SMALL-X PHYSICS IN DEEP-INELASTIC LEPTON SCATTERING

The perturbative QCD predictions concerning deep inelastic scattering at low x are summarized. The theoretical framework based on the leadin g log 1/x resumation and k(t) factorization theorem is described. The role of studying final states in deep inelastic scattering for reveali ng the details of the underlying dynamics at low x is emphasized and s ome dedicated measurements, like deep inelastic scattering accompanied by an energetic jet, the measurement of the transverse energy how and deep inelastic diffraction, are briefly discussed.