Hadronization is the conversion of colored quarks and gluons into color-neutral hadrons. It affects exclusive final-state distributions even when an inclusive observable can be approximated through a short-distance partonic calculation. A tree-level partonic decay width does not by itself model this conversion.
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Hadronization, also known as hadron creation or hadron formation, is a fundamental process in particle physics that occurs when high-energy quarks and gluons, which are the building blocks of protons, neutrons, and other hadrons, combine to form hadrons. This process is particularly important in high-energy collisions, such as those that occur in particle accelerators or in cosmic ray interactions.