Phys. Rev. C 65, 031901(R) (2002) [4 pages]Centrality dependence of charged particle multiplicity at midrapidity in Au+Au collisions at √sNN=130 GeV
We present a measurement of the pseudorapidity density of primary charged particles near midrapidity in Au+Au collisions at √sNN=130 GeV as a function of the number of participating nucleons. The pseudorapidity density, dNch/dη||η|<1/(1/2〈Npart〉), rises from 2.87±0.21 in peripheral events (〈Npart〉∼83) to 3.45±0.18 in central events (〈Npart〉∼353), which is 53±8% higher than pp̅ 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 (Ncoll). © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevC.65.031901
DOI:
10.1103/PhysRevC.65.031901
PACS:
25.75.Dw
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