Observation of charge-dependent azimuthal correlations and possible local strong parity violation in heavy-ion collisions

doi:10.1103/PhysRevC.81.054908

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	Observation of charge-dependent azimuthal correlations and possible local strong parity violation in heavy-ion collisions
	Grube, B.51; Huang, H. Z.24; Hollis, R. S.18; Hofman, D. J.18; Hoffmann, G. W.7; Hoffman, A. M.38; Hirsch, A.50; Hjort, E.37; Zuo, J. X.4; Zoulkarneeva, Y.33
刊名	PHYSICAL REVIEW C
	2010-05-01
卷号	81 期号:5 页码:15
ISSN号	0556-2813
DOI	10.1103/PhysRevC.81.054908
英文摘要	Parity (P)-odd domains, corresponding to nontrivial topological solutions of the QCD vacuum, might be created during relativistic heavy-ion collisions. These domains are predicted to lead to charge separation of quarks along the orbital momentum of the system created in noncentral collisions. To study this effect, we investigate a three-particle mixed-harmonics azimuthal correlator which is a P-even observable, but directly sensitive to the charge-separation effect. We report measurements of this observable using the STAR detector in Au + Au and Cu + Cu collisions at root s(NN) = 200 and 62 GeV. The results are presented as a function of collision centrality, particle separation in rapidity, and particle transverse momentum. A signal consistent with several of the theoretical expectations is detected in all four data sets. We compare our results to the predictions of existing event generators and discuss in detail possible contributions from other effects that are not related to P violation.
资助项目	RHIC Operations Group and RCF at BNL ; NERSC Center at LBNL ; US DOE Office of Science ; US NSF ; Sloan Foundation ; DFG
WOS关键词	RELATIVISTIC NUCLEAR COLLISIONS ; TIME PROJECTION CHAMBER ; QUARK-GLUON PLASMA ; ELLIPTIC FLOW ; HOT QCD ; STAR ; COLLABORATION ; PERSPECTIVE ; MATTER ; VACUUM
WOS研究方向	Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000278144800051
资助机构	RHIC Operations Group and RCF at BNL ; NERSC Center at LBNL ; US DOE Office of Science ; US NSF ; Sloan Foundation ; DFG
公开日期	2011-04-20
内容类型	期刊论文
源URL	[http://ir.imp.cas.cn/handle/113462/7883]
专题	近代物理研究所_近代物理研究所知识存储（2010之前）
通讯作者	Abelev, B. I.
作者单位	1.Rice Univ, Houston, TX 77251 USA 2.Univ Sci & Technol China, Hefei 230026, Peoples R China 3.Shandong Univ, Jinan 250100, Shandong, Peoples R China 4.Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China 5.SUBATECH, Nantes, France 6.Texas A&M Univ, College Stn, TX 77843 USA 7.Univ Texas Austin, Austin, TX 78712 USA 8.Tsinghua Univ, Beijing 100084, Peoples R China 9.Univ Zagreb, HR-10002 Zagreb, Croatia 10.Yale Univ, New Haven, CT 06520 USA
推荐引用方式 GB/T 7714	Grube, B.,Huang, H. Z.,Hollis, R. S.,et al. Observation of charge-dependent azimuthal correlations and possible local strong parity violation in heavy-ion collisions[J]. PHYSICAL REVIEW C,2010,81(5):15.
APA	Grube, B..,Huang, H. Z..,Hollis, R. S..,Hofman, D. J..,Hoffmann, G. W..,...&Humanic, T. J..(2010).Observation of charge-dependent azimuthal correlations and possible local strong parity violation in heavy-ion collisions.PHYSICAL REVIEW C,81(5),15.
MLA	Grube, B.,et al."Observation of charge-dependent azimuthal correlations and possible local strong parity violation in heavy-ion collisions".PHYSICAL REVIEW C 81.5(2010):15.