Heavy quark energy loss in a nuclear medium

被引：287

作者：

Zhang, BW ^{[1
]}

Wang, E

Wang, XN

机构：

[1] Huazhong Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China

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

[3] Shandong Univ, Dept Phys, Jinan 250100, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 07期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1103/PhysRevLett.93.072301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Multiple scattering, modified fragmentation functions, and radiative energy loss of a heavy-quark propagating in a nuclear medium are investigated in perturbative QCD. Because of the quark mass dependence of the gluon formation time, the medium size dependence of heavy-quark energy loss is found to change from a linear to a quadratic form when the initial energy and momentum scale are increased relative to the quark mass. The radiative energy loss is also significantly suppressed relative to a light quark due to the suppression of collinear gluon emission by a heavy quark.

引用

页码：072301 / 1

页数：4

共 31 条

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