Global Polarization of Xi and Omega Hyperons in Au plus Au Collisions at root S-NN=200 GeV

doi:10.1103/PhysRevLett.126.162301

	Global Polarization of Xi and Omega Hyperons in Au plus Au Collisions at root S-NN=200 GeV
	Adam, J.7; Adamczyk, L.3; Adams, J. R.40; Adkins, J. K.31; Agakishiev, G.29; Aggarwal, M. M.42; Ahammed, Z.61; Alekseev, I 4,36; Anderson, D. M.55; Aparin, A.29
刊名	PHYSICAL REVIEW LETTERS
	2021-04-22
卷号	126 期号:16 页码:8
ISSN号	0031-9007
DOI	10.1103/PhysRevLett.126.162301
通讯作者	Adam, J.()
英文摘要	Global polarization of Xi and Omega hyperons has been measured for the first time in Au + Au collisions at root S-NN= 200 GeV. The measurements of the Xi(-) and (Xi) over bar (+) hyperon polarization have been performed by two independent methods, via analysis of the angular distribution of the daughter particles in the parity violating weak decay Xi -> Lambda + pi, as well as by measuring the polarization of the daughter A hyperon, polarized via polarization transfer from its parent. The polarization, obtained by combining the results from the two methods and averaged over Xi(-) and (Xi) over bar (+), is measured to be < P-Xi > = 0.47 +/- 0.10(stat) +/- 0.23(syst)% for the collision centrality 20%-80%. The < P-Xi > is found to be slightly larger than the inclusive Lambda polarization and in reasonable agreement with a multiphase transport model. The < P-Xi > is found to follow the centrality dependence of the vorticity predicted in the model, increasing toward more peripheral collisions. The global polarization of Omega, < P-Omega > = 1.11 +/- 0.87(stat) +/- 1.97(syst)% was obtained by measuring the polarization of daughter Lambda in the decay Omega -> Lambda + K, assuming the polarization transfer factor C-Omega Lambda = 1.
资助项目	RHIC Operations Group at BNL ; RCF at BNL ; NERSC Center at LBNL ; Open Science Grid consortium ; Office of Nuclear Physics within the U.S. DOE Office of Science ; U.S. National Science Foundation ; Ministry of Education and Science of the Russian Federation ; National Natural Science Foundation of China ; Chinese Academy of Science ; Ministry of Science and Technology of China ; Chinese Ministry of Education ; Higher Education Sprout Project by Ministry of Education at NCKU ; National Research Foundation of Korea ; Czech Science Foundation ; Ministry of Education, Youth and Sports of the Czech Republic ; Hungarian National Research, Development and Innovation Office ; New National Excellency Programme of the Hungarian Ministry of Human Capacities ; Department of Atomic Energy of India ; Department of Science and Technology of the Government of India ; National Science Centre of Poland ; Ministry of Science, Education and Sports of the Republic of Croatia ; RosAtom of Russia ; German Bundesministerium fur Bildung, Wissenschaft, Forschung and Technologie (BMBF) ; Helmholtz Association ; Ministry of Education, Culture, Sports, Science, and Technology (MEXT) ; Japan Society for the Promotion of Science (JSPS)
WOS研究方向	Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000652829600008
资助机构	RHIC Operations Group at BNL ; RCF at BNL ; NERSC Center at LBNL ; Open Science Grid consortium ; Office of Nuclear Physics within the U.S. DOE Office of Science ; U.S. National Science Foundation ; Ministry of Education and Science of the Russian Federation ; National Natural Science Foundation of China ; Chinese Academy of Science ; Ministry of Science and Technology of China ; Chinese Ministry of Education ; Higher Education Sprout Project by Ministry of Education at NCKU ; National Research Foundation of Korea ; Czech Science Foundation ; Ministry of Education, Youth and Sports of the Czech Republic ; Hungarian National Research, Development and Innovation Office ; New National Excellency Programme of the Hungarian Ministry of Human Capacities ; Department of Atomic Energy of India ; Department of Science and Technology of the Government of India ; National Science Centre of Poland ; Ministry of Science, Education and Sports of the Republic of Croatia ; RosAtom of Russia ; German Bundesministerium fur Bildung, Wissenschaft, Forschung and Technologie (BMBF) ; Helmholtz Association ; Ministry of Education, Culture, Sports, Science, and Technology (MEXT) ; Japan Society for the Promotion of Science (JSPS)
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/137172]
专题	中国科学院近代物理研究所
通讯作者	Adam, J.
作者单位	1.Shandong Univ, Qingdao 266237, Shandong, Peoples R China 2.Abilene Christian Univ, Abilene, TX 79699 USA 3.AGH Univ Sci & Technol, FPACS, PL-30059 Krakow, Poland 4.NRC Kurchatov Inst, Alikhanov Inst Theoret & Expt Phys, Moscow 117218, Russia 5.Argonne Natl Lab, Argonne, IL 60439 USA 6.Amer Univ Cairo, New Cairo 11835, Egypt 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	Adam, J.,Adamczyk, L.,Adams, J. R.,et al. Global Polarization of Xi and Omega Hyperons in Au plus Au Collisions at root S-NN=200 GeV[J]. PHYSICAL REVIEW LETTERS,2021,126(16):8.
APA	Adam, J..,Adamczyk, L..,Adams, J. R..,Adkins, J. K..,Agakishiev, G..,...&Zyzak, M..(2021).Global Polarization of Xi and Omega Hyperons in Au plus Au Collisions at root S-NN=200 GeV.PHYSICAL REVIEW LETTERS,126(16),8.
MLA	Adam, J.,et al."Global Polarization of Xi and Omega Hyperons in Au plus Au Collisions at root S-NN=200 GeV".PHYSICAL REVIEW LETTERS 126.16(2021):8.