Dependence of ridge formation on trigger azimuth: Correlated emission model

被引：26

作者：

Chiu, Charles B. ^{[1
,2
]}

Hwa, Rudolph C. ^{[3
,4
]}

机构：

[1] Univ Texas Austin, Ctr Particles & Fields, Austin, TX 78712 USA

[2] Univ Texas Austin, Dept Phys, Austin, TX 78712 USA

[3] Univ Oregon, Inst Theoret Sci, Eugene, OR 97403 USA

[4] Univ Oregon, Dept Phys, Eugene, OR 97403 USA

来源：

PHYSICAL REVIEW C | 2009年 / 79卷 / 03期

关键词：

D O I：

10.1103/PhysRevC.79.034901

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：

Ridge formation in near-side correlation in heavy-ion collisions is studied in the framework of a phenomenological model called the correlated emission model. Successive soft emissions due to jet-medium interaction lead to the enhancement of thermal partons that follow the local flow directions. The correlation between the flow direction and the semihard parton direction is the major factor that causes the ridge formation to depend on the trigger direction relative to the reaction plane. With the use of a few parameters we have been able to reproduce the data on the ridge yields as functions of the trigger azimuthal angle for different centralities. An inside-outside asymmetry function is proposed to further probe the characteristics of the azimuthal correlation function. Insights are provided for the understanding of some detailed aspects of the centrality dependence.

引用

页数：10

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