Measurement of the forward-backward asymmetry of electron and muon pair-production in pp collisions at s = 7 TeV with the ATLAS detector

	Measurement of the forward-backward asymmetry of electron and muon pair-production in pp collisions at s = 7 TeV with the ATLAS detector
	ATLAS Collaboration
刊名	JOURNAL OF HIGH ENERGY PHYSICS
	2015
卷号	2015 期号:9 页码:49
关键词	Hadron-Hadron Scattering
英文摘要	This paper presents measurements from the ATLAS experiment of the forward-backward asymmetry in the reaction pp -> Z/gamma* -> l(+)l(-), with l being electrons or muons, and the extraction of the effective weak mixing angle. The results are based on the full set of data collected in 2011 in pp collisions at the LHC at root s = 7 TeV, corresponding to an integrated luminosity of 4.8 fb(-1). The measured asymmetry values are found to be in agreement with the corresponding Standard Model predictions. The combination of the muon and electron channels yields a value of the effective weak mixing angle of sin(2) theta(lept)(eff) = 0.2308 +/- 0.0005(stat.)+/- 0.0006(syst.)+/- 0.0009(PDF), where the first uncertainty corresponds to data statistics, the second to s ystematic effects and the third to knowledge of the parton density functions. This result agrees with the current world average from the Particle Data Group fit.
学科主题	Physics
类目[WOS]	Physics, Particles & Fields
收录类别	SCI
WOS记录号	WOS:000363537800001
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/228996]
专题	高能物理研究所_实验物理中心
推荐引用方式 GB/T 7714	ATLAS Collaboration. Measurement of the forward-backward asymmetry of electron and muon pair-production in pp collisions at s = 7 TeV with the ATLAS detector[J]. JOURNAL OF HIGH ENERGY PHYSICS,2015,2015(9):49.
APA	ATLAS Collaboration.(2015).Measurement of the forward-backward asymmetry of electron and muon pair-production in pp collisions at s = 7 TeV with the ATLAS detector.JOURNAL OF HIGH ENERGY PHYSICS,2015(9),49.
MLA	ATLAS Collaboration."Measurement of the forward-backward asymmetry of electron and muon pair-production in pp collisions at s = 7 TeV with the ATLAS detector".JOURNAL OF HIGH ENERGY PHYSICS 2015.9(2015):49.