Universal Pion Freeze-out Phase-Space Density
arXiv:hep-ph/9901230 · doi:10.1016/S0375-9474(99)85044-1
Abstract
Results on the pion freeze-out phase-space density in sulphur-nucleus, Pb-Pb and pion-proton collisions at CERN-SPS are presented. All heavy-ion reactions are consistent with the thermal Bose-Einstein distrtibution f=1/(exp(E/T)-1) at T~120 MeV, modified for expansion. Pion-proton data are also consistent with f, but at T~180 MeV.
1 page, 1 figure; 98' report for GSI-Darmstadt