Physicists have struggled for seven decades with the question of why there is more matter in the universe than antimatter.

The emission of beta radiation provides evidence that neutrons and protons are made up of quarks. Beta (\(\beta^-\)) decay is the release of an electron by the change of a neutron to a proton.

Countless neutrinos fly through you every second! Neutrinos, a category of leptons, have no electric charge and do not feel the strong interactions that bind the quarks into protons and neutrons.

Top quarks follow the rules of special relativity day and night. Is there a time of day or night at which nature's heaviest elementary particle stops obeying Einstein's rules? The answer to that ...