Small x, Saturation and the High Energy Limit of QCD

Abstract

The high energy limit of QCD is controlled by the small-$x$ part of a hadron wavefunction. We argue that this part is universal to all hadrons and is composed of a new form of matter: a Colored Glass Condensate. This matter is weakly interacting at very small $x$, but is non-perturbative because of the highly occupied boson states which compose the condensate. Such a matter might be studied in high energy lepton-hadron or hadron-hadron interactions.

Comments: 6 pages, 1 figure. Invited talk at the XXXVth Rencontres de Moriond on QCD and Hadronic Interactions March 18 -- 25, 2000, Les Arcs, France