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Beam-Energy Dependence of Charge Separation along the Magnetic Field in Au plus Au Collisions at RHIC

文献类型:期刊论文

作者Adamczyk, L.1; Adkins, J. K.23; Agakishiev, G.21; Aggarwal, M. M.35; Ahammed, Z.53; Alekseev, I.19; Alford, J.22; Anson, C. D.32; Aparin, A.21; Arkhipkin, D.4
刊名PHYSICAL REVIEW LETTERS
出版日期2014-07-30
卷号113
ISSN号0031-9007
DOI10.1103/PhysRevLett.113.052302
文献子类Article
英文摘要Local parity-odd domains are theorized to form inside a quark-gluon plasma which has been produced in high-energy heavy-ion collisions. The local parity-odd domains manifest themselves as charge separation along the magnetic field axis via the chiral magnetic effect. The experimental observation of charge separation has previously been reported for heavy-ion collisions at the top RHIC energies. In this Letter, we present the results of the beam-energy dependence of the charge correlations in Au + Au collisions at midrapidity for center-of-mass energies of 7.7, 11.5, 19.6, 27, 39, and 62.4 GeV from the STAR experiment. After background subtraction, the signal gradually reduces with decreased beam energy and tends to vanish by 7.7 GeV. This implies the dominance of hadronic interactions over partonic ones at lower collision energies.
WOS关键词HEAVY-ION COLLISIONS ; PARITY VIOLATION ; HOT QCD
资助项目National Research Foundation[NRF-2012004024]
WOS研究方向Physics
语种英语
出版者AMER PHYSICAL SOC
WOS记录号WOS:000339969600004
源URL[http://119.78.100.186/handle/113462/49567]  
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.AGH Univ Sci & Technol, PL-30059 Krakow, Poland
2.Argonne Natl Lab, Argonne, IL 60439 USA
3.Univ Birmingham, Birmingham B15 2TT, W Midlands, England
4.Brookhaven Natl Lab, Upton, NY 11973 USA
5.Univ Calif Berkeley, Berkeley, CA 94720 USA
6.Univ Calif Davis, Davis, CA 95616 USA
7.Univ Calif Los Angeles, Los Angeles, CA 90095 USA
8.Univ Estadual Campinas, BR-13131 Sao Paulo, Brazil
9.Cent China Normal Univ HZNU, Wuhan 430079, Peoples R China
10.Univ Illinois, Chicago, IL 60607 USA
推荐引用方式
GB/T 7714
Adamczyk, L.,Adkins, J. K.,Agakishiev, G.,et al. Beam-Energy Dependence of Charge Separation along the Magnetic Field in Au plus Au Collisions at RHIC[J]. PHYSICAL REVIEW LETTERS,2014,113.
APA Adamczyk, L..,Adkins, J. K..,Agakishiev, G..,Aggarwal, M. M..,Ahammed, Z..,...&STAR Collaboration.(2014).Beam-Energy Dependence of Charge Separation along the Magnetic Field in Au plus Au Collisions at RHIC.PHYSICAL REVIEW LETTERS,113.
MLA Adamczyk, L.,et al."Beam-Energy Dependence of Charge Separation along the Magnetic Field in Au plus Au Collisions at RHIC".PHYSICAL REVIEW LETTERS 113(2014).

入库方式: OAI收割

来源:近代物理研究所

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