Strangeness conservation in hot nuclear fireballs

Jean Letessier, Ahmed Tounsi, Ulrich Heinz, Josef Sollfrank, Johann Rafelski

Research output: Contribution to journalArticle

117 Citations (Scopus)

Abstract

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 200A GeV S-A (A∼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.

Original languageEnglish (US)
Pages (from-to)3408-3435
Number of pages28
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume51
Issue number7
DOIs
StatePublished - 1995

Fingerprint

fireballs
strangeness
conservation
baryons
charged particles
entropy
collisions
decay
gases

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Strangeness conservation in hot nuclear fireballs. / Letessier, Jean; Tounsi, Ahmed; Heinz, Ulrich; Sollfrank, Josef; Rafelski, Johann.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 51, No. 7, 1995, p. 3408-3435.

Research output: Contribution to journalArticle

Letessier, Jean ; Tounsi, Ahmed ; Heinz, Ulrich ; Sollfrank, Josef ; Rafelski, Johann. / Strangeness conservation in hot nuclear fireballs. In: Physical Review D - Particles, Fields, Gravitation and Cosmology. 1995 ; Vol. 51, No. 7. pp. 3408-3435.
@article{ba32ee1805c54c6d8ab1051f919c28e6,
title = "Strangeness conservation in hot nuclear fireballs",
abstract = "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 200A GeV S-A (A∼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.",
author = "Jean Letessier and Ahmed Tounsi and Ulrich Heinz and Josef Sollfrank and Johann Rafelski",
year = "1995",
doi = "10.1103/PhysRevD.51.3408",
language = "English (US)",
volume = "51",
pages = "3408--3435",
journal = "Physical review D: Particles and fields",
issn = "0556-2821",
publisher = "American Institute of Physics",
number = "7",

}

TY - JOUR

T1 - Strangeness conservation in hot nuclear fireballs

AU - Letessier, Jean

AU - Tounsi, Ahmed

AU - Heinz, Ulrich

AU - Sollfrank, Josef

AU - Rafelski, Johann

PY - 1995

Y1 - 1995

N2 - 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 200A GeV S-A (A∼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.

AB - 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 200A GeV S-A (A∼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.

UR - http://www.scopus.com/inward/record.url?scp=25944451059&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=25944451059&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.51.3408

DO - 10.1103/PhysRevD.51.3408

M3 - Article

VL - 51

SP - 3408

EP - 3435

JO - Physical review D: Particles and fields

JF - Physical review D: Particles and fields

SN - 0556-2821

IS - 7

ER -