Strange Resonance Production: Probing Chemical and Thermal Freeze-out in   Relativistic Heavy Ion Collisions
  The production and the observability of $\Lambda(1520)$, $K^0(892)$ $\Phi$ and $\Delta(1232)$ hadron resonances in central Pb+Pb collisions at 160 AGeV is addressed. The rescattering probabilities of the resonance decay products in the systems evolution are studied. Strong changes in the reconstructable particle yields and spectra between chemical and thermal freeze-out are estimated. Abundances and spectra of reconstructable resonances are predicted. 
Marcus Bleicher and J\"org Aichelin