Abstract
Searches for dark matter produced via scalar resonances in final states consisting of Standard Model (SM) particles and missing transverse momentum are of high relevance at the LHC. Motivated by dark-matter portal models, most existing searches are optimized for unbalanced decay topologies for which the missing momentum recoils against the visible SM particles. In this work, we show that existing searches are also sensitive to a wider class of models, which we characterize by a recently presented simplified model framework. We point out that searches for models with a balanced decay topology can be further improved with more dedicated analysis strategies. For this study, we investigate the feasibility of a new search for bottom-quark associated neutral Higgs production with a \( b\overline{b}Z+{p}_{\textrm{T}}^{\textrm{miss}} \) final state and perform a detailed collider analysis. Our projected results in the different simplified model topologies investigated here can be easily reinterpreted in a wide range of models of physics beyond the SM, which we explicitly demonstrate for the example of the Two-Higgs-Doublet model with an additional pseudoscalar Higgs boson.
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Acknowledgments
We thank Jose Miguel No and Katherina Behr for useful discussions. D.P.A., A.G., V.M.L., C.S., and G.W. acknowledge support by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence Strategy — EXC 2121 “Quantum Universe” — 390833306. H.B. acknowledges support from the Alexander von Humboldt foundation. V.M.L. acknowledges the financial support by Ministerio de Universidades and “European Union-NextGenerationEU/PRTR” under the grant María Zambrano ZA2021-081, and the Spanish grants PID2020-113775GB-I00 (AEI/10.13039/501100011033) and CIPROM/2021/054 (Generalitat Valenciana). This work has been partially funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) — 491245950.
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Adan, D.P., Bahl, H., Grohsjean, A. et al. A new LHC search for dark matter produced via heavy Higgs bosons using simplified models. J. High Energ. Phys. 2023, 151 (2023). https://doi.org/10.1007/JHEP08(2023)151
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DOI: https://doi.org/10.1007/JHEP08(2023)151