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Title: Thermalization in ultrarelativistic nuclear collisions. II. Entropy production and energy densities at the BNL Relativistic Heavy Ion Collider and the CERN Large Hadron Collider

Abstract

The dynamics of partons in ultrarelativistic [sup 197]Au+[sup 197]Au collisions in the future collider experiments at the BNL Relativistic Heavy Ion Collider and the CERN Large Hadron Collider during the first 3 fm/[ital c] is simulated in full six-dimensional phase space within a parton cascade model to compute the entropy production and the space-time-dependent energy densities, temperatures, etc., in the central collision region. The partons' evolution from preequilibrium towards the formation of a thermalized quark-gluon plasma is investigated and compared to the Bjorken scenario. Moreover, an equation of state is extracted together with initial conditions for the further hydrodynamical space-time evolution of the matter. For central [sup 197]Au+[sup 197]Au collisions with [radical][ital s] =200--6300[ital A] GeV the predictions for the energy densities and associated temperatures at [ital t]=3 fm/[ital c] after the first instant of the collisions are [var epsilon]=15--31 GeV/fm[sup 3] and [ital T]=297--343 MeV, respectively. The multiplicity of final pions from the plasma is estimated from the amount of entropy produced, yielding a huge [ital dN][sup ([pi])]/[ital dy][congruent]1900--3400.

Authors:
 [1]
  1. School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455 (United States)
Publication Date:
OSTI Identifier:
6967094
DOE Contract Number:  
FG02-87ER40328
Resource Type:
Journal Article
Journal Name:
Physical Review, D (Particles Fields); (United States)
Additional Journal Information:
Journal Volume: 46:11; Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; GOLD 197; HEAVY ION REACTIONS; ENTROPY; NUCLEON-NUCLEON INTERACTIONS; CASCADE THEORY; ENERGY DENSITY; EQUATIONS OF STATE; HYDRODYNAMIC MODEL; MANY-DIMENSIONAL CALCULATIONS; PARTON MODEL; PHASE SPACE; QUANTUM CHROMODYNAMICS; QUARK MATTER; RELATIVISTIC RANGE; SPACE-TIME; TEV RANGE; BARYON-BARYON INTERACTIONS; CHARGED-PARTICLE REACTIONS; COMPOSITE MODELS; ENERGY RANGE; EQUATIONS; FIELD THEORIES; GOLD ISOTOPES; HADRON-HADRON INTERACTIONS; HEAVY NUCLEI; INTERACTIONS; INTERNAL CONVERSION RADIOISOTOPES; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; MATHEMATICAL MODELS; MATHEMATICAL SPACE; MATTER; NUCLEAR REACTIONS; NUCLEI; ODD-EVEN NUCLEI; PARTICLE INTERACTIONS; PARTICLE MODELS; PHYSICAL PROPERTIES; QUANTUM FIELD THEORY; RADIOISOTOPES; SECONDS LIVING RADIOISOTOPES; SPACE; STABLE ISOTOPES; STATISTICAL MODELS; THERMODYNAMIC MODEL; THERMODYNAMIC PROPERTIES; 662340* - Hadron Interactions- (1992-); 662230 - Quantum Chromodynamics- (1992-)

Citation Formats

Geiger, K. Thermalization in ultrarelativistic nuclear collisions. II. Entropy production and energy densities at the BNL Relativistic Heavy Ion Collider and the CERN Large Hadron Collider. United States: N. p., 1992. Web. doi:10.1103/PhysRevD.46.4986.
Geiger, K. Thermalization in ultrarelativistic nuclear collisions. II. Entropy production and energy densities at the BNL Relativistic Heavy Ion Collider and the CERN Large Hadron Collider. United States. doi:10.1103/PhysRevD.46.4986.
Geiger, K. Tue . "Thermalization in ultrarelativistic nuclear collisions. II. Entropy production and energy densities at the BNL Relativistic Heavy Ion Collider and the CERN Large Hadron Collider". United States. doi:10.1103/PhysRevD.46.4986.
@article{osti_6967094,
title = {Thermalization in ultrarelativistic nuclear collisions. II. Entropy production and energy densities at the BNL Relativistic Heavy Ion Collider and the CERN Large Hadron Collider},
author = {Geiger, K},
abstractNote = {The dynamics of partons in ultrarelativistic [sup 197]Au+[sup 197]Au collisions in the future collider experiments at the BNL Relativistic Heavy Ion Collider and the CERN Large Hadron Collider during the first 3 fm/[ital c] is simulated in full six-dimensional phase space within a parton cascade model to compute the entropy production and the space-time-dependent energy densities, temperatures, etc., in the central collision region. The partons' evolution from preequilibrium towards the formation of a thermalized quark-gluon plasma is investigated and compared to the Bjorken scenario. Moreover, an equation of state is extracted together with initial conditions for the further hydrodynamical space-time evolution of the matter. For central [sup 197]Au+[sup 197]Au collisions with [radical][ital s] =200--6300[ital A] GeV the predictions for the energy densities and associated temperatures at [ital t]=3 fm/[ital c] after the first instant of the collisions are [var epsilon]=15--31 GeV/fm[sup 3] and [ital T]=297--343 MeV, respectively. The multiplicity of final pions from the plasma is estimated from the amount of entropy produced, yielding a huge [ital dN][sup ([pi])]/[ital dy][congruent]1900--3400.},
doi = {10.1103/PhysRevD.46.4986},
journal = {Physical Review, D (Particles Fields); (United States)},
issn = {0556-2821},
number = ,
volume = 46:11,
place = {United States},
year = {1992},
month = {12}
}