This year, the LHC is colliding more than protons and lead ions: oxygen and neon have also made it into the collider, and are being studied by CMS and the other LHC experiments in order to understand the early universe!
Chasing light-weight particles in Higgs boson decays using pairs of electrons
The CMS experiment sets limits for BSM particles down to tens-of-MeV aided by machine learning techniques.
CMS at the 2025 Cessy Colour Run and Pass’Sport
On the 9th of June, CMS took part in the annual ‘Colour Run’ in Cessy, France. This is a local event organised by the Cessy town hall for the people of Cessy and Pays du Gex, and features a 5km fun run with powdered paint being thrown at 1km intervals by eager spectators!
CMS Awards 2024
The CMS Collaboration is pleased to announce the recipients of the 2024 CMS Awards, recognizing individuals who have made significant contributions across the experiment.
Teaching machines to see the invisible: the DeepMET algorithm
The CMS experiment employs a new machine-learning algorithm to improve the reconstruction of invisible particles.
B* mesons are excited to (finally) show up
For the first time ever, the excited states of three beauty mesons are fully reconstructed and their masses are measured directly, using data from the CMS experiment.
CMS inaugurates its new Control Room
CMS has officially inaugurated its new control room in Cessy, France. Guests from CERN management and all the LHC experiments were invited to celebrate this significant upgrade to CMS’ operational infrastructure.
Thea Årrestad wins EPS Young Experimental Physicist Prize 2025
The 2025 Young Experimental Physicist Prize is awarded jointly to Thea Klæboe Årrestad (CMS) and Laura Zani for their remarkable and complementary contributions to experimental particle physics.