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Combined search for the Standard Model Higgs boson using up to 4.9 fb(-1) of pp collision data at root s=7 TeV with the ATLAS detector at the LHC
ATLAS collaboration
2012
发表期刊PHYSICS LETTERS B
卷号710期号:1页码:49-66
通讯作者Aad, G (reprint author), Univ Freiburg, Fak Math & Phys, Hugstetter Str 55, D-79106 Freiburg, Germany.
摘要A combined search for the Standard Model Higgs boson with the ATLAS experiment at the LHC using datasets corresponding to integrated luminosities from 1.04 fb(-1) to 4.9 fb(-1) of pp collisions collected at root s = 7 TeV is presented. The Higgs boson mass ranges 112.9-115.5 GeV, 131-238 GeV and 251-466 GeV are excluded at the 95% confidence level (CL), while the range 124-519 GeV is expected to be excluded in the absence of a signal. An excess of events is observed around m(H) similar to 126 GeV with a local significance of 3.5 standard deviations (sigma). The local significances of H -> gamma, H -> ZZ(()*()) -> l(+)l(-)l'(+)l'(-) and H -> WW(*()) l(+)nu l'(-)(nu) over bar, the three most sensitive channels in this mass range, are 2.8 sigma, 2.1 sigma and 1.4 sigma. respectively. The global probability for the background to produce such a fluctuation anywhere in the explored Higgs boson mass range 110-600 GeV is estimated to be similar to 1.4% or, equivalently, 2.2 sigma. (C) 2012 CERN. Published by Elsevier B.V. All rights reserved.
关键词HADRON COLLIDERS QCD CORRECTIONS PARTON DISTRIBUTIONS MASSLESS PARTICLES BROKEN SYMMETRIES NNLO QCD DECAYS MASSES
学科领域Physics
DOI10.1016/j.physletb.2012.02.044
收录类别SCI
语种英语
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000302672500006
引用统计
被引频次:485[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/311005/213210
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. Combined search for the Standard Model Higgs boson using up to 4.9 fb(-1) of pp collision data at root s=7 TeV with the ATLAS detector at the LHC[J]. PHYSICS LETTERS B,2012,710(1):49-66.
APA ATLAS collaboration.(2012).Combined search for the Standard Model Higgs boson using up to 4.9 fb(-1) of pp collision data at root s=7 TeV with the ATLAS detector at the LHC.PHYSICS LETTERS B,710(1),49-66.
MLA ATLAS collaboration."Combined search for the Standard Model Higgs boson using up to 4.9 fb(-1) of pp collision data at root s=7 TeV with the ATLAS detector at the LHC".PHYSICS LETTERS B 710.1(2012):49-66.
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