Measurement of the Parity-Violating Longitudinal Single-Spin Asymmetry for W-+/- Boson Production in Polarized Proton-Proton Collisions at root s=500 GeV

doi:10.1103/PhysRevLett.106.062002

	Measurement of the Parity-Violating Longitudinal Single-Spin Asymmetry for W-+/- Boson Production in Polarized Proton-Proton Collisions at root s=500 GeV
	Aggarwal, M. M.1; Ahammed, Z.22; Alakhverdyants, A. V.18; Alekseev, I.16; Alford, J.19; Anderson, B. D.19; Anson, C. D.29; Arkhipkin, D.3; Averichev, G. S.18; Balewski, J.23
刊名	PHYSICAL REVIEW LETTERS
	2011-02-11
卷号	106 页码:6
ISSN号	0031-9007
DOI	10.1103/PhysRevLett.106.062002
英文摘要	We report the first measurement of the parity-violating single-spin asymmetries for midrapidity decay positrons and electrons from W+ and W- boson production in longitudinally polarized proton-proton collisions at root s = 500 GeV by the STAR experiment at RHIC. The measured asymmetries, A(L)(W+) = -0.27 +/- 0.10(stat.) +/- 0.02(syst.) +/- 0.03(norm.) and A(L)(W-) = 0.14 +/- 0.19(stat.) +/- 0.02(syst.) +/- 0.01(norm.), are consistent with theory predictions, which are large and of opposite sign. These predictions are based on polarized quark and antiquark distribution functions constrained by polarized deep-inelastic scattering measurements.
资助项目	RHIC Operations Group at BNL ; RCF at BNL ; NERSC Center at LBNL ; Open Science Grid consortium ; Offices of NP and HEP within the U.S. DOE Office of Science ; U.S. NSF ; Sloan Foundation ; DFG "Origin and Structure of the Universe" of Germany ; CNRS/IN2P3 ; FAPESP CNPq of Brazil ; Ministry of Ed. and Sci. of the Russian Federation ; NNSFC of China ; CAS of China ; MoST of China ; MoE of China ; GA of the Czech Republic ; MSMT of the Czech Republic ; FOM of the Netherlands ; NWO of the Netherlands ; DAE of India ; DST of India ; CSIR of India ; Polish Ministry of Sci. and Higher Ed. ; Korea Research Foundation ; Ministry of Sci., Ed. and Sports of the Rep. Of Croatia ; RosAtom of Russia
WOS关键词	ELECTROMAGNETIC CALORIMETER ; DISTRIBUTIONS ; PHYSICS
WOS研究方向	Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000287357100008
资助机构	RHIC Operations Group at BNL ; RCF at BNL ; NERSC Center at LBNL ; Open Science Grid consortium ; Offices of NP and HEP within the U.S. DOE Office of Science ; U.S. NSF ; Sloan Foundation ; DFG "Origin and Structure of the Universe" of Germany ; CNRS/IN2P3 ; FAPESP CNPq of Brazil ; Ministry of Ed. and Sci. of the Russian Federation ; NNSFC of China ; CAS of China ; MoST of China ; MoE of China ; GA of the Czech Republic ; MSMT of the Czech Republic ; FOM of the Netherlands ; NWO of the Netherlands ; DAE of India ; DST of India ; CSIR of India ; Polish Ministry of Sci. and Higher Ed. ; Korea Research Foundation ; Ministry of Sci., Ed. and Sports of the Rep. Of Croatia ; RosAtom of Russia
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/34635]
专题	中国科学院近代物理研究所
通讯作者	Aggarwal, M. M.
作者单位	1.Panjab Univ, Chandigarh 160014, India 2.Argonne Natl Lab, Argonne, IL 60439 USA 3.Brookhaven Natl Lab, Upton, NY 11973 USA 4.Univ Calif Berkeley, Berkeley, CA 94720 USA 5.Univ Calif Davis, Davis, CA 95616 USA 6.Univ Calif Los Angeles, Los Angeles, CA 90095 USA 7.Univ Estadual Campinas, Sao Paulo, Brazil 8.Univ Illinois, Chicago, IL 60607 USA 9.Creighton Univ, Omaha, NE 68178 USA 10.Czech Tech Univ, FNSPE, Prague 11519, Czech Republic
推荐引用方式 GB/T 7714	Aggarwal, M. M.,Ahammed, Z.,Alakhverdyants, A. V.,et al. Measurement of the Parity-Violating Longitudinal Single-Spin Asymmetry for W-+/- Boson Production in Polarized Proton-Proton Collisions at root s=500 GeV[J]. PHYSICAL REVIEW LETTERS,2011,106:6.
APA	Aggarwal, M. M..,Ahammed, Z..,Alakhverdyants, A. V..,Alekseev, I..,Alford, J..,...&Zoulkarneeva, Y..(2011).Measurement of the Parity-Violating Longitudinal Single-Spin Asymmetry for W-+/- Boson Production in Polarized Proton-Proton Collisions at root s=500 GeV.PHYSICAL REVIEW LETTERS,106,6.
MLA	Aggarwal, M. M.,et al."Measurement of the Parity-Violating Longitudinal Single-Spin Asymmetry for W-+/- Boson Production in Polarized Proton-Proton Collisions at root s=500 GeV".PHYSICAL REVIEW LETTERS 106(2011):6.