The Nuclear Modification Factor at Large Rapidities

Details The Nuclear Modification Factor at Large Rapidities The Nuclear Modification Factor at Large Rapidities

2005-11-15

arxiv.org/abs/hep-ph/0511190v1

Nucl.Phys. A774 (2006) 801-804

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 2 figures, Contribution to the Poster Proceedings of the Quark Matter 2005 Conference. To be published in Nuclear Phy

Scientific paper

10.1016/j.nuclphysa.2006.06.139

RHIC data on high-$p_T$ hadron production display strong suppression in a wide rapidity region, indicating strong induced energy loss for both transversally and longitudinally traveling partons. We investigate the interplay of energy loss and rapidity dependence in a perturbative QCD improved parton model, and estimate the opacity of the produced hot matter in $AuAu$ collisions at energies $\sqrt{s}=200$ $A$GeV and 63 $A$GeV at different rapidity values. Direction-dependent suppression offers the possibility to study the geometry of the hot matter.

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