The CMS experiment at CERN

CMS (Compact Muon Solenoid) is one of the four experiments of the Large Hadron Collider (LHC) at CERN. The CMS international collaboration consists of 229 institutes from more than 50 countries around the world, involving about 5500 scientists, engineers, technicians, and students.

CMS focuses its scientific activity on precision measurements and on the search for new particles beyond the Standard Model, with the aim of providing answers to fundamental questions such as: what is dark matter? does supersymmetry exist? what is the microscopic explanation of gravity and do extra-dimensions exist?

The LHC phase-2, High Luminosity LHC, will begin in 2026 and will require a general upgrade of the CMS detectors, in order to be able to acquire the huge amount of data produced in proton-proton collisions and to face the very high radiation level foreseen in this new phase.

The CMS Rome group played a key role in the research and development phase of the construction of the electromagnetic calorimeter, and is still responsible for ensuring its calibration and performance. Moreover the group is very active in the construction of the new Mip Timing Detector for the LHC phase 2. Leveraging its expertise on the reconstruction of electrons, photons and jets, the group has played a crucial role in the discovery of the Higgs boson. Currently, the group is actively involved in several leading-edge analyses of the experiment, such as precision measurements of the Higgs parameters and direct and indirect searches for new particles.