{
  "id": "nucl-th/0210075",
  "version": "v2",
  "published": "2002-10-24T17:47:10.000Z",
  "updated": "2003-05-13T13:21:15.000Z",
  "title": "$J/ψ$ dissociation by pions in QCD",
  "authors": [
    "Francisco O. Durães",
    "Su Houng Lee",
    "Fernando S. Navarra",
    "Marina Nielsen"
  ],
  "comment": "revised version to be published in Phys. Lett. B",
  "journal": "Phys.Lett. B564 (2003) 97-103",
  "doi": "10.1016/S0370-2693(03)00709-3",
  "categories": [
    "nucl-th",
    "hep-ph"
  ],
  "abstract": "We compute the $J/\\psi \\pi\\to {charmed mesons}$ cross section using QCD sum rules. This cross section is important to distinguish the suppression in the production of $J/\\psi$ through the dissociation by comoving pions and through the formation of quark-gluon plasma. Our sum rules for the $J/\\psi \\pi\\to \\bar{D} D^*$, $D \\bar{D}^*$, ${\\bar D}^* D^*$ and ${\\bar D} D$ hadronic matrix elements are constructed by using vaccum-pion correlation functions, and we work up to twist-4 in the soft-pion limit. After doing a thermal average we get $<\\sigma^{\\pi J/\\psi} v>\\sim 0.2 - 0.4$ mb at $T=150\\MeV$",
  "revisions": [
    {
      "version": "v2",
      "updated": "2003-05-13T13:21:15.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "dissociation",
      "cross section",
      "qcd sum rules",
      "hadronic matrix elements",
      "vaccum-pion correlation functions"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 600576
    }
  }
}