Volume 78, Number 2, April 2007
|Number of page(s)||5|
|Published online||28 March 2007|
Hadron production in heavy relativistic systems
Institut für Theoretische Physik - Philosophenweg 16, 69120 Heidelberg, Germany
Accepted: 1 March 2007
We investigate particle production in heavy-ion collisions at RHIC energies as a function of incident energy, and centrality in a three-sources Relativistic Diffusion Model. Pseudorapidity distributions of produced charged hadrons in Au + Au and Cu + Cu collisions at GeV, 62.4 GeV, 130 GeV and 200 GeV show an almost equilibrated midrapidity source that tends to increase in size towards higher incident energy, and more central collisions. It may indicate quark-gluon plasma formation prior to hadronization.
PACS: 25.75.-q – Relativistic heavy-ion collisions / 24.60.Ky – Fluctuation phenomena / 24.10.Jv – Relativistic models
© Europhysics Letters Association, 2007
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