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APS » Journals » Phys. Rev. C » Volume 65 » Issue 3
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Phys. Rev. C 65, 031902(R) (2002) [5 pages]

Flow effects on the freeze-out phase-space density in heavy-ion collisions

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Boris Tomášik
Department of Physics, University of Virginia, P.O. Box 400714, Charlottesville, Virginia 22904-4714
CERN, Theory Division, CH-1211 Geneva, Switzerland

Ulrich Heinz
Department of Physics, The Ohio State University, 174 West 18th Avenue, Columbus, Ohio 43210

Received 21 August 2001; published 8 February 2002

The strong longitudinal expansion of the reaction zone formed in relativistic heavy-ion collisions is found to significantly reduce the spatially averaged pion phase-space density, compared to naive estimates based on thermal distributions. This has important implications for data interpretation and leads to larger values for the extracted pion chemical potential at kinetic freeze-out.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.65.031902
DOI:
10.1103/PhysRevC.65.031902
PACS:
25.75.Ld
 
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