At the Initial Stages conference, CMS announces first brand new results based on the recent oxygen-oxygen and neon-neon collision data.   Here is an evolving list of all our results presented at the conference. Details of the papers and…

Build your own CMS detector at home! Well… sort of! Perhaps it won’t function just as well as the real deal, but you can keep a little model of it with you to gaze at, use it to help others visualise what the detector looks like, or keep it front…

  Turning the LHC into a photon collider, the CMS experiment observes for the first time how two photons fuse and convert into two W bosons. Stringent limits are set on parameters that would describe possible deviations from the standard…

  In a first search of its kind at the LHC, the CMS experiment looks for light beyond-the-standard-model particles with a mass in the GeV range that decay into charged hadrons and muons. It establishes that if they exist, they would be produced…

  The CMS experiment announces several new results for the Lepton-Photon 2025 conference. A major highlight is the high-precision measurement of the integrated luminosity. With an uncertainty of 0.73%, this is the most precise luminosity…

  In a much anticipated result, the CMS experiment presents the legacy combination of Higgs boson studies using the full LHC Run 2 data, recorded between 2016 and 2018 – the result is the most precise and comprehensive measurement of the Higgs…

The CMS Collaboration probes decays of the Z boson which would defy our expectations of lepton behavior How strict are Nature's conservation laws governing the interactions among elementary particles? Physicists once assumed, based on experience…

Measuring the charge asymmetry in W boson-associated production for the first time, paves the way for testing the coupling of the Higgs boson to charm and lighter quarks. A new angle on Higgs physics In a new analysis, the CMS experiment at CERN…

The increase in data processing capabilities means that CMS is one step closer to being ready for Run 4. The new Data Acquisition (DAQ) room is a state-of-the-art server room, essential for the Hi-Lumi phase of the detector and beyond. New server…

An interactive version of the event display is found on a separate, full page here. For the first time at a hadron collider, the CMS experiment measures the mass of the W boson from hadrons. Hadrons are particles made out of quarks and gluons, and…

  The CMS collaboration expands the search for supersymmetry by exploring a wide variety of final states with boosted particles, in a new analysis called “razor boost”. Supersymmetry, or SUSY, which suggests that every known particle has a new…

CMS breaks new ground by reconstructing challenging photon signatures using machine learning, opening new paths in the search for physics beyond the standard model. What if a new exotic particle from a non-standard Higgs boson decay escaped…