Charged-particle pseudorapidity density distributions from Au+Au collisions at √sNN=130 GeV

PHOBOS Collaboration

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The charged-particle pseudorapidity density dNch/dη has been measured for Au+Au collisions at √sNN=130 GeV at RHIC, using the PHOBOS ap- paratus. 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 mid-rapidity, while in the fragmentation regions, the results are consistent with expectations from pp and pA scattering.

Original languageEnglish
Article number102303
Pages (from-to)102303/1-102303/1
JournalPhysical Review Letters
Issue number10
StatePublished - 3 Sep 2001


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