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Measurement of the W boson helicity in events with a single reconstructed top quark in p p collisions at root s=8 TeV
CMS Collaboration
2015
发表期刊JOURNAL OF HIGH ENERGY PHYSICS
卷号2015期号:1页码:53
摘要A measurement of the W boson helicity is presented, where the W boson originates from the decay of a top quark produced in pp collisions. The event selection, optimized for reconstructing a single top quark in the final state, requires exactly one isolated lepton (muon or electron) and exactly two jets, one of which is likely to originate from the hadronization of a bottom quark. The analysis is performed using data recorded at a center-of-mass energy of 8 TeV with the CMS detector at the CERN LHC in 2012. The data sample corresponds to an integrated luminosity of 19.7 fb(-1). The measured helicity fractions are F-L = 0.298 +/- 0.028 (stat) +/- 0.032(syst), F-0 = 0.720 +/- 0.039 (stat) +/- 0.037(syst), and F-R = -0.018 +/- 0.019 (stat) +/- 0.011(syst). These results are used to set limits on the real part of the tWb anomalous couplings, g(L) and g(R).
文章类型Article
关键词Electroweak interaction Hadron-Hadron Scattering
学科领域Physics
DOI10.1007/JHEP01(2015)053
收录类别SCI
WOS类目Physics, Particles & Fields
WOS记录号WOS:000347885000004
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被引频次:15[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/311005/228149
专题粒子天体物理中心
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CMS Collaboration. Measurement of the W boson helicity in events with a single reconstructed top quark in p p collisions at root s=8 TeV[J]. JOURNAL OF HIGH ENERGY PHYSICS,2015,2015(1):53.
APA CMS Collaboration.(2015).Measurement of the W boson helicity in events with a single reconstructed top quark in p p collisions at root s=8 TeV.JOURNAL OF HIGH ENERGY PHYSICS,2015(1),53.
MLA CMS Collaboration."Measurement of the W boson helicity in events with a single reconstructed top quark in p p collisions at root s=8 TeV".JOURNAL OF HIGH ENERGY PHYSICS 2015.1(2015):53.
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