Inhomogeneities in the freeze-out of relativistic heavy ion collisions at CERN SPS

Abstract

We study the role of temperature and density inhomogeneities on the freeze-out of relativistic heavy ion collisions at CERN SPS. Especially the impact on the particle abundancies is investigated. The quality of the fits to the measured particle ratios in 158 AGeV Pb+Pb collisions significantly improves as compared to a homogeneous model.

To appear in the proceedings of 43rd International Winter Meeting on Nuclear Physics, Bormio, Italy, 13-20 Mar 2005