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Chemical equilibrium in collisions of small systems

Kraus, I. ; Cleymans, J. ; Oeschler, H. ; Redlich, K. ; Wheaton, S.

Physical review. C, Nuclear physics, 2007-12, Vol.76 (6), Article 064903 [Periódico revisado por pares]

United States

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Título:
Chemical equilibrium in collisions of small systems
Autor: Kraus, I. ; Cleymans, J. ; Oeschler, H. ; Redlich, K. ; Wheaton, S.
Assuntos: CARBON 12 REACTIONS ; CARBON 12 TARGET ; CERN SPS SYNCHROTRON ; COLLIDING BEAMS ; COMPARATIVE EVALUATIONS ; CORRELATIONS ; EQUILIBRIUM ; GEV RANGE ; LEAD 208 REACTIONS ; LEAD 208 TARGET ; NUCLEAR PHYSICS AND RADIATION PHYSICS ; NUCLEAR REACTION YIELD ; PARTICLE PRODUCTION ; PROTON-PROTON INTERACTIONS ; PROTONS ; RELATIVISTIC RANGE ; SILICON 28 REACTIONS ; SILICON 28 TARGET ; STATISTICAL MODELS ; STRANGE PARTICLES ; STRANGENESS
É parte de: Physical review. C, Nuclear physics, 2007-12, Vol.76 (6), Article 064903
Descrição: The system-size dependence of particle production in heavy-ion collisions at the top energy at the CERN Super Proton Synchrotron is analyzed in terms of the statistical model. A systematic comparison is made of two suppression mechanisms that quantify strange-particle yields in ultrarelativistic heavy-ion collisions: the canonical model with strangeness correlation radius determined from the data and the model formulated in the canonical ensemble using chemical off-equilibrium strangeness suppression factor. The system-size dependence of the correlation radius and the thermal parameters are obtained for p-p, C-C, Si-Si, and Pb-Pb collisions at {radical}(s{sub NN})=17.3A GeV. It is shown that on the basis of a consistent set of data there is no clear difference between the two suppression patterns. In the present study, the strangeness correlation radius was found to exhibit a rather weak dependence on the system size.
Editor: United States
Idioma: Inglês

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Chemical equilibrium in collisions of small systems

Kraus, I. ; Cleymans, J. ; Oeschler, H. ; Redlich, K. ; Wheaton, S.

United States

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