Light-Com [communication device for disabled child]

Gagnon, William L.; Pruehsner, W.; Enderle, John D.

doi:10.1109/nebc.1999.755800

Cited by 1 publication

(1 citation statement)

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“…Obviously, the main production channel via gluon fusion gg → h is not usable because it just gives missing energy. It was found through Monte Carlo simulations that the production via vector boson fusion (VBF) pp → hqq ′ and the associated productions pp → hZ and pp → htt can offer the opportunity to detect the Higgs decay to dark matter [22][23][24][25][26]. So in this work we choose these three production channels to display the observability of Higgs decay to dark matter in low energy SUSY.…”

Section: Introductionmentioning

confidence: 99%

Higgs decay to dark matter in low energy SUSY: is it detectable at the LHC?

Cao

Heng

Yang

et al. 2012

J. High Energ. Phys.

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Due to the limited statistics so far accumulated in the Higgs boson search at the LHC, the Higgs boson property has not yet been tightly constrained and it is still allowed for the Higgs boson to decay invisibly to dark matter with a sizable branching ratio. In this work, we perform a comparative study for the Higgs decay to neutralino dark matter by considering three different low energy SUSY models: the minimal supersymmetric standard model (MSSM), the next-to-minimal supersymmetric standard models (NMSSM) and the nearly minimal supersymmetric standard model (nMSSM). Under current experimental constraints at 2σ level (including the muon g − 2 and the dark matter relic density), we scan over the parameter space of each model. Then in the allowed parameter space we calculate the branching ratio of the SM-like Higgs decay to neutralino dark matter and examine its observability at the LHC by considering three production channels: the weak boson fusion V V → h, the associated production with a Z-boson pp → hZ + X or a pair of top quarks pp → htt + X. We find that in the MSSM such a decay is far below the detectable level; while in both the NMSSM and nMSSM the decay branching ratio can be large enough to be observable at the LHC. We conclude that at the LHC the interplay of detecting such an invisible decay and the visible di-photon decay may allow for a discrimination of different SUSY models.

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Section: Introductionmentioning

confidence: 99%