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Observation of the Associated Production of a Single Top Quark - and a W Boson in pp Collisions at root s=8 TeV
CMS Collaboration
2014
发表期刊PHYSICAL REVIEW LETTERS
卷号112期号:23
通讯作者Chatrchyan, S (reprint author), Yerevan Phys Inst, Yerevan 375036, Armenia.
摘要The first observation of the associated production of a single top quark and a W boson is presented. The analysis is based on a data set corresponding to an integrated luminosity of 12.2 fb(-1) of proton-proton collisions at root s = 8 TeV recorded by the CMS experiment at the LHC. Events with two leptons and a jet originating from a b quark are selected. A multivariate analysis based on kinematic and topological properties is used to separate the signal from the dominant (tt) over bar background. An excess consistent with the signal hypothesis is observed, with a significance which corresponds to 6.1 standard deviations above a background-only hypothesis. The measured production cross section is 23.4 +/- 5.4 pb, in agreement with the standard model prediction.
关键词PRODUCTION CROSS-SECTION DETECTOR PHYSICS ATLAS LHC
学科领域Physics
DOI10.1103/PhysRevLett.112.231802
收录类别SCI
语种英语
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000336981200003
引用统计
被引频次:21[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/311005/213719
专题粒子天体物理中心
作者单位中国科学院高能物理研究所
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CMS Collaboration. Observation of the Associated Production of a Single Top Quark - and a W Boson in pp Collisions at root s=8 TeV[J]. PHYSICAL REVIEW LETTERS,2014,112(23).
APA CMS Collaboration.(2014).Observation of the Associated Production of a Single Top Quark - and a W Boson in pp Collisions at root s=8 TeV.PHYSICAL REVIEW LETTERS,112(23).
MLA CMS Collaboration."Observation of the Associated Production of a Single Top Quark - and a W Boson in pp Collisions at root s=8 TeV".PHYSICAL REVIEW LETTERS 112.23(2014).
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