{
  "id": "nucl-th/0211092",
  "version": "v1",
  "published": "2002-11-28T18:20:01.000Z",
  "updated": "2002-11-28T18:20:01.000Z",
  "title": "Progress in the determination of the $J/ψ-π$ cross section",
  "authors": [
    "Francisco O. Duraes",
    "Hungchong Kim",
    "Su Houng Lee",
    "Fernando S. Navarra",
    "Marina Nielsen"
  ],
  "comment": "22 pages, RevTeX4 including 7 figures in ps files",
  "journal": "Phys.Rev. C68 (2003) 035208",
  "doi": "10.1103/PhysRevC.68.035208",
  "categories": [
    "nucl-th",
    "hep-ph"
  ],
  "abstract": "Improving previous calculations, we compute the $J/\\psi \\pi\\to {charmed mesons}$ cross section using QCD sum rules. 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. Our results suggest that, using meson exchange models is perfectly acceptable, provided that they include form factors and that they respect chiral symmetry. After doing a thermal average we get $<\\sigma^{\\pi J/\\psi} v>\\sim 0.3$ mb at $T=150\\MeV$.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2002-11-28T18:20:01.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "13.85.Fb",
      "14.40.Lb",
      "12.38.Lg"
    ],
    "keywords": [
      "cross section",
      "determination",
      "respect chiral symmetry",
      "vaccum-pion correlation functions",
      "qcd sum rules"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. C"
    },
    "note": {
      "typesetting": "RevTeX",
      "pages": 22,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 603292
    }
  }
}