How do you install new, additional components in an already compact machine? CMS Cathode Strip Chamber (CSC) muon detectors are being removed to make way for major upgrades, before returning to their place in the experiment’s transformed configuratio…

Under a new scheme funded by the CMS Collaboration's share of the 2025 Breakthrough Prize in Fundamental Physics, early-career researchers have been selected as the inaugural recipients of the CMS Breakthrough Prize PhD Awards. The awards provide ded…

  The CMS experiment performs the first collider search for “inelastic dark matter” in the case where dark-matter particles travel a measurable distance before decaying into a pair of low-momentum electrons. Most of the matter in the universe is…