Single spin asymmetry AN in polarized proton-proton elastic scattering at root s=200 GeV

doi:10.1016/j.physletb.2013.01.014

	Single spin asymmetry AN in polarized proton-proton elastic scattering at root s=200 GeV
	Adamczyk, L.2; Agakishiev, G.21; Aggarwal, M. M.34; Ahammed, Z.53; Alakhverdyants, A. V.21; Alekseev, I.19; Alford, J.22; Anson, C. D.31; Arkhipkin, D.1; Aschenauer, E.1
刊名	PHYSICS LETTERS B
	2013-02-12
卷号	719 页码:62-69
关键词	Polarization Elastic Scattering
ISSN号	0370-2693
DOI	10.1016/j.physletb.2013.01.014
文献子类	Article
英文摘要	We report a high precision measurement of the transverse single spin asymmetry A(N) at the center of mass energy root s = 200 GeV in elastic proton-proton scattering by the STAR experiment at RHIC. The A(N) was measured in the four-momentum transfer squared t range 0.003 <= vertical bar t vertical bar <= 0.035 (GeV/c)(2), the region of a significant interference between the electromagnetic and hadronic scattering amplitudes. The measured values of A(N) and its t-dependence are consistent with a vanishing hadronic spin-flip amplitude, thus providing strong constraints on the ratio of the single spin-flip to the non-flip amplitudes. Since the hadronic amplitude is dominated by the Pomeron amplitude at this root s, we conclude that this measurement addresses the question about the presence of a hadronic spin flip due to the Pomeron exchange in polarized proton-proton elastic scattering. (c) 2013 Elsevier B.V. All rights reserved.
资助项目	National Research Foundation[NRF-2012004024]
WOS关键词	1ST MEASUREMENT ; IMPACT-PICTURE ; PP ; INTERFERENCE ; POMERON ; REGION ; ENERGY ; BEAM ; A(N)
WOS研究方向	Astronomy & Astrophysics ; Physics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000315065600008
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/48035]
专题	中国科学院近代物理研究所
通讯作者	Yip, K.
作者单位	1.Brookhaven Natl Lab, Upton, NY 11973 USA 2.AGH Univ Sci & Technol, Krakow, Poland 3.Argonne Natl Lab, Argonne, IL 60439 USA 4.Univ Birmingham, Birmingham, W Midlands, England 5.Univ Calif Berkeley, Berkeley, CA 94720 USA 6.Univ Calif Davis, Davis, CA 95616 USA 7.Univ Calif Los Angeles, Los Angeles, CA 90095 USA 8.Univ Estadual Campinas, Sao Paulo, Brazil 9.Cent China Normal Univ HZNU, Wuhan 430079, Peoples R China 10.Univ Illinois, Chicago, IL 60607 USA
推荐引用方式 GB/T 7714	Adamczyk, L.,Agakishiev, G.,Aggarwal, M. M.,et al. Single spin asymmetry AN in polarized proton-proton elastic scattering at root s=200 GeV[J]. PHYSICS LETTERS B,2013,719:62-69.
APA	Adamczyk, L..,Agakishiev, G..,Aggarwal, M. M..,Ahammed, Z..,Alakhverdyants, A. V..,...&STAR Collaboration.(2013).Single spin asymmetry AN in polarized proton-proton elastic scattering at root s=200 GeV.PHYSICS LETTERS B,719,62-69.
MLA	Adamczyk, L.,et al."Single spin asymmetry AN in polarized proton-proton elastic scattering at root s=200 GeV".PHYSICS LETTERS B 719(2013):62-69.