \\rho^+, B_s^0 -> J/\\psi \\phi and B_s^0 -> J/\\psi \\eta decay modes, a significant $B_s^0$ signal is observed. The ratio \\sigma (e^+ e^- -> B_s^* \\bar{B}_s^*) / \\sigma (e^+ e^- -> B_s^{(*)} \\bar{B}_s^{(*)}) = (93^{+7}_{-9} \\pm 1)% is obtained at the Y(5S) energy, indicating that $B_s^0$ meson production proceeds predominantly through the creation of $B^*_s \\bar{B}^*_s$ pairs. The $B_s^0$ and $B_s^*$ meson masses are measured to be M(B_s^0)=(5370 \\pm 1 \\pm 3)MeV/c^2 and M(B_s^*)=(5418 \\pm 1 \\pm 3)MeV/c^2. Upper limits on the B_s^0 -> \\gamma \\gamma, B_s^0 -> \\phi \\gamma, B_s^0 -> K^+ K^- and B_s^0 -> D_s^{(*)+} D_s^{(*)-} branching fractions are also reported.",
  "revisions": [
    {
      "version": "v5",
      "updated": "2008-07-08T19:00:50.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "13.20.He",
      "14.40.Gx",
      "14.40.Nd",
      "13.20.Gd",
      "13.25.Gv",
      "13.25.Hw"
    ],
    "keywords": [
      "measurements",
      "decay mode",
      "kekb asymmetric energy",
      "belle detector",
      "upper limits"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. D"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 9,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 727709
    }
  }
}