Search for electroweak production of charginos and neutralinos at sqrt(s) = 13 TeV in final states containing hadronic decays of WW, WZ, or WH and missing transverse momentum

This Letter presents a search for direct production of charginos and neutralinos via electroweak interactions. The results are based on data from proton-proton collisions at a center-of-mass energy of 13TeVcollected with the CMS detector at the LHC, corresponding to an integrated luminosity of 137fb−1. The search considers final states with large missing transverse momentum and pairs of hadronically decaying bosons WW, WZ, and WH, where His the Higgs boson. These bosons are identified using novel algorithms. No significant excess of events is observed relative to the expectations from the standard model. Limits at the 95% confidence level are placed on the cross section for production of mass-degenerate wino-like supersymmetric particles χ±1and χ02, and mass-degenerate higgsino-like supersymmetric particles χ±1, χ02, and χ03. In the limit of a nearly-massless lightest supersymmetric particle χ01, wino-like particles with masses up to 870 and 960GeVare excluded in the cases of χ02→Z χ01and χ02→H χ01, respectively, and higgsino-like particles are excluded between 300 and 650GeV.