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Particle Production in 158.A GeV 208Pb+208Pb Collisions

Conference ·
OSTI ID:4356
The production of neutral pions in 158A GeV {sup 208}Pb+{sup 208}Pb collisions has been studied in the WA98 experiment. The centrality dependence of the neutral pion production is investigated. An invariance of the spectral shape and a simple scaling of the yield with the number of participating nucleons is observed for centralities with more than about 50 participants. The transverse mass spectrum is analyzed in terms of a thermal model with hydrodynamic expansion. The high accuracy and large kinematic coverage of the measurement constrains the extracted freeze-out parameters, and provides information on the freeze-out velocity profile.
Research Organization:
Oak Ridge National Lab., TN (US)
Sponsoring Organization:
USDOE Office of Energy Research (ER) (US)
DOE Contract Number:
AC05-96OR22464
OSTI ID:
4356
Report Number(s):
ORNL/CP-102123; KB 02 01 02 2; KB 02 01 02 2
Country of Publication:
United States
Language:
English

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