Centrality dependent particle production at y=0 and y~1 in Au+Au collisions at 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, 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. Płaneta, 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

    Research output: Contribution to journalArticle

    Abstract

    Particle production of identified charged hadrons, π±,K±, p, and p̄ in Au+Au collisions at sNN= 200 GeV, has been studied as a function of transverse momentum and collision centrality at y=0 and y~1 by the BRAHMS experiment at Brookhaven National Laboratory's Relativistic Heavy-Ion Collider. Significant collective transverse flow at kinetic freeze-out has been observed in the collisions. The magnitude of the flow rises with the collision centrality. Proton and kaon yields relative to the pion production increase strongly as the transverse momentum increases and also increase with centrality. Particle yields per participant nucleon show a weak dependence on the centrality for all particle species. Hadron production remains relatively constant within one unit around midrapidity in Au+Au collisions at sNN= 200 GeV.

    Original languageEnglish (US)
    Article number014908
    JournalPhysical Review C - Nuclear Physics
    Volume72
    Issue number1
    DOIs
    StatePublished - Jul 2005

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics

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