ar X iv : n uc l - ex / 0 10 80 16 v 1 1 4 A ug 2 00 1 Charged particle densities from Au + Au collisions at √ s NN = 130 GeV
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چکیده
Preprint submitted to Elsevier Science 28 February 2008 We present charged particle densities as a function of pseudorapidity and collision centrality for the Au+Au reaction at √ sNN=130 GeV. An integral charged particle multiplicity of 3860±300 is found for the 5% most central events within the pseudorapidity range −4.7 ≤ η ≤ 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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تاریخ انتشار 2001