Hayrapetyan, A.Tumasyan, A.Adam, W.Andrejkovic, J. W.Bergauer, T.Chatterjee, S.Damanakis, K.Özdemir, Kadri2025-03-202025-03-2020241029-8479https://doi.org/10.1007/JHEP03(2024)134https://hdl.handle.net/20.500.14034/2524A search for dark matter particles is performed using events with a pair of W bosons and large missing transverse momentum. Candidate events are selected by requiring one or two leptons (l = electrons or muons). The analysis is based on proton-proton collision data collected at a center-of-mass energy of 13TeV by the CMS experiment at the LHC and corresponding to an integrated luminosity of 138 fb(-1). No significant excess over the expected standard model background is observed in the l nu qq and 2l2 nu final states of the W+W- boson pair. Limits are set on dark matter production in the context of a simplified dark Higgs model, with a dark Higgs boson mass above the W+W- mass threshold. The dark matter phase space is probed in the mass range 100-300 GeV, extending the scope of previous searches. Current exclusion limits are improved in the range of dark Higgs masses from 160 to 250 GeV, for a dark matter mass of 200 GeV.eninfo:eu-repo/semantics/openAccessBeyond Standard ModelDark MatterHadron-Hadron ScatteringVector Boson ProductionArticle10.1007/JHEP03(2024)1343Q1WOS:0012530916000012-s2.0-85195126092Q1