Strangeness conservation in hot nuclear fireballs
- Laboratoire de Physique Theorique et Hautes Energies, Universite PARIS 7, Tour 24, 5e et., 2 Place Jussieu, F-75251, Paris, CEDEX 05 (France)
- Institut fuer Theoretische Physik, Universitaet Regensburg, D-93040 Regensburg (Germany)
- Department of Physics, University of Arizona, Tucson, Arizona 85721 (United States)
Within a thermal model generalized to allow for nonequilibrium strange particle abundances we study how the constraint that the balance of strangeness in a fireball is (nearly) zero impacts the allowable thermal fireball parameters. Using the latest data of the CERN-WA85 experiment for the case of 200[ital A] GeV S-[ital A] ([ital A][similar to]200) collisions we extract the values of the thermal parameters considering in detail the impact of hadronic resonance decays on the abundances and spectral form of strange baryons and antibaryons. Given these results and invoking further the observed charged particle multiplicities we are able to consider the (specific) entropy content of the fireball in order to understand the nature of the disagreement of the hadronic gas picture of the fireball with the experimental data.
- DOE Contract Number:
- FG02-92ER40733
- OSTI ID:
- 6472806
- Journal Information:
- Physical Review, D (Particles Fields); (United States), Vol. 51:7; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
HOT NUCLEI
NUCLEAR FIREBALLS
STRANGENESS
CONSERVATION LAWS
CONSTRAINTS
ENTROPY
MULTIPLICITY
NUCLEI
PARTICLE PROPERTIES
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES
663450* - Heavy-Ion-Induced Reactions & Scattering- (1992-)
662230 - Quantum Chromodynamics- (1992-)
663300 - Nuclear Reactions & Scattering
General- (1992-)