Dihadron and γ-hadron correlations from jet-induced medium excitation in high-energy heavy-ion collisions

被引：2

作者：

Wang, Xin-Nian ^{[1
,3
]}

Li, Han-Lin ^{[1
]}

Liu, Fu-Ming ^{[1
]}

Ma, Guo-Liang ^{[2
]}

Zhu, Yan ^{[1
]}

机构：

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

[2] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China

[3] Univ Calif Berkeley, Lawrence Berkeley Lab, Nucl Sci Div MS 70R0319, Berkeley, CA 94720 USA

来源：

NUCLEAR PHYSICS A | 2011年 / 855卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Jet; gamma-jet; Mach cone; dihadron; hot spot; harmonic flow; FLOW;

D O I：

10.1016/j.nuclphysa.2011.02.108

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Jet propagation is shown to produce Mach-cone-like medium excitation inside a quark-gluon plasma. However, only deflection of such medium excitation and jet shower partons by radial flow leads to double-peaked dihadron correlation in high-energy heavy-ion collisions. Dihadron correlations from harmonic flow, hot spots and dijets are studied separately within the AMPT Monte Carlo model and all lead to double-peaked dihadron azimuthal correlation. The gamma-hadron correlation has similar double-peak feature but is free of the contributions from harmonic flow and hot spots. Dihadron and gamma-hadron correlations are compared to shed light on jet-induced medium excitation and hot spots in an expanding medium.

引用

页码：469 / 472

页数：4

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