Wesley Ketchum

The plot shows the number of events as a function of the dijet invariant mass for the dilepton plus dijet selection. There are three channels, and the channel with the most quark-like jets is shown (quark-tagged events). Fit results are overlaid for the ZW and ZZ processes. Quarks, the particles that make up nuclear matter, and gluons, the particles that mediate the strong force that holds nuclei together, share an important property: they both have “color.” Color, in particle physics,…