top quark

From CERN, Oct. 7, 2019: The CMS collaboration has measured for the first time the variation, or “running,” of the top quark mass. The theory of quantum chromodynamics predicts this energy-scale variation for the masses of all quarks and for the strong force acting between them. Observing the running masses of quarks can therefore provide a way of testing quantum chromodynamics and the Standard Model.

From Live Science, June 4, 2018: Fermilab scientist Don Lincoln writes about two new results on how scientists found the Higgs boson popping up along with the heaviest particle ever discovered. The results could help us better understand one of the most fundamental problems in physics ­— why matter has mass.

From Live Science, June 4, 2018: The Higgs boson appeared again at the world’s largest atom smasher — this time, alongside a top quark and an antitop quark, the heaviest known fundamental particles.