{
  "id": "0911.2787",
  "version": "v3",
  "published": "2009-11-14T16:39:12.000Z",
  "updated": "2010-01-19T15:44:11.000Z",
  "title": "A case for hidden $b\\bar{b}$ tetraquarks based on $e^+e^- \\to b\\bar{b}$ cross section between $\\sqrt{s}=10.54$ and 11.20 GeV",
  "authors": [
    "Ahmed Ali",
    "Christian Hambrock",
    "Ishtiaq Ahmed",
    "M. Jamil Aslam"
  ],
  "comment": "17 pages, 2 figures; typos removed and text slightly modified; version identical to the one published in Physics Letters B",
  "journal": "Phys.Lett.B684:28-39,2010",
  "doi": "10.1016/j.physletb.2009.12.053",
  "categories": [
    "hep-ph",
    "hep-ex",
    "hep-lat"
  ],
  "abstract": "We study the spectroscopy and dominant decays of the bottomonium-like tetraquarks (bound diquarks-antidiquarks), focusing on the lowest lying P-wave $[bq][\\bar{b}\\bar{q}]$ states $Y_{[bq]}$ (with $q=u,d$), having $J^{PC}=1^{--}$. To search for them, we analyse the BABAR data \\cite{:2008hx} obtained during an energy scan of the $e ^+ e^- \\to b \\bar{b}$ cross section in the range of $\\sqrt{s}=10.54$ to 11.20 GeV. We find that these data are consistent with the presence of an additional $b \\bar{b}$ state $Y_{[bq]}$ with a mass of 10.90 GeV and a width of about 30 MeV apart from the $\\Upsilon (5S)$ and $\\Upsilon(6S)$ resonances. A closeup of the energy region around the $Y_{[bq]}$-mass may resolve this state in terms of the two mass eigenstates, $Y_{[b,l]}$ and $Y_{[b,h]}$, with a mass difference, estimated as about 6 MeV. We tentatively identify the state $Y_{[bq]}(10900)$ from the $R_b$-scan with the state $Y_b(10890)$ observed by BELLE \\cite{Abe:2007tk} in the process $e^+e^- \\to Y_b(10890) \\to \\Upsilon (1S, 2S) \\pi^+ \\pi^-$ due to their proximity in masses and decay widths.",
  "revisions": [
    {
      "version": "v3",
      "updated": "2010-01-19T15:44:11.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "12.39.Jh",
      "14.40.Pq",
      "13.66.Bc",
      "13.25.Hw",
      "13.20.Gd"
    ],
    "keywords": [
      "cross section",
      "tetraquarks",
      "mass eigenstates",
      "dominant decays",
      "energy region"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "journal": "Physics Letters B",
      "year": 2010,
      "month": "Feb",
      "volume": 684,
      "number": 1,
      "pages": 28
    },
    "note": {
      "typesetting": "TeX",
      "pages": 17,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 836959,
      "adsabs": "2010PhLB..684...28A"
    }
  }
}