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arXiv · hep-ph/9804384

Where is the jet quenching in Pb+Pb collisions at 158 AGeV?

Xin-Nian Wang
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Abstract

Because of the rapidly falling particle spectrum at large $p_T$ from jet fragmentation at the CERN SPS energy, the high-$p_T$ hadron distribution should be highly sensitive to parton energy loss inside a dense medium as predicted by recent perturbative QCD (pQCD) studies. A careful analysis of recent data from CERN SPS experiments via pQCD calculation shows little evidence of energy loss. This implies that either the life-time of the dense partonic matter is very short or one has to re-think about the problem of parton energy loss in dense matter. The hadronic matter does not seem to cause jet quenching in $Pb+Pb$ collisions at the CERN SPS. High-$p_T$ two particle correlation in the azimuthal angle is proposed to further clarify this issue.

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Xin-Nian Wang. 1998-08-12. Where is the jet quenching in Pb+Pb collisions at 158 AGeV?. https://doi.org/10.1103/physrevlett.81.2655

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