hadron

A composite particle that comprises two or more quarks held together by the strong force and (consequently) can interact with other particles via said force; a meson or a baryon.particle

• One can use the lattice simulations, which do represent the rigorous consequences of non-perturbative QCD, as guidance for models of hadron structure.
• And hence colour, which was initially an ad hoc concept, later turned out to be an empirically confirmed reality of hadrons.