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

被引：94

作者：

Wang, XN

机构：

[1] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Nucl Sci, Berkeley, CA 94720 USA

[2] Univ Washington, Inst Nucl Theory, Seattle, WA 98195 USA

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.81.2655

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Because of the rapidly falling particle spectrum at large p(T) from jet fragmentation at CERN SPS energy, the high-pr 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 lifetime of the dense partonic matter is very short or one has to rethink 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. [S0031-9007(98)07156-7].

引用

页码：2655 / 2658

页数：4

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