Boosting invisible searches via $\mathbf{ZH}$: From the Higgs Boson to Dark Matter Simplified Models

Abstract

Higgs boson production in association with a $Z$-boson at the LHC is analysed, both in the Standard Model and in Simplified Model extensions for Dark Matter. We focus on $H\to$invisibles searches and show that loop-induced components for both the signal and background present phenomenologically relevant contributions to the $\mathcal{B}\mathcal{R}(H\to \text{inv})$ limits. In addition, the constraining power of this channel to Simplified Models for Dark Matter with scalar and pseudo-scalar mediators $\varphi$ and $A$ is discussed and compared with non-collider constraints. We find that with $100f{b}^{-1}$ of LHC data, this channel provides competitive constraints to the non-collider bounds, for most of the parameter space we consider, bounding the universal Standard Model fermion-mediator strength at $g_v<1$ for moderate masses in the range of $100\text{GeV}<m_{\varphi /A}<400$ GeV.

10 pages, 9 figures

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Cited by in corpus (10)

• Simplified Models for Dark Matter Face their Consistent Completions
• Boosting to identify: pseudoscalar searches with di-leptonic tops
• Higher-order EW corrections in ZZ and ZZj production at the LHC
• Funnel annihilations of light dark matter and the invisible decay of the Higgs boson
• Boosting the $H\to$ invisibles searches with $Z$ boson polarization
• Actual Physics behind Mono-X
• Role of the $Z$ polarization in the $H\to b\bar{b}$ measurement
• Dark Matter from Electroweak Single Top Production
• Tagging Jets in Invisible Higgs Searches
• Boosting Invisible Higgs Searches by Tagging a Gluon Jet for Gluon Fusion Process