ATLAS breaks its own record with new search for double-Higgs production
Producing two Higgs bosons in a single proton-proton collision is among the rarest processes at the LHC. Yet…
ATLAS observes new Bc meson excited state
The ATLAS Collaboration reports the first observation of the Bc*+ meson – a new composite particle state containing…
ATLAS maps the rare four-way intersections of the weak force
Despite its resounding success at describing high-energy phenomena, the Standard Model of particle physics provides no explanation for…
Transforming sensitivity to new physics with single-top-quark events
The top quark, the heaviest known elementary particle, has captivated physicists since its discovery in the 1990s and…
Shining light on the Weak force: ATLAS observes WWγ production
The ATLAS Collaboration reports its first observation of WWγ production – a rare process involving the simultaneous production…