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…

  One of the unique features of the weak interaction is its ability to transform one quark flavor into another. However, not all flavor transitions are equally likely. Some occur relatively often, while others are extremely rare because the Stan…

  After years of effort to imagine, design, develop, build, and coordinate, a new chapter for the CMS Drift Tubes has finally begun! Commissioning of the CMS DT system for the High-Luminosity LHC upgrade is officially underway. The DTs are gas-f…