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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
2015
发表期刊JOURNAL OF HIGH ENERGY PHYSICS
卷号2015期号:9页码:49
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.
文章类型Article
关键词Hadron-Hadron Scattering
学科领域Physics
DOI10.1007/JHEP09(2015)049
收录类别SCI
WOS类目Physics, Particles & Fields
WOS记录号WOS:000363537800001
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被引频次:7[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/228996
专题实验物理中心
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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.
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