Search for resonances in four top quark events in the 2 lepton final state

Abstract

A first search is presented for BSM resonances in four top quark production in the 2 lepton channel, using $138{\mathrm{fb}}^{-1}$ $pp$ data collected at $\sqrt{s}=13$ TeV, and $35{\mathrm{fb}}^{-1}$ $\sqrt{s}=13.6$ TeV $pp$ data. No significant excess is observed; limits are set on vector Z', scalar, pseudoscalar and ALP mediators. Z' mediators with 50% width are excluded up to 850 GeV (1000 GeV expected).

Contribution to the 2026 Electroweak session of the 60th Rencontres de Moriond