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 hunts for a new “soft” signature of the dark sector
The ATLAS Collaboration releases its first dedicated search for soft unclustered energy patterns (SUEPs) – an elusive possible…
ATLAS observes new Bc meson excited state
The ATLAS Collaboration reports the first observation of the Bc*+ meson – a new composite particle state containing…
Long-Standing Muon Mystery May Be Settled
A new high-precision calculation of a key component underpinning the magnetic moment of the muon, a heavier cousin…
CERN Physicists Discover Heavier Cousin of Proton
Physicists from the LHCb experiment at CERN’s Large Hadron Collider (LHC) have discovered a new kind of heavy…
ATLAS maps the top quark–Higgs boson interaction with multileptons
One of the central questions in particle physics is how fundamental particles acquire mass. The top quark, as…
ATLAS expands its reach into the high-rate frontier
Nature loves symmetry. Nowhere is this more evident than at the Large Hadron Collider (LHC), where the vast…
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…
Shape-shifting collisions probe secrets of early Universe
The first high-energy collisions between light nuclei at the Large Hadron Collider confirm the unusual “bowling-pin” shape of…