CERN Accelerating science

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

The CMS Collaboration has probed deep inside quarks to search for potential building blocks within them

A new independent measurement by the CMS experiment at the LHC is consistent with the existence of the most massive composite particle ever observed, the momentary union of a top quark and its antiquark

Using machine-learning techniques, the ATLAS Collaboration has searched deep for signs of particles that could help answer some of the greatest mysteries of physics

Composed of two charm quarks and one down quark, the doubly charmed particle is four times heavier than a proton

Study of the one-in-ten-billion kaon decay allows researchers to stress-test the Standard Model of particle physics