Universal pion freeze-out phase-space density
High Energy Physics - Phenomenology
2009-10-09 v1 Nuclear Theory
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.
Cite
@article{arxiv.hep-ph/9902342,
title = {Universal pion freeze-out phase-space density},
author = {D. Ferenc and U. Heinz and B. Tomasik and U. A. Wiedemann and J. G. Cramer},
journal= {arXiv preprint arXiv:hep-ph/9902342},
year = {2009}
}
Comments
15 pages LaTeX, including 6 postscript figures