Rapidity dependent strangeness measurements in BRAHMS experiment at RHIC

J. H. Lee, 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, O. Hansen, A. Holm, H. Ito, E. Jakobsen, A. JipaF. Jundt, J. I. Jørdre, C. E. Jørgensen, R. Karabowicz, E. J. Kim, T. Kozik, T. M. Larsen, J. H. Lee, Y. K. Lee, G. Løvhøiden, Z. Majka, A. Makeev, M. Mikelsen, M. Murray, J. Natowitz, B. S. Nielsen, J. Norris, K. Olchanski, J. Olness, D. Ouerdane, R. Płeneta, F. Rami, C. Ristea, D. Röhrich, B. H. Samset, D. Sandberg, S. J. Sanders, P. Staszel, T. S. Tveter, F. Videbæk, R. Wada, A. Wieloch, Z. Yin, I. S. Zgura

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Particle production of charged kaons in central Au+Au collisions at √SNN = 200 GeV has been studied as a function of rapidity by the BRAHMS collaboration at RHIC. The kaon spectral shapes are described well by an exponential in transverse mass for the rapidity range of 0 ≤ y K ≤ 3.3 with smoothly decreasing inverse slopes as the rapidity increases. For the charged kaon to pion ratios, while there is no significant rapidity dependence for the K++ ratio, the K -- ratio shows a significant decrease from y ≈ 1 towards higher rapidities. The systematics of K-/K+ and p̄/p ratios in the measured rapidity range demonstrates a strongly correlated behaviour which can be described by thermal-statistical models.

    Original languageEnglish (US)
    Pages (from-to)S85-S92
    JournalJournal of Physics G: Nuclear and Particle Physics
    Volume30
    Issue number1
    DOIs
    StatePublished - Jan 2004

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics

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