2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/39571In a simplified model we study how close can the result of a fast, non-equilibrium hadronization of quark matter in an expanding fireball come to hadronic composition in equilibrium. We present a chemical approach to the simple A+B --> C quark fusion, showing ideal equilibrium constrained by conservation laws, the fugacity parametrization, as well as linear and non-linear quark coalescence models as different approximations to this chemistry. It is shown that color confinement requires a quark density dependent hadronization cross section.LaTeX 11 pages, 1 ps figure. Revised version with additional text and Fig.1 replaced (some could not print the original)High Energy Physics - Phenomenologytext