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Charged particle densities from Au+Au collisions at sqrt{s_{NN}}=130 GeV

BRAHMS Collaboration·I. G. Bearden
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Abstract

We present charged particle densities as a function of pseudorapidity and collision centrality for the 197Au+197Au reaction at sqrt{s_{NN}}=130 GeV. An integral charged particle multiplicity of 3860+/-300 is found for the 5% most central events within the pseudorapidity range -4.7 <= eta <= 4.7. At mid-rapidity an enhancement in the particle yields per participant nucleon pair is observed for central events. Near to the beam rapidity, a scaling of the particle yields consistent with the ``limiting fragmentation'' picture is observed. Our results are compared to other recent experimental and theoretical discussions of charged particle densities in ultra-relativistic heavy-ion collisions.

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BRAHMS Collaboration, I. G. Bearden. 2001-11-09. Charged particle densities from Au+Au collisions at sqrt{s_{NN}}=130 GeV. https://doi.org/10.1016/s0370-2693(01)01333-8

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