2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/40034I give a short presentation of the theoretical prediction of epsilon-prime/epsilon. Short distance and especially long distance aspects of the computation is discussed. I consentrate on the general framework and the chiral quark model approach, while other approaches are also shortly presented. Because of the intrinsic uncertainties of the long-distance computations, it is unlikely that new physics effects can be disentangled from the standard model prediction.10 pages, 2 figures. Talk given at NATO Advanced Study Institute 2000, "Recent Developments in Particle Phsics and Cosmology". 26.June-7July, Cascais, PortugalHigh Energy Physics - Phenomenologytext