Measurement of the W boson helicity in events with a single reconstructed top quark in p p collisions at root s=8 TeV

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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
刊名	JOURNAL OF HIGH ENERGY PHYSICS
	2015
卷号	2015 期号:1 页码:53
关键词	Electroweak interaction Hadron-Hadron Scattering
英文摘要	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).
学科主题	Physics
类目[WOS]	Physics, Particles & Fields
收录类别	SCI
WOS记录号	WOS:000347885000004
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/228149]
专题	高能物理研究所_粒子天体物理中心
推荐引用方式 GB/T 7714	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.