Probing Dense Matter with Strange Hadrons
نویسنده
چکیده
The signature of quark-gluon plasma is hard to identify, since the final state observed in the laboratory always consists of the same particles, irrespective of the transitional presence of the deconfined state. What changes is the detailed composition of the observed produced particle abundance. We consider here strangeness , and the pattern of strange hadron production at SPS and RHIC which offer, as we shall see, a compelling evidence for quark-gluon plasma formation. An expanding fireball of quark and gluons breaks up into final state hadrons in conditions which differ from the equilibrium transformation explored in lattice QCD . To understand this behavior we need to understand the pressure of quark-gluon plasma:
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