{
  "id": "0807.2581",
  "version": "v5",
  "published": "2008-07-16T14:44:32.000Z",
  "updated": "2008-11-04T08:55:34.000Z",
  "title": "Possible tetraquark states in the $π^+ χ_{c1}$ invariant mass distribution",
  "authors": [
    "Zhi-Gang Wang"
  ],
  "comment": "12 pages, 4 figures",
  "journal": "Eur. Phys. J.C59:675-681, 2009",
  "doi": "10.1140/epjc/s10052-008-0812-2",
  "categories": [
    "hep-ph"
  ],
  "abstract": "In this article, we assume that there exist hidden charmed tetraquark states with the spin-parity $J^P=1^-$, and calculate their masses with the QCD sum rules. The numerical result indicates that the masses of the vector hidden charmed tetraquark states are about $M_{Z}=(5.12\\pm0.15) \\rm{GeV}$ or $M_{Z}=(5.16\\pm0.16) \\rm{GeV}$, which are inconsistent with the experimental data on the $\\pi^+ \\chi_{c1}$ invariant mass distribution. The hidden charmed mesons $Z_1$, $Z_2$ or $Z$ may be scalar hidden charmed tetraquark states, hadro-charmonium resonances or molecular states.",
  "revisions": [
    {
      "version": "v5",
      "updated": "2008-11-04T08:55:34.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "12.38.Lg",
      "12.39.Mk"
    ],
    "keywords": [
      "invariant mass distribution",
      "scalar hidden charmed tetraquark states",
      "vector hidden charmed tetraquark states",
      "qcd sum rules",
      "hadro-charmonium resonances"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "journal": "European Physical Journal C",
      "year": 2009,
      "month": "Feb",
      "volume": 59,
      "number": 3,
      "pages": 675
    },
    "note": {
      "typesetting": "TeX",
      "pages": 12,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 790882,
      "adsabs": "2009EPJC...59..675W"
    }
  }
}