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Search for invisible decays of Higgs bosons in the vector boson fusion and associated ZH production modes
CMS Collaboration
2014
发表期刊EUROPEAN PHYSICAL JOURNAL C
卷号74期号:8
通讯作者Chatrchyan, S (reprint author), Yerevan Phys Inst, Yerevan 375036, Armenia.
摘要A search for invisible decays of Higgs bosons is performed using the vector boson fusion and associated ZH production modes. In the ZH mode, the Z boson is required to decay to a pair of charged leptons or a bb quark pair. The searches use the 8TeV pp collision dataset collected by the CMS detector at the LHC, corresponding to an integrated luminosity of up to 19.7 fb(-1). Certain channels include data from 7TeV collisions corresponding to an integrated luminosity of 4.9 fb(-1).The searches are sensitive to non-standardmodel invisible decays of the recently observed Higgs boson, as well as additional Higgs bosons with similar production modes and large invisible branching fractions. In all channels, the observed data are consistent with the expected standard model backgrounds. Limits are set on the production cross section times invisible branching fraction, as a function of the Higgs boson mass, for the vector boson fusion and ZH production modes. By combining all channels, and assuming standard model Higgs boson cross sections and acceptances, the observed (expected) upper limit on the invisible branching fraction at m(H) = 125GeV is found to be 0.58 (0.44) at 95% confidence level. We interpret this limit in terms of a Higgs-portal model of dark matter interactions.
关键词DARK-MATTER LHC DETECTOR PARTICLE LEP
学科领域Physics
DOI10.1140/epjc/s10052-014-2980-6
收录类别SCI
语种英语
WOS类目Physics, Particles & Fields
WOS记录号WOS:000340574000001
引用统计
被引频次:74[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/311005/213756
专题粒子天体物理中心
作者单位中国科学院高能物理研究所
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CMS Collaboration. Search for invisible decays of Higgs bosons in the vector boson fusion and associated ZH production modes[J]. EUROPEAN PHYSICAL JOURNAL C,2014,74(8).
APA CMS Collaboration.(2014).Search for invisible decays of Higgs bosons in the vector boson fusion and associated ZH production modes.EUROPEAN PHYSICAL JOURNAL C,74(8).
MLA CMS Collaboration."Search for invisible decays of Higgs bosons in the vector boson fusion and associated ZH production modes".EUROPEAN PHYSICAL JOURNAL C 74.8(2014).
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