{
  "id": "1509.02708",
  "version": "v1",
  "published": "2015-09-09T10:28:11.000Z",
  "updated": "2015-09-09T10:28:11.000Z",
  "title": "Search for $B$ decays to final states with the $η_c$ meson",
  "authors": [
    "Anna Vinokurova",
    "for the Belle collaboration"
  ],
  "comment": "To be published in the proceedings of CHARM-2015, Detroit, MI, 18-22 May 2015",
  "categories": [
    "hep-ex"
  ],
  "abstract": "We report a search for $B$ decays to selected final states with the $\\eta_c$ meson: $B^{\\pm}\\to K^{\\pm}\\eta_c\\pi^+\\pi^-$, $B^{\\pm}\\to K^{\\pm}\\eta_c\\omega$, $B^{\\pm}\\to K^{\\pm}\\eta_c\\eta$ and $B^{\\pm}\\to K^{\\pm}\\eta_c\\pi^0$. The analysis is based on $772\\times 10^6$ $B\\bar{B}$ pairs collected at the $\\Upsilon(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider. We set 90% confidence level upper limits on the branching fractions of the studied $B$ decay modes, independent of intermediate resonances, in the range $(0.6-5.3)\\times 10^{-4}$. We also search for molecular-state candidates in the $D^0\\bar{D}^{*0}-\\bar{D}^0D^{*0}$, $D^0\\bar{D}^0+\\bar{D}^0D^0$ and $D^{*0}\\bar{D}^{*0}+\\bar{D}^{*0}D^{*0}$ combinations, neutral partners of the $Z(3900)^{\\pm}$ and $Z(4020)^{\\pm}$, and a poorly understood state $X(3915)$ as possible intermediate states in the decay chain, and set 90% confidence level upper limits on the product of branching fractions to the mentioned intermediate states and decay branching fractions of these states in the range $(0.6-6.9)\\times 10^{-5}$.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2015-09-09T10:28:11.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "confidence level upper limits",
      "decay chain",
      "selected final states",
      "decay branching fractions",
      "mentioned intermediate states"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2015arXiv150902708V",
      "inspire": 1392643
    }
  }
}