{
  "id": "hep-ph/0107043",
  "version": "v2",
  "published": "2001-07-05T11:47:55.000Z",
  "updated": "2001-10-07T12:53:00.000Z",
  "title": "Study of B0-->J/Psi D(*) and etac D(*) in Perturbative QCD",
  "authors": [
    "Gad Eilam",
    "Massimo Ladisa",
    "Ya-Dong Yang"
  ],
  "comment": "9 pages, 3 figures, to appear in PRD",
  "journal": "Phys.Rev. D65 (2002) 037504",
  "doi": "10.1103/PhysRevD.65.037504",
  "categories": [
    "hep-ph"
  ],
  "abstract": "Motivated by recent interest in soft $J/\\Psi$ production in B decays, we investigate ${B}^0 \\to J/\\Psi D^{(\\star)}$ and $\\eta_c D^{(\\star)}$ decays in perturbative QCD. We find that, within that framework, these decays are calculable since the heavy $c\\bar{c}$ pair in the final states is created by a hard gluon. The branching ratios are estimated to be around $10^{-7}\\sim 10^{-8}$, too small to be consistent with the data, suggesting that other mechanism(s) contribute to the observed excess of soft $J/\\Psi$ in ${B}^0 \\to J/\\Psi + X$ decays. The possibility of the production of a hybrid $s{\\bar d}g$ meson with mass about 2 GeV is briefly entertained.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2001-10-07T12:53:00.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "12.39.Jh",
      "12.38.Bx",
      "13.25.Hw"
    ],
    "keywords": [
      "perturbative qcd",
      "production",
      "final states",
      "hard gluon",
      "branching ratios"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. D"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 9,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 559581
    }
  }
}