Abstract
We report high statistics measurements of inclusive charged hadron production in Au+Au collisions at \(\sqrt {s_{NN} } = 200\) GeV and 130 GeV. A large, approximately constant hadron suppression is observed in central Au+Au collisions for 5 ‖p T ‖ 12 GeV/c. The collision energy dependence of the yields and the centrality and p T dependence of the suppression provide stringent constraints on theoretical models of suppression. Models incorporating initial-state gluon saturation or partonic energy loss in dense matter are largely consistent with observations. The p T -dependent suppression expected from models incorporating jet attenuation in cold nuclear matter or absorption of fragmentation hadrons is not observed.
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Dunlop, J.C., the STAR Collaboration. Charged hadron suppression in Au+Au collisions at high p T from STAR. Acta Phys. Hung. A 21, 215–220 (2004). https://doi.org/10.1556/APH.21.2004.2-4.18
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DOI: https://doi.org/10.1556/APH.21.2004.2-4.18