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Thermal hadron production in Si-Au collisions |
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| Authors: | J. Cleymans D. Elliott H. Satz R. L. Thews |
| Affiliation: | 1. Department of Physics, University of Cape Town, Rondebosch, 7700, South Africa 2. Theory Division, CERN, CH-1211, Geneva 23, Switzerland 3. Fakult?t für Physik, Universit?t Bielefeld, D-33501, Bielefeld, Germany 4. Department of Physics, University of Arizona, Tucson, AZ85721, USA |
| Abstract: | The most abundantly produced hadron species in Si - Au collisions at the BNL-AGS (nucleons, pions, kaons, antikaons and hyperons) are shown to be in accord with emission from a thermal resonance gas source. Within the uncertainties of the present data, two freeze-out points are possible. The best agreement is obtained for a temperature T ? 110 MeV and a baryochemical potential μB ? 540 MeV, corresponding to about 1/3 standard nuclear density. Another possible point lies at about twice nuclear density, with T ? 160 MeV and μB ? 620 MeV. Our analysis takes the isopin asymmetry of the initial state fully into account. |
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