Search for Higgs boson pair production in association with top-quark pairs using 196 fb$^{-1}$ of proton-proton collision data at $\sqrt{s}=$ 13 and 13.6 TeV with the ATLAS detector
ArXiv 2603.13113 (2026)
Search for displaced decays of long-lived particles in events with missing transverse momentum in $\sqrt{s} = 13$ TeV $pp$ collisions with the ATLAS detector
ArXiv 2603.12051 (2026)
Search for Beyond the Standard Model physics with anomaly detection in multilepton final states in pp collisions at $$\sqrt{s}=13~\textrm{TeV}$$ with the ATLAS detector
The European Physical Journal C SpringerOpen 86:3 (2026) 247
Abstract:
A model-agnostic search for Beyond the Standard Model physics is presented, targeting final states with at least four light leptons (electrons or muons). The search regions are separated by event topology and unsupervised machine learning is used to identify anomalous events in the full 140聽fb-1$$^{-1}$$ of proton鈥損roton collision data collected with the ATLAS detector during Run 2. No significant excess above the Standard Model background expectation is observed. Model-agnostic limits are presented in each topology, along with limits on several benchmark models including vector-like leptons, wino-like charginos and neutralinos, or smuons. Limits are set on the flavourful vector-like lepton model for the first time.Search for decays of the Higgs boson into pair-produced pseudoscalar particles decaying into $蟿^+蟿^-蟿^+蟿^-$ using $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
ArXiv 2603.08323 (2026)
Search for long-lived charginos and $蟿$-sleptons using final states with a disappearing track in $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector
ArXiv 2603.08315 (2026)