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Search for a Vectorlike Quark with Charge 2/3 in t plus Z Events from pp Collisions at root s 7 TeV
CMS Collaboration
2011
发表期刊PHYSICAL REVIEW LETTERS
卷号107期号:27
通讯作者Chatrchyan, S (reprint author), Yerevan Phys Inst, Yerevan 375036, Armenia.
摘要A search for pair-produced heavy vectorlike charge-2/3 quarks, T, in pp collisions at a center-of-mass energy of 7 TeV, is performed with the CMS detector at the LHC. Events consistent with the flavor-changing-neutral-current decay of a T quark to a top quark and a Z boson are selected by requiring two leptons from the Z-boson decay, as well as an additional isolated charged lepton. In a data sample corresponding to an integrated luminosity of 1.14 fb(-1), the number of observed events is found to be consistent with the standard model background prediction. Assuming a branching fraction of 100% for the decay T -> tZ, a T quark with a mass less than 475 GeV/c(2) is excluded at the 95% confidence level.
学科领域Physics
DOI10.1103/PhysRevLett.107.271802
收录类别SCI
语种英语
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000298611000010
引用统计
被引频次:73[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/311005/213159
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. Search for a Vectorlike Quark with Charge 2/3 in t plus Z Events from pp Collisions at root s 7 TeV[J]. PHYSICAL REVIEW LETTERS,2011,107(27).
APA CMS Collaboration.(2011).Search for a Vectorlike Quark with Charge 2/3 in t plus Z Events from pp Collisions at root s 7 TeV.PHYSICAL REVIEW LETTERS,107(27).
MLA CMS Collaboration."Search for a Vectorlike Quark with Charge 2/3 in t plus Z Events from pp Collisions at root s 7 TeV".PHYSICAL REVIEW LETTERS 107.27(2011).
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