Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2002-05-17
Physics
High Energy Physics
High Energy Physics - Experiment
4 pages, 4 figs. Invited talk at the XXXVIIth Rencontres de Moriond - QCD and High Energy Hadronic Interactions, Les Arcs, Sav
Scientific paper
Hard processes in nucleus-nucleus interactions at relativistic energies are reviewed with emphasis on recent PHENIX results from the first run of the Relativistic Heavy-Ion Collider at BNL. The observed suppression of moderately high $p_T$ hadrons ($p_T$ = 2 - 5 GeV/c) in $\sqrt{s_{NN}}$ = 130 GeV $Au+Au$ central collisions with respect to the scaled $pp$ data, is discussed in terms of conventional nuclear and ``quark-gluon-plasma'' effects. The meson and baryon composition at high $p_T$, as well as the implications for open charm of the measured single electron spectrum are also presented.
d'Enterria David G.
for the PHENIX Collaboration
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