Observation and measurement of Higgs boson decays to WW* with the ATLAS detector
ATLAS Collaboration
刊名PHYSICAL REVIEW D
2015
卷号92期号:1页码:12006
学科分类Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.92.012006
文章类型Article
英文摘要We report the observation of Higgs boson decays to WW* based on an excess over background of 6.1 standard deviations in the dilepton final state, where the Standard Model expectation is 5.8 standard deviations. Evidence for the vector-boson fusion (VBF) production process is obtained with a significance of 3.2 standard deviations. The results are obtained from a data sample corresponding to an integrated luminosity of 25 fb(-1) from root s = 7 and 8 TeV pp collisions recorded by the ATLAS detector at the LHC. For a Higgs boson mass of 125.36 GeV, the ratio of the measured value to the expected value of the total production cross section times branching fraction is 1.09(-0.15)(+0.16)(stat)(-0.14)(+0.17)(syst). The corresponding ratios for the gluon fusion and vector-boson fusion production mechanisms are 1.02 +/- 0.19(stat)(-0.18)(+0.22)(syst) and 1.27(-0.40)(+0.44)(stat)(-0.21)(+0.30)(syst), respectively. At root s = 8 TeV, the total production cross sections are measured to be sigma(gg -> H -> WW*) = 4.6 +/- 0.9(stat)(-0.7)(+0.8)(syst) pb and sigma(VBF H -> WW*) = 0.51(-0.15)(+0.17)(stat)(-0.08)(+0.13)(syst) pb. The fiducial cross section is determined for the gluon-fusion process in exclusive final states with zero or one associated jet.
类目[WOS]Astronomy & Astrophysics ; Physics, Particles & Fields
收录类别SCI
WOS记录号WOS:000358022200001
引用统计
被引频次:20[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/311005/228580
专题中国科学院高能物理研究所_实验物理中心_期刊论文
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ATLAS Collaboration. Observation and measurement of Higgs boson decays to WW* with the ATLAS detector[J]. PHYSICAL REVIEW D,2015,92(1):12006.
APA ATLAS Collaboration.(2015).Observation and measurement of Higgs boson decays to WW* with the ATLAS detector.PHYSICAL REVIEW D,92(1),12006.
MLA ATLAS Collaboration."Observation and measurement of Higgs boson decays to WW* with the ATLAS detector".PHYSICAL REVIEW D 92.1(2015):12006.
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