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Description
A search is performed for the electroweak pair production of charginos and associated production of a chargino and neutralino, each of which decays through an R-parity-violating coupling into a lepton and a W, Z, or Higgs boson. This search targets the Higgs boson decay channel, using events with three or more b-tagged jets and one or two electons or muons. The analyzed dataset corresponds to an integrated luminosity of 140 fb-1 and 56 fb-1 of proton–proton collision data produced by the Large Hadron Collider at center-of-mass energies of sqrt(s)=13 TeV and 13.6 TeV respectively, collected by the ATLAS experiment between 2015 and 2023. The data are found to be consistent with predictions from the Standard Model. The results are interpreted as limits at 95% confidence level on model-independent cross sections for processes beyond the Standard Model. Limits are also set on the production of charginos and neutralinos for a Minimal Supersymmetric Standard Model with an additional B-L symmetry which is spontaneously broken. Simultaneous exclusion limits on chargino and neutralino masses and their decay branching ratio to Higgs bosons are made.