Global polarization of Lambda and (Lambda)over-bar hyperons in Pb-Pb collisions at root s(NN)=2.76 and 5.02 TeV

doi:10.1103/PhysRevC.101.044611

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	Global polarization of Lambda and (Lambda)over-bar hyperons in Pb-Pb collisions at root s(NN)=2.76 and 5.02 TeV
	Acharya, S ; Adamova, D ; Adhya, SP ; Adler, A ; Adolfsson, J ; Aggarwal, MM ; Rinella, GA ; Agnello, M ; Agrawal, N ; Ahammed, Z
刊名	PHYSICAL REVIEW C
	2020
卷号	101 期号:4 页码:-
关键词	FLOW
ISSN号	2469-9985
DOI	10.1103/PhysRevC.101.044611
文献子类	期刊论文
英文摘要	The global polarization of the Lambda and (Lambda) over bar hyperons is measured for Pb-Pb collisions at root s(NN) = 2.76 and 5.02 TeV recorded with the ALICE at the Large Hadron Collider (LHC). The results are reported differentially as a function of collision centrality and hyperon's transverse momentum (pT) for the range of centrality 5-50%, 0.5 < pT < 5 GeV/c, and rapidity vertical bar y vertical bar < 0.5. The hyperon global polarization averaged for Pb-Pb collisions at root s(NN) = 2.76 and 5.02 TeV is found to be consistent with zero, < P-H > (%) approximate to 0.01 +/- 0.06 (stat.) +/- 0.03 (syst.) in the collision centrality range 15-50%, where the largest signal is expected. The results are compatible with expectations based on an extrapolation from measurements at lower collision energies at the Relativistic Heavy Ion Collider, hydrodynamical model calculations, and empirical estimates based on collision energy dependence of directed flow, all of which predict the global polarization values at LHC energies of the order of 0.01%.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/32894]
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.Natl Res Fdn, iThemba Labs, Somerset West, South Africa 2.Helsinki Inst Phys, Helsinki, Finland 3.Yerevan Phys Inst Fdn, AI Alikhanyan Natl Sci Lab, Yerevan, Armenia 4.Natl Acad Sci Ukraine, Bogolyubov Inst Theoret Phys, Kiev, Ukraine 5.Bose Inst, Dept Phys, Kolkata, India 6.CAPSS, Kolkata, India 7.Budker Inst Nucl Phys, Novosibirsk, Russia 8.Calif Polytech State Univ San Luis Obispo, San Luis Obispo, CA 93407 USA 9.Cent China Normal Univ, Wuhan, Peoples R China 10.IN2P3, Ctr Calcul, Lyon, France
推荐引用方式 GB/T 7714	Acharya, S,Adamova, D,Adhya, SP,et al. Global polarization of Lambda and (Lambda)over-bar hyperons in Pb-Pb collisions at root s(NN)=2.76 and 5.02 TeV[J]. PHYSICAL REVIEW C,2020,101(4):-.
APA	Acharya, S.,Adamova, D.,Adhya, SP.,Adler, A.,Adolfsson, J.,...&Zurlo, N.(2020).Global polarization of Lambda and (Lambda)over-bar hyperons in Pb-Pb collisions at root s(NN)=2.76 and 5.02 TeV.PHYSICAL REVIEW C,101(4),-.
MLA	Acharya, S,et al."Global polarization of Lambda and (Lambda)over-bar hyperons in Pb-Pb collisions at root s(NN)=2.76 and 5.02 TeV".PHYSICAL REVIEW C 101.4(2020):-.