Extended Data Fig. 1: Schematic representation of a typical event selected in the SR.
From: Search for charged-lepton-flavour violation in Z-boson decays with the ATLAS detector

The topology as seen in the plane transverse to the beam line is shown. (a) A signal Z → ℓτ event. (b) A Z → ττ event. (c) A W + jets event. The green arrows represent reconstructed light leptons (ℓ). The blue triangles represent the τhad-vis candidates. The light blue dashed lines represent neutrinos that escape detection and are reconstructed as (part of) the missing transverse momentum of the event.