Global and local polarization of A hyperons in Au plus Au collisions at 200 GeV from STAR

doi:10.1016/j.nuclphysa.2018.08.034

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	Global and local polarization of A hyperons in Au plus Au collisions at 200 GeV from STAR
	Niida, T ; Adam, J ; Adamczyk, L ; Adams, JR ; Adkins, JK ; Agakishiev, G ; Aggarwal, MM ; Ahammed, Z ; Alekseev, I ; Anderson, DM
刊名	NUCLEAR PHYSICS A
	2019
卷号	982 期号:-页码:511—514
关键词	NUCLEAR COLLISIONS
ISSN号	0375-9474
DOI	10.1016/j.nuclphysa.2018.08.034
文献子类	期刊论文
英文摘要	New results on global polarization of A hyperons in Au+Au collisions at root s(NN) = 200 GeV reveal non-zero signal on the order of a few tenths of a percent. Compared with lower energy results, the current measurement shows that the polarization decreases at higher collision energy, the trend being well reproduced by theoretical calculations. The polarization is found to be larger in more peripheral collisions, as well as in the in-plane than in the out-of-plane direction. The signal seems to depend on the asymmetry between positive and negative charge in each event, which may indicate an influence of the axial current induced by the magnetic field. In addition, the first measurement of a local polarization along the beam direction was performed. The results show a quadrupole modulation relative to the second-order event plane, as expected from the elliptic flow.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/31650]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
作者单位	1.Fudan Univ, Shanghai 200433, Peoples R China; 2.Wayne State Univ, 666 W Hancock, Detroit, MI 48201 USA; 3.Abilene Christian Univ, Abilene, TX 79699 USA; 4.AGH Univ Sci & Technol, FPACS, PL-30059 Krakow, Poland; 5.Alikhanov Inst Theoret & Expt Phys, Moscow 117218, Russia; 6.Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA; 7.Brookhaven Natl Lab, Upton, NY 11973 USA; 8.Univ Calif Berkeley, Berkeley, CA 94720 USA; 9.Univ Calif Davis, Davis, CA 95616 USA; 10.Univ Calif Los Angeles, Los Angeles, CA 90095 USA;
推荐引用方式 GB/T 7714	Niida, T,Adam, J,Adamczyk, L,et al. Global and local polarization of A hyperons in Au plus Au collisions at 200 GeV from STAR[J]. NUCLEAR PHYSICS A,2019,982(-):511—514.
APA	Niida, T.,Adam, J.,Adamczyk, L.,Adams, JR.,Adkins, JK.,...&Zyzak, M.(2019).Global and local polarization of A hyperons in Au plus Au collisions at 200 GeV from STAR.NUCLEAR PHYSICS A,982(-),511—514.
MLA	Niida, T,et al."Global and local polarization of A hyperons in Au plus Au collisions at 200 GeV from STAR".NUCLEAR PHYSICS A 982.-(2019):511—514.