Measurement of the single-top-quark t-channel cross section in pp collisions at root s=7 TeV

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	Measurement of the single-top-quark t-channel cross section in pp collisions at root s=7 TeV
	CMS Collaboration
刊名	JOURNAL OF HIGH ENERGY PHYSICS
	2012
期号	12
关键词	ATLAS DETECTOR
通讯作者	Chatrchyan, S (reprint author), Yerevan Phys Inst, Yerevan 375036, Armenia.
英文摘要	A measurement of the single-top-quark t-channel production cross section in pp collisions at root s = 7TeV with the CMS detector at the LHC is presented. Two different and complementary approaches have been followed. The first approach exploits the distributions of the pseudorapidity of the recoil jet and reconstructed top-quark mass using background estimates determined from control samples in data. The second approach is based on multivariate analysis techniques that probe the compatibility of the candidate events with the signal. Data have been collected for the muon and electron final states, corresponding to integrated luminosities of 1.17 and 1.56 fb(-1), respectively. The single-top-quark production cross section in the t-channel is measured to be 67.2 +/- 6.1 pb, in agreement with the approximate next-to-next-to-leading-order standard model prediction. Using the standard model electroweak couplings, the CKM matrix element vertical bar V-tb vertical bar is measured to be 1.020 +/- 0.046 (meas.) +/- 0.017 (theor.).
学科主题	Physics
类目[WOS]	Physics, Particles & Fields
收录类别	SCI
语种	英语
WOS记录号	WOS:000313123800035
公开日期	2016-02-25
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/213423]
专题	高能物理研究所_粒子天体物理中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	CMS Collaboration. Measurement of the single-top-quark t-channel cross section in pp collisions at root s=7 TeV[J]. JOURNAL OF HIGH ENERGY PHYSICS,2012(12).
APA	CMS Collaboration.(2012).Measurement of the single-top-quark t-channel cross section in pp collisions at root s=7 TeV.JOURNAL OF HIGH ENERGY PHYSICS(12).
MLA	CMS Collaboration."Measurement of the single-top-quark t-channel cross section in pp collisions at root s=7 TeV".JOURNAL OF HIGH ENERGY PHYSICS .12(2012).