The CMS and ATLAS experiments at CERN’s Large Hadron Collider have observed an unforeseen feature in the behaviour of top quarks that suggests that these heaviest of all elementary particles form a fleeting union.

Modern AI techniques are unlocking new ways to analyse particle collisions, and ATLAS is embracing the possibilities.

The ATLAS Collaboration finds evidence of Higgs-boson decays to muons and improves sensitivity to Higgs-boson decays to a Z boson and a photon.

In a new result presented today at EPS-HEP in Marseille, ATLAS physicists measured how often top-quark pairs are produced near the production threshold

The ATLAS Collaboration is set to make waves at the EPS-HEP 2025 conference, unveiling a wide range of new results.