Centrality dependence of charged particle multiplicity at midrapidity in Au+Au collisions at [Formula Presented]

B. B. Back, M. D. Baker, D. S. Barton, R. R. Betts, R. Bindel, A. Budzanowski, W. Busza, A. Carroll, M. P. Decowski, E. Garcia, N. George, K. Gulbrandsen, S. Gushue, C. Halliwell, G. A. Heintzelman, C. Henderson, R. Hołyński, D. J. Hofman, B. Holzman, E. JohnsonJ. L. Kane, J. Katzy, N. Khan, W. Kucewicz, P. Kulinich, W. T. Lin, S. Manly, D. McLeod, J. Michałowski, A. C. Mignerey, J. Mülmenstädt, R. Nouicer, A. Olszewski, R. Pak, I. C. Park, H. Pernegger, C. Reed, L. P. Remsberg, M. Reuter, C. Roland, G. Roland, L. Rosenberg, P. Sarin, P. Sawicki, W. Skulski, S. G. Steadman, G. S.F. Stephans, P. Steinberg, M. Stodulski, A. Sukhanov, J. L. Tang, R. Teng, A. Trzupek, C. Vale, G. J. van Nieuwenhuizen, R. Verdier, B. Wadsworth, F. L.H. Wolfs, B. Wosiek, K. Woźniak, A. H. Wuosmaa, B. Wysłouch

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We present a measurement of the pseudorapidity density of primary charged particles near midrapidity in Au+Au collisions at [Formula Presented] as a function of the number of participating nucleons. The pseudorapidity density, [Formula Presented] rises from [Formula Presented] in peripheral events [Formula Presented] to [Formula Presented] in central events [Formula Presented] which is [Formula Presented] higher than [Formula Presented] collisions at a similar center-of-mass energy. This is consistent with an additional contribution to charged particle production that scales with the number of binary nucleon-nucleon collisions [Formula Presented].

Original languageEnglish
Pages (from-to)4
Number of pages1
JournalPhysical Review C - Nuclear Physics
Issue number3
StatePublished - 2002


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