The result is based on over 300 inverse femtobarns of proton–proton collision data, which is equivalent to 30 000 trillion collisions

The ATLAS Collaboration reports its first measurement of proton–oxygen collisions at the LHC, which recreate cosmic-ray interactions with Earth’s atmosphere

On 19 February 2026, the ATLAS Collaboration gathered for the 2025 Thesis Awards – an annual celebration of the vital role of PhD students within the experiment

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.

The ATLAS collaboration celebrated the dedication, ingenuity and collaborative spirit of its members at the 8th Outstanding Achievement Awards

The detection of longitudinally polarised W boson production at the Large Hadron Collider is an important step towards understanding how the primordial electroweak symmetry broke, giving rise to the masses of elementary particles

Spokesperson Stéphane Willocq and Deputy Spokespersons Anna Sfyrla and Guillaume Unal will lead the collaboration for the next two years

Every year, these awards celebrate the outstanding achievements made by PhD students working with the collaboration

ATLAS reports the first observation of a Z boson accompanied by two other carriers of the weak force

New ATLAS measurement of the lifetime of the electrically neutral beauty meson is the most precise to date

The result opens a new window into the study of the quark–gluon plasma that is believed to have filled the Universe briefly after the Big Bang

The ATLAS experiment at the LHC reveals how pairs of top quarks are produced along with other heavy quarks