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Measurement of the charge asymmetry in top quark pair production in pp collisions at root s=7 TeV using the ATLAS detector
ATLAS collaboration
2012
发表期刊EUROPEAN PHYSICAL JOURNAL C
卷号72期号:6
通讯作者Aad, G (reprint author), Univ Freiburg, Fak Math & Phys, Hugstetter Str 55, D-79106 Freiburg, Germany.
摘要A measurement of the top-antitop production charge asymmetry A(C) is presented using data corresponding to an integrated luminosity of 1.04 fb(-1) of pp collisions at root s = 7 TeV collected by the ATLAS detector at the LHC. Events are selected with a single lepton (electron or muon), missing transverse momentum and at least four jets of which at least one jet is identified as coming from a b-quark. A kinematic fit is used to reconstruct the t (t) over bar event topology. After background subtraction, a Bayesian unfolding procedure is performed to correct for acceptance and detector effects. The measured value of A(C) is A(C) =-0.019+/-0.028 (stat.)+/-0.024 (syst.), consistent with the prediction from the MC@NLO Monte Carlo generator of A(C) = 0.006+/-0.002. Measurements of AC in two ranges of invariant mass of the top-antitop pair are also shown.
关键词PARTON DISTRIBUTIONS LHC
学科领域Physics
DOI10.1140/epjc/s10052-012-2039-5
收录类别SCI
语种英语
WOS类目Physics, Particles & Fields
WOS记录号WOS:000306059600018
引用统计
被引频次:59[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/311005/213274
专题实验物理中心
作者单位中国科学院高能物理研究所
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ATLAS collaboration. Measurement of the charge asymmetry in top quark pair production in pp collisions at root s=7 TeV using the ATLAS detector[J]. EUROPEAN PHYSICAL JOURNAL C,2012,72(6).
APA ATLAS collaboration.(2012).Measurement of the charge asymmetry in top quark pair production in pp collisions at root s=7 TeV using the ATLAS detector.EUROPEAN PHYSICAL JOURNAL C,72(6).
MLA ATLAS collaboration."Measurement of the charge asymmetry in top quark pair production in pp collisions at root s=7 TeV using the ATLAS detector".EUROPEAN PHYSICAL JOURNAL C 72.6(2012).
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