Charged particle densities from Au + Au collisions at √SNN = 130 GeV

I. G. Bearden, D. Beavis, C. Besliu, Y. Blyakhman, J. Brzychczyk, B. Budick, H. Boggild, C. Chasman, C. H. Christensen, P. Christiansen, J. Cibor, R. Debbe, J. J. Gaardhoje, K. Grotowski, K. Hagel, O. Hansen, A. Holm, A. K. Holme, H. Ito, E. JakobsenA. Jipa, J. I. Jordre, F. Jundt, C. E. Jorgensen, T. Keutgen, E. J. Kim, T. Kozik, T. M. Larsen, J. H. Lee, Y. K. Lee, G. Lovhoiden, Z. Majka, A. Makeev, E. McBreen, M. Murray, J. Natowitz, B. S. Nielsen, K. Olchanski, J. Olness, D. Ouerdane, R. Planeta, F. Rami, D. Röhrich, B. H. Samset, S. J. Sanders, R. A. Sheetz, Z. Sosin, P. Staszel, T. F. Thorsteinsen, T. S. Tveter, F. Videbak, R. Wada, A. Wieloch, I. S. Zgura

    Research output: Contribution to journalArticlepeer-review


    We present charged particle densities as a function of pseudorapidity and collision centrality for the 197Au+197Au reaction at SNN = 130 GeV. An integral charged particle multiplicity of 3860 ± 300 is found for the 5% most central events within the pseudorapidity range -4.7 ≤ η ≤ 4.7. At mid-rapidity an enhancement in the particle yields per participant nucleon pair is observed for central events. Near to the beam rapidity, a scaling of the particle yields consistent with the "limiting fragmentation" picture is observed. Our results are compared to other recent experimental and theoretical discussions of charged particle densities in ultra-relativistic heavy-ion collisions.

    Original languageEnglish (US)
    Pages (from-to)227-233
    Number of pages7
    JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
    Issue number3-4
    StatePublished - Dec 27 2001

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics


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