CERN Accelerating science

Lane closures and intersection changes from 19 May to 29 August 2025

Check out this curated list of upcoming events for the CERN community

The CMS collaboration presents a new search for the decay of a Higgs boson into charm quarks, bringing physicists closer to unravelling how this unique particle endows matter with mass

On 16 May 2025, CERN Director-General Fabiola Gianotti and Minister of Science, Technology, Knowledge and Innovation of Chile, Aisén Etcheverry signed an agreement admitting Chile as an Associate Member State of CERN

“Stable" particle beams are back in the LHC machine, marking the start of the 2025 physics data-taking campaign

This week marked not only ten years since the first Associate Member State joined CERN but also a newly signed Associate Member State agreement, extending the CERN family

CERN will feature in the second semi-final of Basel 2025 on Thursday, 15 May 2025

Congratulations to everybody across CERN who was involved in the CERN70 communications campaign, which won the “In-house team of the year” award

On 8 May 2025, CERN Director-General Fabiola Gianotti and Irish Minister for Further and Higher Education, Research, Innovation and Science James Lawless signed an agreement admitting Ireland as an Associate Member State of CERN

The LHC operations team and many other experts have been working hard to set up and validate the accelerator for safe beam operation, leading to the first stable beams for physics of 2025 on 5 May