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arXiv · 1007.0557

Jets propagation through a hadron-string medium

V. P. Konchakovski·E. L. Bratkovskaya·W. Cassing·M. I. Gorenstein
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Abstract

Di-jet correlations in nucleus-nucleus collisions are studied within the Hadron-String-Dynamics (HSD) transport approach taking into account the reaction of the medium on the jet energy loss nonperturbatively. A comparison with the STAR and PHENIX data in central Au+Au collisions at the RHIC energy $\sqrt{s}=200$ GeV is performed differentially, i.e. with respect to correlations in azimuthal angle $\Delta \phi$ and pseudorapidity $\Delta \eta$. The HSD results do not show enough suppression for the `away-side' jets in accordance with earlier perturbative studies. Furthermore, the `Mach-cone' structure for the angle distribution in the `away-side' jet as well as `ridge' long rapidity correlations in the `near-side' jet - observed by the STAR and PHOBOS Collaborations - are not seen in the HSD results, thus suggesting a partonic origin.

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V. P. Konchakovski, E. L. Bratkovskaya, W. Cassing, M. I. Gorenstein. 2010-07-04. Jets propagation through a hadron-string medium. https://doi.org/10.1103/physrevc.82.037902

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