Atlas is one of the four flagship experiments at the Large Hadron Collider (LHC) at CERN. It is a general particle physics experiment driven by international collaboration and, together with the Compact Muon Solenoid (CMS), is designed to take advantage of its discovery potential and the wide range of physics opportunities provided by the Large Hadron Collider.

The Atlas experiment is used by research groups to test whether the predictions of the Standard Model of physics are correct. The Standard Model encapsulates our current knowledge about the composition of matter and how its fundamental building blocks - protons, electrons, neutrons, photons, quarks, muons, bosons... - interact.