The LHC provides CMS with millions of collisions each second, and a wealth of physics data is obtained from the proton-proton interactions. In order to record all these data for analyses, all CMS sub-detectors have to be performing optimally.

Physicists analyze LHC collision data recorded by the CMS detector and make all the research results freely available

The international physics masterclasses allow high-school students to spend a day at a research institute and analyse real data from high-energy physics experiments.

The t t-bar production cross section and top quark mass are measured in proton-proton collisions at sqrt(s) = 7 TeV in a data sample corresponding to an integrated luminosity of 36 inverse picobarns collected by the CMS experiment.