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Measurements of the Higgs boson production and decay rates and constraints on its couplings from a combined ATLAS and CMS analysis of the LHC pp collision data at root s=7 and 8 TeV
ATLAS Collaboration
2016
发表期刊JOURNAL OF HIGH ENERGY PHYSICS
卷号2016期号:8页码:45
文章类型Article
摘要Combined ATLAS and CMS measurements of the Higgs boson production and decay rates, as well as constraints on its couplings to vector bosons and fermions, are presented. The combination is based on the analysis of five production processes, namely gluon fusion, vector boson fusion, and associated production with a W or a Z boson or a pair of top quarks, and of the six decay modes H -> ZZ, W W , gamma gamma, tau tau, bb, and mu mu. All results are reported assuming a value of 125.09 GeV for the Higgs boson mass, the result of the combined measurement by the ATLAS and CMS experiments. The analysis uses the CERN LHC proton-proton collision data recorded by the ATLAS and CMS experiments in 2011 and 2012, corresponding to integrated luminosities per experiment of approximately 5 fb(-1) at root s = 7 TeV and 20 fb(-1) at root s = 8 TeV. The Higgs boson production and decay rates measured by the two experiments are combined within the context of three generic parameterisations: two based on cross sections and branching fractions, and one on ratios of coupling modifiers. Several interpretations of the measurements with more model-dependent parameterisations are also given. The combined signal yield relative to the Standard Model prediction is measured to be 1.09 +/- 0.11. The combined measurements lead to observed significances for the vector boson fusion production process and for the H -> tau tau decay of 5.4 and 5.5 standard deviations, respectively. The data are consistent with the Standard Model predictions for all parameterisations considered.
关键词Hadron-Hadron scattering (experiments) Higgs physics
DOI10.1007/jhep08(2016)045
关键词[WOS]HADRON COLLIDERS ; QCD CORRECTIONS ; STANDARD MODEL ; NNLO QCD ; TRANSVERSE-MOMENTUM ; MASSLESS PARTICLES ; BROKEN SYMMETRIES ; GAUGE-FIELDS ; NLO
语种英语
WOS记录号WOS:000382291800001
引用统计
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/260908
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. Measurements of the Higgs boson production and decay rates and constraints on its couplings from a combined ATLAS and CMS analysis of the LHC pp collision data at root s=7 and 8 TeV[J]. JOURNAL OF HIGH ENERGY PHYSICS,2016,2016(8):45.
APA ATLAS Collaboration.(2016).Measurements of the Higgs boson production and decay rates and constraints on its couplings from a combined ATLAS and CMS analysis of the LHC pp collision data at root s=7 and 8 TeV.JOURNAL OF HIGH ENERGY PHYSICS,2016(8),45.
MLA ATLAS Collaboration."Measurements of the Higgs boson production and decay rates and constraints on its couplings from a combined ATLAS and CMS analysis of the LHC pp collision data at root s=7 and 8 TeV".JOURNAL OF HIGH ENERGY PHYSICS 2016.8(2016):45.
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