Two-stage equilibration in high energy heavy ion collisions

Journal Article · Mon Jun 01 00:00:00 EDT 1992 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.68.3270· OSTI ID:7035049

Shuryak, E ^[1]

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1. Department of Physics, State University of New York at Stony Brook, Stony Brook, New York 11794 (United States)

Using the (lowest-order) perturbative QCD, we argue that high energy heavy-ion collisions proceed via two stages: {ital equilibration} {ital of} {ital gluons} takes time {tau}{sub {ital g}}{similar to}1/2 fm/{ital c}, while {ital production} {ital and} {ital equilibration} {ital of} {ital quarks} needs time at least {tau}{sub {ital q}}{similar to}2 fm/{ital c}. If so, the initial gluon plasma is much hotter than usually estimated, {ital T}{sub {ital g}}{similar to}400 MeV, which leads to enhanced charm production and significant modifications of other proposed signals.

• DOE Contract Number: FG02-88ER40388
• OSTI ID: 7035049
• Journal Information: Physical Review Letters; (United States), Vol. 68:22; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
HEAVY ION REACTIONS
PARTICLE PRODUCTION
QUANTUM CHROMODYNAMICS
CHARM PARTICLES
CROSS SECTIONS
PLASMA
RELATIVISTIC RANGE
STRANGENESS
TEMPERATURE DEPENDENCE
CHARGED-PARTICLE REACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
FIELD THEORIES
NUCLEAR REACTIONS
PARTICLE PROPERTIES
QUANTUM FIELD THEORY
663450* - Heavy-Ion-Induced Reactions & Scattering- (1992-)
662230 - Quantum Chromodynamics- (1992-)