Quark-Gluon-Plasma Formation at SPS Energies?

Details Quark-Gluon-Plasma Formation at SPS Energies? Quark-Gluon-Plasma Formation at SPS Energies?

1994-03-10

arxiv.org/abs/nucl-th/9403010v1

Phys.Rev.Lett. 73 (1994) 1594-1597

Physics

Nuclear Physics

Nuclear Theory

7 Pages, HD-TVP-94-6 (1 uuencoded figure)

Scientific paper

10.1103/PhysRevLett.73.1594

By colliding ultrarelativistic ions, one achieves presently energy densities close to the critical value, concerning the formation of a quark-gluon-plasma. This indicates the importance of fluctuations and the necessity to go beyond the investigation of average events. Therefore, we introduce a percolation approach to model the final stage ($\tau > 1$ fm/c) of ion-ion collisions, the initial stage being treated by well-established methods, based on strings and Pomerons. The percolation approach amounts to finding high density domains, and treating them as quark-matter droplets. In this way, we have a {\bf realistic, microscopic, and Monte--Carlo based model which allows for the formation of quark matter.} We find that even at SPS energies large quark-matter droplets are formed -- at a low rate though. In other words: large quark-matter droplets are formed due to geometrical fluctuation, but not in the average event.

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