CONFRONTING PARTICLE-EMISSION SCENARIOS WITH STRANGENESS DATA

We show that a hadron gas model with continuous particle emission inst ead of freeze-out may salve some of the problems (high values of the f reeze-out density and specific net charge) that one encounters in the latter case when studying strange particle ratios such as those from t he experiment WA85. This underlines the necessity to understand better particle emission in hydrodynamics to be able to analyze data. It als o reopens the possibility of a quark-hadron transition occurring with phase equilibrium instead of explosively. [S0031-9007(97)05187-9].