| Автор | Jean Letessier |
| Автор | Johann Rafelski |
| Дата выпуска | 1999-02-01 |
| dc.description | Strange particles produced in S-Au/W/Pb 200 A GeV and Pb-Pb 158 A GeV reactions are described invoking final hadronic phase space in thermal equilibrium, but allowing chemical nonequilibrium. Several sets of statistical freeze-out parameters are obtained for each system, invoking different models of dense matter. We show that only when allowing for strange and non-strange flavour abundance nonequilibrium, a statistically significant description of the experimental results is obtained. Physical properties of the fireball at chemical freeze-out condition are evaluated and considerable universality of hadron freeze-out between the two different collision systems is established. The relevance of the Coulomb effect in the highly charged Pb-Pb fireballs for the chemical analysis are discussed. The influence of explosive collective matter flow is also described. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Chemical nonequilibrium in high-energy nuclear collisions |
| Тип | paper |
| DOI | 10.1088/0954-3899/25/2/018 |
| Electronic ISSN | 1361-6471 |
| Print ISSN | 0954-3899 |
| Журнал | Journal of Physics G: Nuclear and Particle Physics |
| Том | 25 |
| Первая страница | 295 |
| Последняя страница | 309 |
| Выпуск | 2 |
