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

CMS has more than 6,000 members, with institutions across 50+ countries, the CMS Collaboration is a truly global effort. This video series offers an inside look at 39 CMS laboratories worldwide. Explore the facilities where some of the detector’s ori…

  The CMS Collaboration announces several new results for the Hard Probes 2026 conference. The CMS Collaboration is presenting a number of new exciting results at The 13th International Conference on Hard and Electromagnetic Probes of High-Energ…