Measurements of inclusive four-lepton production at ATLAS

Measurements of differential and integrated fiducial cross-sections in events with two same-flavor, opposite-sign electron or muon pairs are presented with the data corresponding to 139 fb$^{-1}$ of $\sqrt{s} = 13$ TeV proton-proton collisions collected by the ATLAS dectector during Run 2 of the Large Hadron Collider (2015-2018). The differential cross-sections exhibit a rich structure, which has contributions from a number of Standard Model processes, a complex mix of interferences as well as possible contributions from beyond-the-Standard Model physics. The measurements are corrected for detector effects. And interpretations including extraction of exotic $Z\rightarrow4\ell$ process branching ratio, evaluation of constraints on a model based on a spontaneously broken B-L gauge symmetry are performed with the measured results.