Abstract.
Transverse energy, charged particle pseudorapidity distributions and photon transverse momentum spectra have been studied as a function of the number of participants (\(N_{part}\)) and the number of binary nucleon-nucleon collisions (\(N_{coll}\)) in 158\(\cdot A\) GeV Pb+Pb collisions over a wide impact parameter range. A scaling of the transverse energy pseudorapidity density at midrapidity as \(\sim N_{part}^{1.08 \pm 0.06}\) and \(\sim N_{coll}^{0.83 \pm 0.05}\) is observed. For the charged particle pseudorapidity density at midrapidity we find a scaling as \(\sim N_{part}^{1.07 \pm 0.04}\) and \(\sim N_{coll}^{0.82 \pm 0.03}\). This faster than linear scaling with \(N_{part}\) indicates a violation of the naive Wounded Nucleon Model.
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Received: 8 August 2000 / Revised version: 5 December 2000 / Published online: 5 February 2001
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The WA98 Collaboration., Aggarwal et al., M. Scaling of particle and transverse energy production in \(^{208}\)Pb+\(^{208}\)Pb collisions at 158\(\cdot A\) GeV. Eur. Phys. J. C 18, 651–663 (2001). https://doi.org/10.1007/s100520100578
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DOI: https://doi.org/10.1007/s100520100578