{
  "id": "hep-ex/0607039",
  "version": "v1",
  "published": "2006-07-21T17:04:21.000Z",
  "updated": "2006-07-21T17:04:21.000Z",
  "title": "Measurements of the Decays $B^0 \\to \\bar{D}^0\\proton\\antiproton$, $B^0 \\to \\bar{D}^{*0}\\proton\\antiproton$, $B^0 \\to D^{-}\\proton\\antiprotonπ^+$, and $B^0 \\to D^{*-}\\proton\\antiprotonπ^+$",
  "authors": [
    "The BABAR Collaboration",
    "B. Aubert"
  ],
  "comment": "9 pages, 26 postscript figures, submitted to PRD-RC",
  "journal": "Phys.Rev.D74:051101,2006",
  "doi": "10.1103/PhysRevD.74.051101",
  "categories": [
    "hep-ex"
  ],
  "abstract": "We present measurements of branching fractions of $B^0$ decays to multi-body final states containing protons, based on 232 million $\\Upsilon(4S)\\to B\\bar{B}$ decays collected with the BaBar detector at the SLAC PEP-II asymmetric-energy $B$ factory. We measure the branching fractions ${\\cal B}(B^0 \\to \\bar{D}^0\\proton\\antiproton)=(1.13\\pm0.06\\pm0.08)\\times 10^{-4}$, ${\\cal B}(B^0 \\to \\bar{D}^{*0}\\proton\\antiproton)=(1.01\\pm0.10\\pm0.09)\\times 10^{-4}$, ${\\cal B}(B^0 \\to D^{-}\\proton\\antiproton\\pi^+)=(3.38\\pm0.14\\pm0.29)\\times 10^{-4}$, and ${\\cal B}(B^0 \\to D^{*-}\\proton\\antiproton\\pi^+)=(4.81\\pm0.22\\pm0.44)\\times 10^{-4}$ where the first error is statistical and the second systematic. We present a search for the charmed pentaquark state, $\\Theta_c(3100)$ observed by H1 and put limits on the branching fraction ${\\cal B} (B^0 \\to \\Theta_c \\antiproton\\pi^+)\\times{\\cal B}(\\Theta_c \\to D^{*-}\\proton)<14\\times10^{-6}$ and ${\\cal B}(B^0 \\to \\Theta_c \\antiproton\\pi^+)\\times{\\cal B}(\\Theta_c\\to D^-\\proton)<9\\times10^{-6}$. Upon investigation of the decay structure of the above four $B^{0}$ decay modes, we see an enhancement at low $p\\bar{p}$ mass and deviations from phase-space in the $\\bar{D}\\bar{p}$ and $\\bar{D}p$ invariant mass spectra.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2006-07-21T17:04:21.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "11.30.Er",
      "12.15.Hh",
      "13.25.Hw"
    ],
    "keywords": [
      "measurements",
      "branching fraction",
      "multi-body final states containing protons",
      "invariant mass spectra",
      "slac pep-ii asymmetric-energy"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. D"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 9,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 722124
    }
  }
}