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Search for pair produced fourth-generation up-type quarks in pp collisions at root s=7 TeV with a lepton in the final state
CMS Collaboration
2012
发表期刊PHYSICS LETTERS B
卷号718期号:2页码:307-328
通讯作者Chatrchyan, S (reprint author), CERN, CH-1211 Geneva 23, Switzerland.
摘要The results of a search for the pair production of a fourth-generation up-type quark (t') in proton-proton collisions at root s = 7 TeV are presented, using data corresponding to an integrated luminosity of about 5.0 fb(-1) collected by the Compact Muon Solenoid experiment at the LHC. The t' quark is assumed to decay exclusively to a W boson and a b quark. Events with a single isolated electron or muon, missing transverse momentum, and at least four hadronic jets, of which at least one must be identified as a b jet, are selected. No significant excess of events over standard model expectations is observed. Upper limits for the t'(t) over bar' production cross section at 95% confidence level are set as a function of t' mass, and t'-quark production for masses below 570 GeV is excluded. The search is equally sensitive to nonchiral heavy quarks decaying to Wb. In this case, the results can be interpreted as upper limits on the production cross section times the branching fraction to Wb. (C) 2012 CERN. Published by Elsevier B.V. All rights reserved.
关键词WEAK-INTERACTIONS MODEL HIGGS BOSON HEAVY LHC
学科领域Physics
DOI10.1016/j.physletb.2012.10.038
收录类别SCI
语种英语
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000312687700011
引用统计
被引频次:38[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/311005/213408
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 pair produced fourth-generation up-type quarks in pp collisions at root s=7 TeV with a lepton in the final state[J]. PHYSICS LETTERS B,2012,718(2):307-328.
APA CMS Collaboration.(2012).Search for pair produced fourth-generation up-type quarks in pp collisions at root s=7 TeV with a lepton in the final state.PHYSICS LETTERS B,718(2),307-328.
MLA CMS Collaboration."Search for pair produced fourth-generation up-type quarks in pp collisions at root s=7 TeV with a lepton in the final state".PHYSICS LETTERS B 718.2(2012):307-328.
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