29th of June 2026 saw the end of the LHC Run 3, and the end of the LHC as we know it! The next time CMS records particle collisions, it will be in 2030, provided by the HL-LHC, and from a very different detector to what we have today. CMSers gathered…

  The CMS experiment presents the first measurement of ϒ mesons – bound states of a bottom quark-antiquark pair – in oxygen-oxygen and neon-neon collisions, and strongly indicates that their production is suppressed owing to quark-gluon plasma d…

Science & Art @ School returns with an action packed programme for schools local to CERN! After a successful pilot program last school year, the art@CMS local school engagement programme “Science & Art @ School” brought together almost 180 pr…