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27 April 2024

» pubmed » pmid15697798

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Evolution of the nuclear modification factors with rapidity and centrality in d + Au collisions at (sqrt)[N(S)N]=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 ; F Jundt ; J I Jørdre ; 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 Scheetz ; P Staszel ; T S Tveter ; F Videbaek ; R Wada ; Z Yin ; I S Zgura ; ;
Date:	10 Dec 2004
Journal:	Phys Rev Lett, 93 (24), 242303
Abstract:	We report on a study of the transverse momentum dependence of nuclear modification factors R(dAu) for charged hadrons produced in deuteron + gold collisions at sqrt[s(NN)]=200 GeV, as a function of collision centrality and of the pseudorapidity (eta=0, 1, 2.2, 3.2) of the produced hadrons. We find a significant and systematic decrease of R(dAu) with increasing rapidity. The midrapidity enhancement and the forward rapidity suppression are more pronounced in central collisions relative to peripheral collisions. These results are relevant to the study of the possible onset of gluon saturation at energies reached at BNL RHIC.
Source:	PubMed, pmid15697798
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