The Standard Model - CERN
Learn about the six leptons, the matter particles that have an electric charge and a sizeable mass, and their role in the Standard Model of particle physics. The Standard Model explains how the leptons and other matter particles interact with each other and the four fundamental forces.
The Large Hadron Collider - CERN
The LHC is the world’s largest and most powerful particle accelerator, colliding high-energy beams of protons and ions at four locations around a 27-kilometre ring. Learn about its history, features, experiments, achievements and latest news.
Home | CERN
CERN is a leading research centre for particle physics and related technologies. It operates the Large Hadron Collider, the world's largest and most powerful particle accelerator, and explores fundamental questions about the nature of the Universe.
The birth of the Web | CERN
Learn how British scientist Tim Berners-Lee invented the World Wide Web in 1989 while working at CERN. Find out how CERN made the web software public domain and open source in 1993.
The Higgs boson - CERN
Learn about the Higgs boson, the particle that gives mass to all other particles, and how it was discovered at CERN in 2012. Explore what we have learned since then and what we are still trying to find out about this elusive field and its role in the universe.
About - CERN
CERN is a European laboratory that uses the world's largest and most complex scientific instruments to study the basic constituents of matter – fundamental particles. Learn about CERN's history, its flagship accelerator the LHC, and its impact on society and science.
Welcome | CERN
Science. The research programme at CERN covers topics from kaons to cosmic rays, and from the Standard Model to supersymmetry. Know more
A short history of the Web | CERN
Learn how Tim Berners-Lee invented the World Wide Web (WWW) in 1989 while working at CERN, and how it revolutionised communications worldwide. Discover the key milestones, concepts and features of the Web, from the first server and browser to the global network.
Antimatter - CERN
Antimatter is the exact opposite of matter in every way, except for having opposite charge. Learn how antimatter was discovered, how it is produced and studied at CERN, and why there is more matter than antimatter in the universe.
CMS - CERN
CMS is a large experiment that studies the Standard Model and searches for new physics at the Large Hadron Collider. It uses a 14,000-tonne solenoid magnet to bend the paths of particles from collisions and has a global collaboration of 5500 researchers.