Abstract
Motivated by the recent discovery of the Higgs boson, we investigate the possibility that a missing energy plus Higgs final state is the dominant signal channel for dark matter at the LHC. We consider examples of higher-dimension operators where a Higgs and dark matter pair are produced through an off-shell Z or γ, finding potential sensitivity at the LHC to cutoff scales of around a few hundred GeV. We generalize this production mechanism to a simplified model by introducing a Z′ as well as a second Higgs doublet, where the pseudoscalar couples to dark matter. Resonant production of the Z′ which decays to a Higgs plus invisible particles gives rise to a potential mono-Higgs signal. This may be observable at the 14 TeV LHC at low tan β and when the Z′ mass is roughly in the range 600 GeV to 1.3 TeV.
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Berlin, A., Lin, T. & Wang, LT. Mono-Higgs detection of dark matter at the LHC. J. High Energ. Phys. 2014, 78 (2014). https://doi.org/10.1007/JHEP06(2014)078
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DOI: https://doi.org/10.1007/JHEP06(2014)078