HEP2026: 42nd Conference on Recent Developments in High Energy Physics and Cosmology [NTUA] Jul 8 – 11, 2026

Searches for High-Mass Resonances in the ZZ→4ℓ Final State with the ATLAS Experiment

Jul 10, 2026, 3:20 PM

20m

Main Hall (Level 1) (National Technical University of Athens)

Experiments

Speaker

Konstantinos Sioulas (National and Kapodistrian University of Athens (GR))

Description

A search for heavy resonances decaying into a pair of Z bosons leading to the $\ell\ell\ell\ell$ final state is presented, using the Run3 data collected by the ATLAS detector at √s = 13.6 TeV. The results are interpreted separately for the ggF and VBF production modes, with events being classified into ggF-enriched and VBF-enriched categories. Reducible backgrounds from processes such as Z+jets and $t\bar{t}$ are estimated using a data-driven Fake Factor method. The statistical model is built and validated using Run 3 data, and expected limits are extracted as a function of the resonance mass.

Presentation materials

HEP2026_Sioulas.pdf