The completion of the Physics Briefing Book on 2 October marks a major milestone towards the 2026 update of the European Strategy for Particle Physics

A new LHCb analysis confirms a previously observed tension with the Standard Model, but more data and improved theoretical calculations are needed to determine whether new physics is at play

The first high-energy collisions between light nuclei at the Large Hadron Collider confirm the unusual “bowling-pin” shape of neon nuclei and offer up a new tool to study the extreme state of matter produced in the aftermath of the Big Bang

An experiment carried out at CERN’s ISOLDE facility has determined the western shore of a small island of atomic nuclei, where conventional nuclear rules break down

Demonstration of first antimatter quantum bit paves the way for substantially improved tests of nature’s fundamental symmetries

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.

On 9 July 1925, in a letter to Wolfgang Pauli, Werner Heisenberg revealed his new ideas, which were to revolutionise physics

The CMS and ATLAS experiments at CERN’s Large Hadron Collider have observed an unforeseen feature in the behaviour of top quarks that suggests that these heaviest of all elementary particles form a fleeting union