Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1997-10-14
ActaPhys.Polon.B28:2841-2872,1997
Physics
High Energy Physics
High Energy Physics - Phenomenology
26 pages, LaTeX, 9 postscript figures, Submitted to Acta Physica Polonica B
Scientific paper
We describe the remarkable accomplishments of the current heavy ion Pb--Pb collision experiments involving strange particle production, carried out at 158A GeV at CERN--SPS. These experimental results, together with the earlier 200A GeV S-induced reactions, imply that, at central rapidity, a novel mechanism of strangeness production arises, accompanied by excess entropy formation. We argue that: These results are consistent with the formation of a space-time localized, highly excited, dense state of matter; The freeze-out properties of strange hadrons are suggestive of the formation of a color-deconfined, thermally and nearly chemically equilibrated phase, which provides at present the only comprehensive framework to describe all experimental data; The matter fireball is undergoing a transverse expansion with nearly the velocity of sound of relativistic matter; longitudinal expansion is not in the scaling regime. We present a first analysis of the recent Pb-Pb results and discuss several alternative reaction scenarios. We evaluate quantitatively strangeness production in the deconfined quark-gluon phase and obtain yields in agreement with the experimental observations made in 200A GeV S--W and 158A GeV Pb-Pb interactions. We also present a qualitative discussion of J/Psi results consistent with our understanding of strange particle results.
Letessier Jean
Rafelski Jan
Tounsi Ahmed
No associations
LandOfFree
Hadronic Signatures of Deconfinement in relativistic nuclear collisions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Hadronic Signatures of Deconfinement in relativistic nuclear collisions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hadronic Signatures of Deconfinement in relativistic nuclear collisions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-258076