Jul, 1999
Systematics of inclusive photon production in 158 center dot A GeVPb induced reactions on Ni, Nb, and Pb targets
PHYSICS LETTERS B
- Volume
- 458
- Number
- 2-3
- First page
- 422
- Last page
- 430
- Language
- English
- Publishing type
- Research paper (scientific journal)
- Publisher
- ELSEVIER SCIENCE BV
The multiplicity of inclusive photons has been measured on an event-by-event basis for 158.A GeV Pb induced reactions on Ni, Nb, and Pb targets. The systematics of the pseudorapidity densities at midrapidity (rho(max)) and the width of the pseudorapidity distributions have been studied for varying centralities for these collisions. A power law fit to the photon yield as a function of the number of participating nucleons gives a value of 1.12 +/- 0.03 for the exponent. The mean transverse momentum, [p(T)], of photons determined from the ratio of the measured electromagnetic transverse energy and photon multiplicity, remains almost constant with increasing rho(max). Results are compared with model predictions. (C) 1999 Published by Elsevier Science B.V. All rights reserved.
- Link information
- ID information
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- ISSN : 0370-2693
- Web of Science ID : WOS:000081563500035