Search for new non-resonant phenomena in high-mass dilepton final states with the ATLAS detector

Understand

A search for new physics with non-resonant signals in dielectron and dimuon final states in the mass range above 2 TeV is presented.

• This is the first search for non-resonant signals in dilepton final states at the LHC to use a background estimate from the data.
• The data, corresponding to an integrated luminosity of 139 fb$^{-1}$, were recorded by the ATLAS experiment in proton-proton collisions at a center-of-mass energy of $\sqrt{s} = 13$ TeV during Run 2 of the Large Hadron Collider.
• The benchmark signal signature is a two-quark and two-lepton contact interaction, which would enhance the dilepton event rate at the TeV mass scale.