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Braun-Munzinger, P.; Stachel, J.; Wessels, J.P.; Xu, N.
Physics letters. B, 01/1996, Letnik: 365, Številka: 1Journal Article
The currently available set of hadron abundances at the SPS for central S + Au(W,Pb) collisions is compared to predictions from a scenario assuming local thermal and hadrochemical equilibrium. The data are consistent with a freeze-out temperature T = 160–170 MeV. Spectra are consistent with this temperature range and a moderate transverse expansion. The freeze-out points at the AGS and SPS are found to be close to the phase boundary between a hadron gas and an ideal quark-gluon phase.
