Role of strangeness in the hadronization of the quark-gluon plasma

Thesis/Dissertation · Thu Jan 01 04:00:00 EST 1987

OSTI ID:5466547

Lee, K S

Strangeness in the evolution of a quark-gluon plasma is considered. A phenomenological equation of state is used to describe the phase transition between a hot and dense hadron gas and a quark-gluon plasma. The consequences for the phase diagram of strangeness conservation during nuclear collisions are analyzed. The flavor composition of the quark plasma and an equilibrated hadron gas is studied and compared along the phase transition surface. The analysis covers the entire temperature-baryon density plane. When the systems of equal entropy contents are compared, the chemical composition of the hadronization debris from a quark-gluon plasma is similar to that of a chemically equilibrated hadron gas, although in both cases the production level of strange and non-strange antibaryons will be much higher than in observed in proton-proton collisions. Using a schematic hydrodynamic description of relativistic heavy-ion collisions in the regime of complete nuclear stopping, the freeze-out and strange particle energy spectra from a hadronized quark-gluon plasma is studied. Characteristic changes in the slopes of the K{sup +} and K{sup {minus}} meson energy spectra are found and suggested as a signature for the quark-gluon plasma phase transition.

• Research Organization: State Univ. of New York, Stony Brook, NY (USA)
• OSTI ID: 5466547
• Country of Publication: United States
• Language: English

Related Subjects

645204 -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions & Properties
653003* -- Nuclear Theory-- Nuclear Reactions & Scattering
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANTIBARYONS
ANTIMATTER
ANTIPARTICLES
BARYONS
BOSONS
CHARGED-PARTICLE REACTIONS
COMPARATIVE EVALUATIONS
DIAGRAMS
ELEMENTARY PARTICLES
ENERGY RANGE
ENERGY SPECTRA
EQUATIONS
EQUATIONS OF STATE
FERMIONS
HADRONS
HEAVY ION REACTIONS
KAONS
KAONS MINUS
KAONS PLUS
MATTER
MESONS
NUCLEAR REACTIONS
PARTICLE PROPERTIES
PHASE DIAGRAMS
PHASE TRANSFORMATIONS
PSEUDOSCALAR MESONS
QUARK MATTER
RELATIVISTIC RANGE
SPECTRA
STRANGE MESONS
STRANGE PARTICLES
STRANGENESS