Using Z bosons, the CMS experiment reveals new details of how the Quark-Gluon Plasma drains energy from energetic quarks and challenges current theoretical descriptions. To understand the Quark-Gluon Plasma (QGP), the hottest matter in the Universe…

  The CMS Collaboration announces 28 new results for ICHEP 2026. Among the highlights are three new results including 2026 data, and several brand new searches. The CMS Collaboration is presenting a broad portfolio of new physics results at the…

One of the largest structures of CMS's future High Granularity Calorimeter (HGCAL) has successfully completed a demanding series of cold tests, marking an important milestone on the road to the High-Luminosity LHC and the next era of particle physics…