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arXiv · hep-ph/9902342

Universal pion freeze-out phase-space density

D. Ferenc·U. Heinz·B. Tomasik·U. A. Wiedemann·J. G. Cramer
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Abstract

Results on the pion phase-space density at freeze-out in sulphur-nucleus, Pb-Pb and pi-p collisions at the CERN SPS are presented. All heavy-ion reactions are consistent with the thermal Bose-Einstein distribution f=1/[exp(E/T)-1] at T ~ 120 MeV, modified for radial expansion. pi-p data are also consistent with f, but at T ~ 180 MeV and without radial flow.

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D. Ferenc, U. Heinz, B. Tomasik, U. A. Wiedemann, J. G. Cramer. 1999-02-15. Universal pion freeze-out phase-space density. https://doi.org/10.1016/s0370-2693(99)00481-5

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