The ATLAS and CMS Experiments at CERN have just released a new measurement of the mass of the top quark. The new result combines 15 previous measurements to give the most precise determination of the top-quark mass to date.
The Start of the 2023 Heavy-Ion Run
Yesterday at 7:46 pm the first stable beams of the LHC 2023 heavy-ion run have been recorded. The heavy-ion run allows CMS scientists to study states of matter similar to those of the early universe.
Complete Run 1 Heavy Ion Open Data Collection
New release of simulations, proton-lead collision data, and proton reference data
Performance of jet flavour algorithms: ML to calibrate ML in data
Very quickly after quarks are produced in proton-proton c
Detector showers wash away backgrounds of new long-lived particles
Most searches for new physics b
