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A search for t (t)over-bar resonances with the ATLAS detector in 2.05 fb(-1) of proton-proton collisions at root s=7 TeV
ATLAS collaboration
2012
发表期刊EUROPEAN PHYSICAL JOURNAL C
卷号72期号:7
通讯作者Aad, G (reprint author), Univ Freiburg, Fak Math & Phys, Hugstetter Str 55, D-79106 Freiburg, Germany.
摘要A search for top quark pair resonances in final states containing at least one electron or muon has been performed with the ATLAS experiment at the CERN Large Hadron Collider. The search uses a data sample corresponding to an integrated luminosity of 2.05 fb(-1), which was recorded in 2011 at a proton-proton centre-of-mass energy of 7 TeV. No evidence for a resonance is found and limits are set on the production cross-section times branching ratio to t (t) over bar for narrow and wide resonances. For narrow Z' bosons, the observed 95 % Bayesian credibility level limits range from 9.3 pb to 0.95 pb for masses in the range of m(Z') = 500 GeV to m(Z') = 1300 GeV. The corresponding excluded mass region for a leptophobic topcolour Z' boson (Kaluza-Klein gluon excitation in the Randall-Sundrum model) is m(Z') < 880 GeV (m(gKK) < 1130 GeV).
关键词PRODUCTION CROSS-SECTION P(P)OVER-BAR COLLISIONS PARTON DISTRIBUTIONS PP COLLISIONS T(T)OVER-BAR JETS LHC
学科领域Physics
DOI10.1140/epjc/s10052-012-2083-1
收录类别SCI
语种英语
WOS类目Physics, Particles & Fields
WOS记录号WOS:000307269400029
引用统计
被引频次:7[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/311005/213306
专题实验物理中心
作者单位中国科学院高能物理研究所
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ATLAS collaboration. A search for t (t)over-bar resonances with the ATLAS detector in 2.05 fb(-1) of proton-proton collisions at root s=7 TeV[J]. EUROPEAN PHYSICAL JOURNAL C,2012,72(7).
APA ATLAS collaboration.(2012).A search for t (t)over-bar resonances with the ATLAS detector in 2.05 fb(-1) of proton-proton collisions at root s=7 TeV.EUROPEAN PHYSICAL JOURNAL C,72(7).
MLA ATLAS collaboration."A search for t (t)over-bar resonances with the ATLAS detector in 2.05 fb(-1) of proton-proton collisions at root s=7 TeV".EUROPEAN PHYSICAL JOURNAL C 72.7(2012).
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