Elliptic flow of φ mesons and strange quark collectivity

被引：73

作者：

Chen, J. H.

Ma, Y. G. ^{[1
]}

Ma, G. L.

Cai, X. Z.

He, Z. J.

Huang, H. Z.

Long, J. L.

Shen, W. Q.

Zhong, C.

Zuo, J. X.

机构：

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

[2] Chinese Acad Sci, Grad Sch, Beijing 100080, Peoples R China

[3] Univ Calif Los Angeles, Los Angeles, CA 90095 USA

来源：

PHYSICAL REVIEW C | 2006年 / 74卷 / 06期

关键词：

HEAVY-ION COLLISIONS; RELATIVISTIC NUCLEAR COLLISIONS; ANISOTROPIC FLOW; PHASE-TRANSITION; PARTON CASCADE; ENERGY; DEPENDENCE; SIGNATURE; FRAGMENTATION; HYDRODYNAMICS;

D O I：

10.1103/PhysRevC.74.064902

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：

Based on a multiphase transport model, we have studied the elliptic flow v(2) of phi mesons from the reconstructed K+K- decay channel at the top Relativistic Heavy Ion Collider energy at Brookhaven National Laboratory. The dependences of v(2) on transverse momentum p(T) and collision centrality are presented and the rescattering effect of phi mesons in the hadronic phase is also investigated. The results show that experimental measurement of v(2) for phi mesons can retain the early collision information before the phi decays and that the phi v(2) value obeys the constituent quark number scaling that has been observed for other mesons and baryons. Our study indicates that the phi v(2) mostly reflects partonic-level collectivity developed during the early stage of the nucleus-nucleus collision and the strange and light up/down quarks have developed similar angular anistropy properties at the hadronization.

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