The CMS Collaboration announces several new results for LHCP 2026. Among the highlights are four new results including 2025 data, and two comprehensive performance papers. CMS presents a competitive measurement of time-dependent CP violation i…

  The CMS experiment reports the first observation of the rare decay of an eta meson to two muons and two electrons. The CMS detector was originally built to discover the Higgs boson and search for heavy particles that could transform our unders…

CMS sets the world’s most stringent limits on B⁰ and B⁰ₛ decays into four muons. After examining the Run 3 dataset collected between 2022 and 2024, the CMS experiment has established the most stringent limits to date on the extremely rare decays of…