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On energy densities reached in heavy-ion collisions at the CERN SPS

  • J. Pisút
  • N. Pisútová
  • B. Tomásik
Theoretical Physics
  • 29 Downloads

Abstract.

We present a few estimates of energy densities reached in heavy-ion collisions at the CERN SPS. The estimates are based on data and models of proton-nucleus and nucleus-nucleus interactions. In all of these estimates the maximum energy density in central Pb+Pb interactions is larger than the critical energy density \(\varepsilon_c\approx 0.7 \)GeV/fm3 following from lattice gauge theory computations. In estimates which we consider as realistic the maximum energy density is about \(2\varepsilon_c\). In this way our analysis gives some support to claims that deconfined matter has been produced at the CERN SPS. Any definite statement requires a deeper understanding of formation times of partons and hadrons in nuclear collisions. We also compare our results with implicit energy estimates contained in earlier models of anomalous \(J/\psi\) suppression in nuclear collisions.

Keywords

Gauge Theory Early Model Energy Estimate Formation Time Critical Energy 
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Copyright information

© Springer-Verlag Berlin Heidelberg / Società Italiana di Fisica 2003

Authors and Affiliations

  • J. Pisút
    • 1
  • N. Pisútová
    • 2
  • B. Tomásik
    • 1
  1. 1.CERN, Theory Division, 1211 Geneva 23, Switzerland CH
  2. 2. Department of Physics, Comenius University, 84248 Bratislava, Slovakia SK

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