CERN Accelerating science

What is the Universe made of?

Have you ever observed the CMS logo?
It depicts the CMS detector with its concentric layers and four muon tracks.

While experimental results at the LHC conti

The heaviest known particle, the top quark, is one of our main gateways to search for new phenomena that are not addressed by our existing knowledge, the standard model of particle physics (SM), either through precision measurements of the top quark’s properties or by considering it as a decay pr

The CMS collaboration welcomes its ninth management team: the new spokesperson, Patricia McBride, and the two deputies, Wolfgang Adam and Lucia Silvestris, will represent the Collaboration for the next two years.

While the CMS detector takes data 24 /7, physicists take turns in the control room every 8 hours, ensuring continuity of operations and keeping the detector running continuously. Experts located around the world are present at all times to respond to requests from the shift crew.

Have you heard of vector-like quarks? They are hypothetical particles which would provide an explanation to the value of the Higgs boson mass, which is still a mystery.

Rare events, such as a total solar eclipse or a supernova explosion, are fascinating and stimulate our imagination. In addition, such events may lead to discoveries expanding our ​​knowledge horizon.

CMS has developed a new method to measure the properties of the top quark with high precision. It relies on an innovative way to cluster particles into jets.

The processes that are mostly studied at the LHC are caused by energetic collisions where the protons break up into their constituents, the quarks and gluons, which recombine to form composite hadrons.