Longitudinal broadening of near-side jets due to parton cascade

G. L. Ma; S. Zhang; Y. G. Ma; X. Z. Cai; J. H. Chen; C. Zhong

doi:10.1140/epjc/s10052-008-0691-6

EPJ

Longitudinal broadening of near-side jets due to parton cascade

G. L. Ma¹, S. Zhang¹^,2, Y. G. Ma¹^*, X. Z. Cai¹, J. H. Chen¹^,2 and C. Zhong¹

¹ Shanghai Institute of Applied Physics, Chinese Academy of Sciences, P.O. Box 800-204, Shanghai, 201800, China
² Graduate School of the Chinese Academy of Sciences, Beijing, 100080, China

Received: 14 February 2008
Revised: 23 July 2008
Published online: 23 August 2008

Abstract

Longitudinal broadening along the Δη direction on the near side in the two-dimensional (Δφ×Δη) di-hadron correlation distribution has been studied for central Au+Au collisions at

GeV, within a dynamical multi-phase transport model. It was found that longitudinal broadening is generated by a longitudinal flow induced by a strong parton cascade in central Au+Au collisions, to be compared with p+p collisions at

GeV. The longitudinal broadening may shed light on the strongly interacting partonic matter at RHIC.

PACS: 25.75.Nq – / 25.75.Gz –

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EPJ

Longitudinal broadening of near-side jets due to parton cascade

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