Formation and evolution of the quark-gluon plasma

J. Letessier, Johann Rafelski, A. Tounsi

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Imposing an equilibrium between the thermal pressure of deconfined quarks and gluons and the dynamical compression pressure exercised by in-flowing nuclear matter, we study the initial thermal conditions reached in a quark-gluon plasma fireball formed in a relativistic heavy ion collision. We show that entropy is produced primarily in the pre-equilibrium stage of the reaction. We test our approach, comparing our results with the S→W Pb collision results at 200 GeV A and find a surprising degree of agreement assuming about 50% stopping. We apply our method to a determination of the conditions in collisions of Au→Au at 11 GeV A and Pb→Pb at 157 GeV A, assuming full stopping of momentum, energy and baryon number. Our detailed results directly determine the spectral shape and abundance of (strange) hadrons and electromagnetic probes (photons, dileptons) produced in the collision, and we explore specific experimental consequences.

Original languageEnglish (US)
Pages (from-to)484-493
Number of pages10
JournalPhysics Letters B
Volume333
Issue number3-4
DOIs
StatePublished - Aug 4 1994

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quarks
stopping
collisions
fireballs
gluons
ionic collisions
hadrons
baryons
kinetic energy
entropy
electromagnetism
probes
photons

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Formation and evolution of the quark-gluon plasma. / Letessier, J.; Rafelski, Johann; Tounsi, A.

In: Physics Letters B, Vol. 333, No. 3-4, 04.08.1994, p. 484-493.

Research output: Contribution to journalArticle

Letessier, J. ; Rafelski, Johann ; Tounsi, A. / Formation and evolution of the quark-gluon plasma. In: Physics Letters B. 1994 ; Vol. 333, No. 3-4. pp. 484-493.
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