Speaker
Description
Final results of a search for pair-produced scalar and vector leptoquarks (LQs) in single-lepton final states are presented. The LQs are assumed to couple to third-generation quarks and first- or second-generation leptons. Such LQs with flavour-off-diagonal couplings arise for example in theories aiming for explanations of anomalies observed in $b\rightarrow s\ell \ell$ and $b\rightarrow c\ell \nu$ transitions.
In the search, the full Run-2 dataset collected with the ATLAS detector in proton-proton collisions at centre-of-mass energies of $13\,$TeV is used, corresponding to an integrated luminosity of $139\,$fb$^{-1}$. Neural networks are employed in order to efficiently distinguish signal contributions from background processes. In the absence of significant deviations from the Standard Model prediction, exclusion limits on eight LQ models are derived.
