CERN Accelerating science

The CMS Collaboration announced the 2025 Young Researcher Prize winners during the September 2025 CMS Week. The winners are: Cécile Caillol, Elisabetta Manca, Mario Masciovecchio, Jennifer Ngadiuba!

Using data collected from 2016 to 2023 and cutting-edge machine learning, CMS observes for the first time the creation of a top quark together with a W and a Z boson – a process so rare it occurs only once in a trillion proton-proton collisions!

In the first search of its kind at a particle collider, the CMS experiment looks for partially visible sprays of particles (jets), containing leptons and dark matter using physics-informed machine learning.

Five years after the first evidence that heavy metal hits the top quark, CMS now observes the clash of two titans with higher precision at unprecedented energy.

The CMS Collaboration is proud to announce the recipients of the 2024 Industry and Partner Awards, which recognise the vital contributions of our partners in advancing the experiment's capabilities.

CMS scientists are on the hunt for a new, heavy particle that decays into a pair of Higgs bosons. Using the final state with two bottom quarks and two tau leptons, the search sets the most stringent limits to date in the mass range 1.4–4.5 TeV.

It's with great pride that the CMS Collaboration announces the winners of the 2024 CMS PhD Thesis Award. After a rigorous evaluation of a remarkable pool of 19 nominees, we are delighted to honour Congqiao Li, Christina Wenlu Wang, and Ho Fung Tsoi for their exceptional work. 

CMS observes collective motion of particles in light-ion collisions, providing robust evidence of how initial nuclear geometry maps to final-state flow.