Longitudinal broadening of near side jets due to parton cascade

Abstract

Longitudinal broadening along $\Delta \eta$ direction on near side in two-dimensional ($\Delta \varphi \times \Delta \eta$) di-hadron correlation distribution has been studied for central Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV, within a dynamical multi-phase transport model. It was found that the longitudinal broadening is generated by a longitudinal flow induced by strong parton cascade in central Au+Au collisions, in comparison with p+p collisions at $\sqrt{s_{NN}}$ = 200 GeV. The longitudinal broadening may shed light on the information about strongly interacting partonic matter at RHIC.

arXiv comment5 pages, 4 figures; accepted by Eur. Phys. J. C

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