Measurement of inclusive J/psi polarization in p plus p collisions at root s=200 GeV by the STAR experiment

doi:10.1103/PhysRevD.102.092009

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	Measurement of inclusive J/psi polarization in p plus p collisions at root s=200 GeV by the STAR experiment
	Adam, J ; Adamczyk, L ; Adams, JR ; Adkins, JK ; Agakishiev, G ; Aggarwal, MM ; Ahammed, Z ; Alekseev, I ; Anderson, DM ; Aparin, A
刊名	PHYSICAL REVIEW D
	2020
卷号	102 期号:9 页码:-
关键词	PRODUCTION CROSS-SECTION ANGULAR-DISTRIBUTION HADROPRODUCTION MULTIPLICITY
ISSN号	2470-0010
DOI	10.1103/PhysRevD.102.092009
文献子类	期刊论文
英文摘要	We report on new measurements of inclusive J/psi polarization at midrapidity in p + p collisions at root s = 200 GeV by the STAR experiment at the Relativistic Heavy Ion Collider. The polarization parameters, lambda(theta), lambda(phi), and lambda(theta phi), are measured as a function of transverse momentum (p(T)) in both the helicity and Collins-Soper (CS) reference frames within p(T) < 10 GeV/c. Except for lambda(0) in the CS frame at the highest measured p(T), all three polarization parameters are consistent with 0 in both reference frames without any strong p(T) dependence. Several model calculations are compared with data, and the one using the Color Glass Condensate effective field theory coupled with nonrelativistic QCD gives the best overall description of the experimental results, even though other models cannot be ruled out due to experimental uncertainties.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/32994]
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.Indian Inst Technol, Patna 801106, Bihar, India 2.Indiana Univ, Bloomington, IN 47408 USA 3.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China 4.Univ Jammu, Jammu 180001, India 5.Joint Inst Nucl Res, Dubna 141980, Russia 6.Kent State Univ, Kent, OH 44242 USA 7.Univ Kentucky, Lexington, KY 40506 USA (3 8.Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA 9.Lehigh Univ, Bethlehem, PA 18015 USA 10.Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany
推荐引用方式 GB/T 7714	Adam, J,Adamczyk, L,Adams, JR,et al. Measurement of inclusive J/psi polarization in p plus p collisions at root s=200 GeV by the STAR experiment[J]. PHYSICAL REVIEW D,2020,102(9):-.
APA	Adam, J.,Adamczyk, L.,Adams, JR.,Adkins, JK.,Agakishiev, G.,...&Zyzak, M.(2020).Measurement of inclusive J/psi polarization in p plus p collisions at root s=200 GeV by the STAR experiment.PHYSICAL REVIEW D,102(9),-.
MLA	Adam, J,et al."Measurement of inclusive J/psi polarization in p plus p collisions at root s=200 GeV by the STAR experiment".PHYSICAL REVIEW D 102.9(2020):-.