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26 April 2024

» pubmed » pmid15698255

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Centrality dependence of charged-particle pseudorapidity distributions from d + Au collisions at sqrt[sNN] = 200 GeV
I Arsene ; I G Bearden ; D Beavis ; C Besliu ; B Budick ; H Bøggild ; C Chasman ; C H Christensen ; P Christiansen ; J Cibor ; R Debbe ; E Enger ; J J Gaardhøje ; M Germinario ; K Hagel ; H Ito ; A Jipa ; J I Jørdre ; F Jundt ; C E Jørgensen ; R Karabowicz ; E J Kim ; T Kozik ; T M Larsen ; J H Lee ; Y K Lee ; S Lindal ; R Lystad ; G Løvhøiden ; Z Majka ; A Makeev ; M Mikelsen ; M Murray ; J Natowitz ; B Neumann ; B S Nielsen ; D Ouerdane ; R P?aneta ; F Rami ; C Ristea ; O Ristea ; D Röhrich ; B H Samset ; D Sandberg ; S J Sanders ; R A Sheetz ; P Staszel ; T S Tveter ; F Videbaek ; R Wada ; Z Yin ; I S Zgura ; ;
Date:	28 Jan 2005
Journal:	Phys Rev Lett, 94 (3), 032301
Abstract:	Charged-particle pseudorapidity densities are presented for the d + Au reaction at sqrt[s(NN)] = 200 GeV with -4.2 < or = eta < or = 4.2. The results, from the BRAHMS experiment at BNL Relativistic Heavy-Ion Collider, 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, semiclassical 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.
Source:	PubMed, pmid15698255
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