Particle physics is the study of the elementary building blocks of matter and radiation. At this scale, we move beyond atoms to the truly fundamental particles that have no substructure.
: This group includes the electron and the elusive, "ghostly" neutrino. Foundations of nuclear and particle physics
: This is the current "rulebook" of the universe, describing 12 matter particles (fermions) and four force carriers (bosons). Particle physics is the study of the elementary
Nuclear physics focuses on the atomic nucleus—the dense core of protons and neutrons at the center of every atom. Fundamental Nuclear and Particle Physics Section Foundations of nuclear and particle physics