Critical Review Of Quark Gluon Plasma Signals
D. Zschiesche, L. Gerland, S. Schramm, J. Schaffner-Bielich, H. Stoecker, W. Greiner
Abstract
Compelling evidence for a new form of matter has been claimed to be formed in Pb+Pb collisions at SPS. We critically review two suggested signatures for this new state of matter: First the suppression of the J/Ψ, which should be strongly suppressed in the QGP by two different mechanisms, the color-screening and the QCD-photoeffect. Secondly the measured particle, in particular strange hadronic, ratios might signal the freeze-out from a quark-gluon phase.
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