Fully Hadronic Diboson Searches in ATLAS

Fully hadronic diboson searches are a promising means of searching for new physics due to the large number of theoretical models predicting the existence of new mediators which couple to pairs of bosons, and because of the large hadronic branching fractions of Standard Model W, Z, and Higgs bosons. ATLAS has conducted three fully-hadronic diboson resonance searches using the full Run 2 dataset of 139 fb-1 of proton-proton collisions delivered by the LHC, aimed at di- vector-boson (WW/WZ/ZZ), vector boson plus Higgs (WH/ZH), and generic di-boson-like final states. The three searches have complementary sensitivity, and in particular the generic di-boson- like final state has weaker sensitivity for any specific model as it is instead designed to consider a wide range of possible new physics scenarios that are beyond the domain of acceptance of the other two dedicated searches. No significant deviations beyond the Standard Model expectation were observed in any of the searches, and thus limits are set on a variety of new physics models.