Phys. Rev. Lett. 87, 102303 (2001) [4 pages]Charged-Particle Pseudorapidity Density Distributions from Au+Au Collisions at √sNN = 130GeVReceived 6 June 2001; published 21 August 2001 The charged-particle pseudorapidity density dNch/dη has been measured for Au+Au collisions at √sNN = 130GeV at RHIC, using the PHOBOS apparatus. The total number of charged particles produced for the 3% most-central Au+Au collisions for |η|≤5.4 is found to be 4200±470. The evolution of dNch/dη with centrality is discussed, and compared to model calculations and to data from proton-induced collisions. The data show an enhancement in charged-particle production at midrapidity, while in the fragmentation regions, the results are consistent with expectations from pp and pA scattering. © 2001 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.87.102303
DOI:
10.1103/PhysRevLett.87.102303
PACS:
25.75.-q
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