Hadronization

Hadronization or hadron formation is the process by which partons (quarks and gluons), which have color charge, form bound states called hadrons, which are colorless. Hadronization happens in a regime where the strong interaction is too strong to make calculations using perturbation theory. It can therefore not be calculated from first principles, but has to be described by a phenomenological model. Examples of hadronization models are the early Fields-Feynman model and the more modern Lund string model as well as the cluster model.