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Study of (W/Z)H production and Higgs boson couplings using H→ W W ∗ decays with the ATLAS detector
ATLAS Collaboration
2015
发表期刊JOURNAL OF HIGH ENERGY PHYSICS
卷号2015期号:8页码:137
文章类型Article
摘要A search for Higgs boson production in association with a W or Z boson, in the H -> WW* decay channel, is performed with a data sample collected with the ATLAS detector at the LHC in proton-proton collisions at centre-of-mass energies root s = 7 TeV and 8TeV, corresponding to integrated luminosities of 4.5 fb(-1) and 20.3 fb(-1), respectively. The W H production mode is studied in two-lepton and three-lepton final states, while twolepton and four-lepton final states are used to search for the ZH production mode. The observed significance, for the combined WH and ZH production, is 2.5 standard deviations while a significance of 0.9 standard deviations is expected in the Standard Model Higgs boson hypothesis. The ratio of the combined W H and Z H signal yield to the Standard Model expectation, mu(VH), is found to be mu(VH) = 3.0(-1.1)(+1.3)(stat.)(-0.7)(+1.0) (sys.) for the Higgs boson mass of 125.36 GeV. The WH and ZH production modes are also combined with the gluon fusion and vector boson fusion production modes studied in the H -> WW* -> l nu l nu decay channel, resulting in an overall observed significance of 6.5 standard deviations and mu F-gg+VBF+VH = 1.16(-0.15)(+0.16)(stat.)(-0.15)(+0.18)(sys.). The results are interpreted in terms of scaling factors of the Higgs boson couplings to vector bosons (kappa(V)) and fermions (kappa(F)); the combined results are: vertical bar kappa(V)vertical bar = 1.06(-0.10)(+0.10), vertical bar kappa(F)vertical bar = 0.85(-0.20)(+0.26)
关键词Hadron-Hadron Scattering Higgs physics
学科领域Physics
DOI10.1007/JHEP08(2015)137
收录类别SCI
WOS类目Physics, Particles & Fields
WOS记录号WOS:000363532000003
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被引频次:10[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/311005/229026
专题实验物理中心
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ATLAS Collaboration. Study of (W/Z)H production and Higgs boson couplings using H→ W W ∗ decays with the ATLAS detector[J]. JOURNAL OF HIGH ENERGY PHYSICS,2015,2015(8):137.
APA ATLAS Collaboration.(2015).Study of (W/Z)H production and Higgs boson couplings using H→ W W ∗ decays with the ATLAS detector.JOURNAL OF HIGH ENERGY PHYSICS,2015(8),137.
MLA ATLAS Collaboration."Study of (W/Z)H production and Higgs boson couplings using H→ W W ∗ decays with the ATLAS detector".JOURNAL OF HIGH ENERGY PHYSICS 2015.8(2015):137.
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