Evolution of the nuclear modification factors with rapidity and centrality in d + Au collisions at √NSN = 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. JørgensenR. 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. Planeta, 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. Videbæk, R. Wada, Z. Yin, I. S. Zgura

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The transverse momentum dependence of nuclear modification factors R dAu for charged hadrons produced in d + Au collisions at √sNN=200 GeV, was investigated. A significant and systematic decrease of RdAu with increase in rapidity was observed. The central-to-peripheral collisions ratio was observed to be larger than the semicentral-to-peripheral ratio at low pseudorapidity, suggesting the increased role of Cronin-like multiple scattering effects in more violent collisions. At forward pseudorapidity, the more central ratio is smallest, which indicates a suppression mechanism. The results show that the midrapidity enhancement and the forward rapidity suppression were more pronounced in central collisions.

    Original languageEnglish (US)
    Article number242303
    JournalPhysical Review Letters
    Volume93
    Issue number24
    DOIs
    StatePublished - Dec 10 2004

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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