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A quantitative analysis of charmonium suppression in nuclear collisions

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Zeitschrift für Physik C Particles and Fields

Abstract

Data from J/ψ and ψ′ production in p - A collisions are used to determine the cross section for absorption of pre-resonance charmonium in nuclear matter. The J/ψ suppression in O - Cu, O - U and S - U collisions is fully reproduced by the corresponding nuclear absorption, while Pb - Pb collisions show an additional suppression increasing with centrality. We study the onset of this change in terms of hadronic comover interactions and conclude that so far no conventional hadronic description can consistently account for all data. Deconfinement, starting at a critical point determined by central S - U collisions, is in accord with the observed suppression pattern.

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Authors and Affiliations

  1. Fakultät für Physik, Universität Bielefeld, D-33501, Bielefeld, Germany

    D. Kharzeev, M. Nardi & H. Satz

  2. PPE Division, CERN, CH-1211, Geneva 23, Switzerland

    C. Lourenço

  3. INFN Torino, Università di Torino, I-10125, Torino, Italy

    M. Nardi

  4. Theory Division, CERN, CH-1211, Geneva 23, Switzerland

    H. Satz

Authors
  1. D. Kharzeev
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  2. C. Lourenço
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  3. M. Nardi
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  4. H. Satz
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Kharzeev, D., Lourenço, C., Nardi, M. et al. A quantitative analysis of charmonium suppression in nuclear collisions. Z Phys C - Particles and Fields 74, 307–318 (1997). https://doi.org/10.1007/s002880050392

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  • DOI: https://doi.org/10.1007/s002880050392

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