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Centrality dependence of charged particle pseudorapidity distributions from d+Au collisions at $\sqrt{s_{NN}}$=200 GeV

Abstract : Charged-particle pseudorapidity densities are presented for the d+Au reaction at sqrt{s_{NN}}=200 GeV with -4.2 <= eta <= 4.2$. The results, from the BRAHMS experiment at RHIC, are shown for minimum-bias events and 0-30%, 30-60%, and 60-80% centrality classes. Models incorporating both soft physics and hard, perturbative QCD-based scattering physics agree well with the experimental results. The data do not support predictions based on strong-coupling, semi-classical QCD. In the deuteron-fragmentation region the central 200 GeV data show behavior similar to full-overlap d+Au results at sqrt{s_{NN}}=19.4 GeV.
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http://hal.in2p3.fr/in2p3-00023238
Contributor : Yvette Heyd Connect in order to contact the contributor
Submitted on : Friday, October 15, 2004 - 1:53:20 PM
Last modification on : Thursday, April 23, 2020 - 2:26:21 PM

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I. Arsene, I.G. Bearden, D. Beavis, C. Besliu, B. Budick, et al.. Centrality dependence of charged particle pseudorapidity distributions from d+Au collisions at $\sqrt{s_{NN}}$=200 GeV. Physical Review Letters, American Physical Society, 2005, 94, pp.32301-1 32301-5. ⟨10.1103/PhysRevLett.94.032301⟩. ⟨in2p3-00023238⟩

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