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Constraints on new phenomena via Higgs boson couplings and invisible decays with the ATLAS detector
ATLAS Collaboration
2015
发表期刊JOURNAL OF HIGH ENERGY PHYSICS
卷号2015期号:11页码:206
文章类型Article
摘要The ATLAS experiment at the LHC has measured the Higgs boson couplings and mass, and searched for invisible Higgs boson decays, using multiple production and decay channels with up to 4.7 fb(-1) of pp collision data at root S = 7 TeV and 20.3 fb(-1) at root s = 8 TeV. In the current study, the measured production and decay rates of the observed Higgs boson in the gamma gamma, ZZ, WW, Z gamma, bb, tau tau, and mu mu decay channels, along with results from the associated production of a Higgs boson with a top-quark pair, are used to probe the scaling of the couplings with mass. Limits are set on parameters in extensions of the Standard Model including a composite Higgs boson, an additional electroweak singlet, and two-Higgs-doublet models. Together with the measured mass of the scalar Higgs boson in the gamma gamma and ZZ decay modes, a lower limit is set on the pseudoscalar Higgs boson mass of m(A) > 370 GeV in the "hMSSM" simplified Minimal Supersymmetric Standard Model. Results from direct searches for heavy Higgs bosons are also interpreted in the hMSSM. Direct searches for invisible Higgs boson decays in the vector-boson fusion and associated production of a Higgs boson with W/Z (Z -> ll, W/Z -> jj) modes are statistically combined to set an upper limit on the Higgs boson invisible branching ratio of 0.25. The use of the measured visible decay rates in a more general coupling fit improves the upper limit to 0.23, constraining a Higgs portal model of dark matter.
关键词Supersymmetry Hadron-Hadron Scattering Higgs physics Dark matter
学科领域Physics
DOI10.1007/JHEP11(2015)206
收录类别SCI
WOS类目Physics, Particles & Fields
WOS记录号WOS:000366625100001
引用统计
被引频次:103[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/311005/229079
专题实验物理中心
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ATLAS Collaboration. Constraints on new phenomena via Higgs boson couplings and invisible decays with the ATLAS detector[J]. JOURNAL OF HIGH ENERGY PHYSICS,2015,2015(11):206.
APA ATLAS Collaboration.(2015).Constraints on new phenomena via Higgs boson couplings and invisible decays with the ATLAS detector.JOURNAL OF HIGH ENERGY PHYSICS,2015(11),206.
MLA ATLAS Collaboration."Constraints on new phenomena via Higgs boson couplings and invisible decays with the ATLAS detector".JOURNAL OF HIGH ENERGY PHYSICS 2015.11(2015):206.
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