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Phys. Rev. C 57, 1907–1919 (1998)

Modeling the breakup stage of relativistic heavy-ion collisions

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Scott Pratt and Joelle Murray
Department of Physics and Astronomy and National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824

Received 2 September 1997; published in the issue dated April 1998

By using the output of a thermal model as the input to a hadronic cascade, we investigate the role of kinetic and chemical equilibrium in the breakup stage of 158AGeV/c Pb+Pb collisions at CERN. Gross features of experimental pion and proton spectra are fit, as well as the transverse energy and baryons per unit rapidity. However, experimental source sizes extracted from pion correlations and the low pt behavior of pion spectra are not reproduced. We argue that pionic phase space has become overpopulated compared to equilibrium considerations. Other issues regarding chemical and kinetic equilibration are also explored.

© 1998 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.57.1907
DOI:
10.1103/PhysRevC.57.1907
PACS:
25.75.Gz, 25.75.Ld, 24.10.Pa