{
  "id": "hep-ph/0110263",
  "version": "v2",
  "published": "2001-10-19T19:02:22.000Z",
  "updated": "2002-01-16T15:41:37.000Z",
  "title": "Charmful Baryonic B Decays $\\bar B^0\\toΛ_c\\bar p$ and $\\bar B\\toΛ_c\\bar pπ(ρ)$",
  "authors": [
    "Hai-Yang Cheng",
    "Kwei-Chou Yang"
  ],
  "comment": "17 pages, 2 figures. Form factors for Lambda_c-p transitions are corrected. Strong couplings are slightly modified. To appear in Phys. Rev. D",
  "journal": "Phys.Rev. D65 (2002) 054028; Erratum-ibid. D65 (2002) 099901",
  "doi": "10.1103/PhysRevD.65.099901",
  "categories": [
    "hep-ph",
    "hep-ex"
  ],
  "abstract": "We study the two-body and three-body charmful baryonic B decays: $\\bar B^0\\to \\Lambda_c\\bar p$ and $\\bar B\\to \\Lambda_c \\bar p\\pi(\\rho)$. The factorizable W-exchange contribution to $\\bar B^0\\to\\Lambda_c\\bar p$ is negligible. Applying the bag model to evaluate the baryon-to-baryon weak transition matrix element, we find $B(\\bar B^0\\to\\Lambda_c\\bar p)\\leq 1.1\\times 10^{-5}|g_{B^0p\\Sigma_b^+}/6|^2$ with $g_{B^0p\\Sigma_b^+}$ being a strong coupling for the decay $\\Sigma_b^+\\to \\bar B^0 p$ and hence the predicted branching ratio is well below the current experimental limit. The factorizable contributions to $B^-\\to\\Lambda_c\\bar p\\pi^-$ can account for the observed branching ratio of order $6\\times 10^{-4}$. The branching ratio of order $2\\times 10^{-3}$ for $B^-\\to\\Lambda_c\\bar p\\rho^-$ is larger than that of $B^-\\to\\Lambda_c\\bar p\\pi^-$ by a factor of about 2.6. We explain why the three-body charmful baryonic B decay has a larger rate than the two-body one, contrary to the case of mesonic B decays.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2002-01-16T15:41:37.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "14.20.Lq",
      "13.25.Hw",
      "14.20.Pt"
    ],
    "keywords": [
      "branching ratio",
      "three-body charmful baryonic",
      "baryon-to-baryon weak transition matrix element",
      "current experimental limit",
      "factorizable w-exchange contribution"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. D"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 17,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 564639
    }
  }
}