{
  "id": "0910.3147",
  "version": "v1",
  "published": "2009-10-16T15:52:00.000Z",
  "updated": "2009-10-16T15:52:00.000Z",
  "title": "Decay widths of charmonia in a hot equilibrated medium",
  "authors": [
    "Massimo Mannarelli",
    "Floriana Giannuzzi"
  ],
  "comment": "6 pages, 2 figures, contribution to the conference Three Days of Strong Interactions, Wroclaw (Poland) 9. - 11. VII. 2009",
  "journal": "Acta Phys.Polon.Supp.3:759-764,2010",
  "categories": [
    "hep-ph"
  ],
  "abstract": "We investigate the properties of charmonia in a thermal medium, showing that with increasing temperature the decay widths of these mesons behave in a non-trivial way. Employing a potential model with interaction potential extracted from thermal lattice QCD calculations of the free-energy of a static quark-antiquark pair, we study some decay processes in the crossover region. We find that at temperatures $T \\sim T_c$ the decay widths of the $J/\\Psi$ that depend on the value of the wave function at the origin are enhanced with respect to the values in vacuum. In the same temperature range the decay width of the process $\\chi_{cJ} \\to J/\\Psi + \\gamma$ is enhanced by approximately a factor 6 with respect to the value in vacuum. At higher temperatures the charmonia states dissociate and the widths of both decay processes become vanishing small.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2009-10-16T15:52:00.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "13.20.Gd",
      "12.38.Aw",
      "12.38.-t",
      "12.39.Pn"
    ],
    "keywords": [
      "decay width",
      "hot equilibrated medium",
      "temperature",
      "decay processes",
      "thermal lattice qcd calculations"
    ],
    "tags": [
      "conference paper",
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 6,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 834227,
      "adsabs": "2009arXiv0910.3147M"
    }
  }
}