{
  "id": "hep-ph/0205305",
  "version": "v1",
  "published": "2002-05-27T15:04:52.000Z",
  "updated": "2002-05-27T15:04:52.000Z",
  "title": "Charmonium Suppression and Regeneration from SPS to RHIC",
  "authors": [
    "L. Grandchamp",
    "R. Rapp"
  ],
  "comment": "17 pages, 15 figures",
  "journal": "Nucl.Phys.A709:415-439,2002",
  "doi": "10.1016/S0375-9474(02)01027-8",
  "categories": [
    "hep-ph",
    "nucl-th"
  ],
  "abstract": "The production of charmonia is investigated for heavy-ion collisions from SPS to RHIC energies. Our approach incorporates two sources of $J/\\Psi$ yield: (i) a direct contribution arising from early (hard) parton-parton collisions, subject to subsequent nuclear absorption, quark-gluon plasma and hadronic dissociation, and (ii) statistical production at the hadronization transition by coalescence of $c$ and $\\bar{c}$ quarks. Within an expanding thermal fireball framework, the model reproduces $J/\\Psi$ centrality dependencies observed at the SPS in Pb-Pb and S-U collisions reasonably well. The study of the $\\Psi'/\\Psi$ ratio at SPS points at the importance of the hadronic phase for $\\Psi'$ interactions, possibly related to effects of chiral symmetry restoration. Predictions are given for the centrality dependence of the $N_{J/\\Psi}/N_{c\\bar{c}}$ ratio at full RHIC energy. We also calculate the excitation function of this ratio. The latter exhibits a characteristic minimum structure signalling the transition from the standard $J/\\Psi$ suppression scenario prevailing at SPS to dominantly thermal regeneration at collider energies.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2002-05-27T15:04:52.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "charmonium suppression",
      "characteristic minimum structure",
      "full rhic energy",
      "subsequent nuclear absorption",
      "chiral symmetry restoration"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "Elsevier",
      "journal": "Nucl. Phys. A"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 17,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 587318
    }
  }
}