Directed flow of identified particles from Au plus Au collisions at RHIC

被引：1

作者：

Chen, Jiayun ^{[1
,2
]}

机构：

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

[2] Huazhong Normal Univ, Key Lab Quark & Lepton Phys, Minist Educ, Wuhan 430079, Peoples R China

来源：

INDIAN JOURNAL OF PHYSICS | 2010年 / 84卷 / 12期

基金：

中国国家自然科学基金;

关键词：

Directed flow; ZDC-SMDs; proton; antiproton; ANISOTROPIC FLOW;

D O I：

10.1007/s12648-010-0176-y

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present the measurement of directed flow (v(1)) for the identified particles, namely, Lambda, (Lambda) over bar and K-s(0), as a function of rapidity and centrality in Au+Au collisions at root S-NN = 200 GeV and 62.4 GeV. The measurement is based on the run IV data obtained by the STAR experiment at RHIC. In order to enhance event plane resolution, we use tracks reconstructed from the Forward Time Projection Chambers (FTPCs), together with the sideward deflection of spectator neutrons measured by the STAR's Shower Maximum Detector at Zero Degree Calorimeters (ZDC-SMDs). We find that for 200 GeV, proton and antiproton v(1) is less than 1%, the K-s(0), Lambda, (Lambda) over bar v(1), is less than 2%; for 62 GeV, proton v(1) is less than 1% and antiproton is less than 2%, v(1) for K-s(0), Lambda, (Lambda) over bar is less than 2% in Au+Au collisions at 200 GeV.

引用

页码：1801 / 1805

页数：5

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