Search for lepton-flavour violation in high-mass dilepton final states using 139 ${\mathrm{fb}}^{-1}$ of $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector

ATLAS Collaboration

A search is performed for a heavy particle decaying into different-flavour, dilepton final states, using 139 ${\mathrm{fb}}^{-1}$ of proton-proton collision data at $\sqrt{s}=13$ TeV…