Transverse momentum dependence of charged and strange hadron elliptic flows in Cu-Cu collisions

被引：6
|
作者：
Li, Bao-Chun [1 ]
Fu, Yuan-Yuan [1 ]
Wang, Er-Qin [1 ]
Wang, Li-Li [2 ]
Liu, Fu-Hu [1 ]
机构：
[1] Shanxi Univ, Dept Phys, Taiyuan 030006, Shanxi, Peoples R China
[2] Shanxi Univ, Coll Business, Dept Math, Taiyuan 030031, Shanxi, Peoples R China
来源：
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS | 2012年 / 39卷 / 08期
基金：
中国国家自然科学基金;
关键词：
QUARK-GLUON PLASMA; SIGNATURE; STAR;
D O I：
10.1088/0954-3899/39/8/085109
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：
We investigate the dependence of elliptic flows nu(2) on transverse momentum P-T for charged and strange hadrons produced in Cu-Cu collisions by using a multi-source thermal model, which includes the interaction contribution of the emission sources. The magnitude of the expansion is denoted by a expansion factor k. Our calculated results are approximately in agreement with the experimental data in Cu-Cu collisions at root s(NN) = 62.4 and 200 GeV, measured by the STAR Collaboration. It is found that the expansion factor increases linearly with the impact parameter from the most central (0-10%) to mid-peripheral (40-50%) collisions.
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页数：9
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