2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/41082The idea of partons and the utility of using light-cone gauge in QCD are introduced. Saturation of quark and gluon distributions are discussed using simple models and in a more general context. The Golec-Biernat W\usthoff model and some simple phenomenology are described. A simple, but realistic, equation for unitary, the Kovchegov equation, is discussed, and an elementary derivation of the JIMWLK equation is given.Cargese Lectures, 34 pages, 19 figuresHigh Energy Physics - Phenomenologytext