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Directed Flow of Identified Particles in Au plus Au Collisions at root S-NN=200 GeV at RHIC

文献类型:期刊论文

作者Adamczyk, L.1; Agakishiev, G.19; Aggarwal, M. M.30; Ahammed, Z.48; Alakhverdyants, A. V.19; Alekseev, I.17; Alford, J.20; Anderson, B. D.20; Anson, C. D.28; Arkhipkin, D.3
刊名PHYSICAL REVIEW LETTERS
出版日期2012-05-15
卷号108
ISSN号0031-9007
DOI10.1103/PhysRevLett.108.202301
文献子类Article
英文摘要STAR's measurements of directed flow (v(1)) around midrapidity for pi(+/-), K-+/-, K-S(0), p, and (p) over bar in Au + Au collisions at root s(NN) = 200 GeV are presented. A negative v(1) (y) slope is observed for most of produced particles (pi(+/-), K-+/-, K-S(0), p, and (p) over bar). In 5%-30% central collisions, a sizable difference is present between the v(1)(y) slope of protons and antiprotons, with the former being consistent with zero within errors. The v(1) excitation function is presented. Comparisons to model calculations (RQMD, UrQMD, AMPT, QGSM with parton recombination, and a hydrodynamics model with a tilted source) are made. For those models which have calculations of v(1) for both pions and protons, none of them can describe v(1()y) forpions and protons simultaneously. The hydrodynamics model with a tilted source as currently implemented cannot explain the centrality dependence of the difference between the v(1)(y) slopes of protons and antiprotons.
WOS关键词HEAVY-ION COLLISIONS ; QUARK-GLUON PLASMA ; GEV AU+AU COLLISIONS ; ANISOTROPIC FLOW ; COLLECTIVE FLOW ; TRANSVERSE FLOW ; STAR ; COLLABORATION ; PERSPECTIVE
资助项目DFG cluster of excellence "Origin and Structure of the Universe'' of Germany[CNRS/IN2P3]
WOS研究方向Physics
语种英语
WOS记录号WOS:000304064000006
出版者AMER PHYSICAL SOC
源URL[http://119.78.100.186/handle/113462/48881]  
专题中国科学院近代物理研究所
通讯作者Adamczyk, L.
作者单位1.Krakow Univ Technol, Krakow, Poland
2.Argonne Natl Lab, Argonne, IL 60439 USA
3.Brookhaven Natl Lab, Upton, NY 11973 USA
4.Univ Calif Berkeley, Berkeley, CA 94720 USA
5.Univ Calif Davis, Davis, CA 95616 USA
6.Univ Calif Los Angeles, Los Angeles, CA 90095 USA
7.Univ Estadual Campinas, Sao Paulo, Brazil
8.Cent China Normal Univ HZNU, Wuhan 430079, Peoples R China
9.Univ Illinois, Chicago, IL 60607 USA
10.Creighton Univ, Omaha, NE 68178 USA
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Adamczyk, L.,Agakishiev, G.,Aggarwal, M. M.,et al. Directed Flow of Identified Particles in Au plus Au Collisions at root S-NN=200 GeV at RHIC[J]. PHYSICAL REVIEW LETTERS,2012,108.
APA Adamczyk, L..,Agakishiev, G..,Aggarwal, M. M..,Ahammed, Z..,Alakhverdyants, A. V..,...&STAR Collaboration.(2012).Directed Flow of Identified Particles in Au plus Au Collisions at root S-NN=200 GeV at RHIC.PHYSICAL REVIEW LETTERS,108.
MLA Adamczyk, L.,et al."Directed Flow of Identified Particles in Au plus Au Collisions at root S-NN=200 GeV at RHIC".PHYSICAL REVIEW LETTERS 108(2012).

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来源:近代物理研究所

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