Centrality and pseudorapidity dependence of elliptic flow for charged hadrons in Au+Au collisions at √ s NN = 200 GeV

IF 3.4 2区物理与天体物理 Q1 Physics and Astronomy Physical Review C Pub Date : 2005-11-01 DOI:10.1103/PHYSREVC.72.051901

B. Back, W. Kucewicz, A. Iordanova, A. Budzanowski, C. Halliwell, A. Olszewski, L. Rosenberg, P. Steinberg, M. Reuter, W. Skulski, Jaw-Luen Tang, K. Woźniak, C. Henderson, W. Lin, B. Wyslouch, E. Garcia, C. Reed, A. Bickley, M. Nguyen, G. Nieuwenhuizen, Baker, I. Park, G. Stephans, S. Manly, R. Betts, M. Ballintijn, R. Verdier, M. Tonjes, G. Heintzelman, D. Barton, P. Sarin, A. Carroll, C. Vale, W. Busza, P. Kulinich, L. Remsberg, N. Khan, A. Trzupek, S. Gushue, G. Roland, D. Mcleod, A. Sukhanov, R. Pak, J. Hamblen, J. Kane, R. Hollis, A. Wuosmaa, R. Bindel, F. Wolfs, D. Hofman, B. Wosiek, R. Nouicer, J. Sagerer, H. Pernegger, E. Johnson, A. Mignerey, K. Gulbrandsen, P. Sawicki, R. Hołyński, M. Decowski, G. Veres, N. George, B. Holzman, C. Kuo, J. Katzy, C. Roland

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引用次数: 129

Abstract

This Rapid Communication describes the measurement of elliptic flow for charged particles in Au+Au collisions at {radical}(s{sub NN})=200 GeV using the PHOBOS detector at the Relativistic Heavy Ion Collider. The measured azimuthal anisotropy is presented over a wide range of pseudorapidity for three broad collision centrality classes for the first time at this energy. Two distinct methods of extracting the flow signal were used to reduce systematic uncertainties. The elliptic flow falls sharply with increasing |{eta}| at 200 GeV for all the centralities studied, as observed for minimum-bias collisions at {radical}(s{sub NN})=130 GeV.

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200 GeV下Au+Au碰撞中带电强子椭圆流的中心性和赝快度依赖性

本文描述了在相对论重离子对撞机上使用PHOBOS探测器测量在{radical}(s{sub NN})=200 GeV的Au+Au碰撞中带电粒子的椭圆流。在此能量下，首次给出了三种广义碰撞中心度类在大范围伪快度范围内的方位各向异性测量结果。采用两种不同的方法提取流量信号，以减少系统的不确定性。在200 GeV时，椭圆流随着|{eta}|的增加而急剧下降，在{radical}(s{sub NN})=130 GeV时，最小偏置碰撞的结果也是如此。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Physical Review C 物理-物理：核物理

CiteScore

5.70

自引率

35.50%

发文量

审稿时长

1-2 weeks

期刊介绍： Physical Review C (PRC) is a leading journal in theoretical and experimental nuclear physics, publishing more than two-thirds of the research literature in the field. PRC covers experimental and theoretical results in all aspects of nuclear physics, including: Nucleon-nucleon interaction, few-body systems Nuclear structure Nuclear reactions Relativistic nuclear collisions Hadronic physics and QCD Electroweak interaction, symmetries Nuclear astrophysics