Interpretation of the first data on central Au+Au collisions at √s = 56A and 130A GeV

Sangyong Jeon, Joseph Kapusta

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We compare three semimicroscopic theories to the first data on particle production in central Au+ Au collisions taken at RHIC by the PHOBOS Collaboration as well as to existing data on central Pb+Pb collisions taken at the SPS by the NA49 Collaboration. The Linear Extrapolation of Ultrarelativistic nucleon-nucleon Scattering to nucleus-nucleus collisions (LEXUS) represents the SPS data quite well but predicts too many particles at RHIC. The wounded nucleon model predicts too few particles at both the SPS and RHIC; the collective tube model predicts fewer particles still. This suggests a transition in the dynamics of particle production between √s= 17 and 56A GeV as one goes from the SPS to RHIC.

Original languageEnglish (US)
Article number011901
Pages (from-to)119011-119013
Number of pages3
JournalPhysical Review C - Nuclear Physics
Issue number1
StatePublished - Jan 2001


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