discovery of the top quark , if confirmation , completes an set of subatomic build stones its existence is predicted by the prevailing theory , or the standard model , of the particles and forces that define the fundamental constituent of matter and energy . in the whimsical thesaurus of modern physics , the elementary spins are the particle , leptons and bosons .
Quarks, leptons, and bosons are the three elementary particles of physics according to the Standard Model.