{
  "id": "hep-ph/9702365",
  "version": "v2",
  "published": "1997-02-18T21:54:57.000Z",
  "updated": "1997-02-19T22:09:25.000Z",
  "title": "Dynamics and Phenomenology of Charmonium Production off Nuclei",
  "authors": [
    "B. Z. Kopeliovich"
  ],
  "comment": "Based on the talks presented at the Workshop on Heavy Ion Collisions, Clermont Ferrand, France, January 9-10, 1997 and at the Workshop 'QCD Phase Transitions', Hirschegg, Austria, January 13-18, 1997 Some misprints are fixed at the replacement",
  "categories": [
    "hep-ph",
    "nucl-th"
  ],
  "abstract": "Nuclear suppression of charmonium production in proton-nucleus interactions is poorly understood, what restrains our attempts to single out unusual effects in heavy ion collisions. We develop a phenomenological approach, based on the light-cone dynamics of charmonium production, which has much in common with deep-inelastic scattering and Drell-Yan lepton pair production. The key observation is the existence of a soft mechanism of heavy flavour production, which scales in the quark mass and dominates shadowing corrections and diffraction. It naturally explains the surprisingly strong nuclear suppression of J/Psi at large Feynman-x_F. The low-x_F region is subject to a complicated interplay of hard and soft mechanisms. With evaluated parameters we nicely describe available data on charmonium production in proton-nucleus collisions. Using these results we predict a new process, diffractive production of charmonium on a nucleon target, which fraction in the total production rate of charmonium is evaluated at 12%.",
  "revisions": [
    {
      "version": "v2",
      "updated": "1997-02-19T22:09:25.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "charmonium production",
      "phenomenology",
      "drell-yan lepton pair production",
      "soft mechanism",
      "heavy ion collisions"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 440485,
      "adsabs": "1997hep.ph....2365K"
    }
  }
}