Summary Plots from ATLAS Searches for Pair-Produced Leptoquarks

This note collects summary plots with exclusion contours derived for four different pair-production scenarios of scalar leptoquarks. In all these scenarios, the decay products of the leptoquarks include only quarks from the third generation, whereas depending on the scenario they can either include third-generation leptons (neutral or charged) or first-/second-generation leptons. Several dedicated searches and two reinterpretations of searches for supersymmetric particles target these signal models. The full Run-2 dataset recorded with the ATLAS detector in proton–proton collisions at √s = 13 TeV is used, corresponding to an integrated luminosity of 139/fb. The contours indicate the observed and expected exclusion limits as a function of the leptoquark mass and the branching fraction of the leptoquarks into a quark and a charged lepton.