paper

From mach cone to reappeared jet: What do we learn from PHENIX results on non-identified jet correlation?

arXiv:nucl-ex/0510019 · doi:10.1063/1.2197420

Abstract

High jets are known to be strongly modified by the dense, strongly interacting medium created in heavy-ion collisions. The jet signal, extracted from two particle correlation, shows a systematic evolution of these modifications as function of and centrality. At intermediate , both near side and away side correlations are modified. But the modifications are much stronger at the away side, resulting in a characteristic cone type of structure in central Au + Au collisions. The robustness of cone structure is strengthened by studying the jet shape as function of angle relative to the reaction plane. As one increase the for BOTH hadrons, the cone structure seems to be filled up, and a peak structure appears on the away side. However, the interpretation of these results require careful separation of medium effect and surface bias.

8 pages, 9 figures. Proceedings for "XXXV International Symposium on Multiparticle Dynamics 2005", replace the figures and fixes some typoes

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