COLOUR DIPOLE PHENOMENOLOGY

Recent, precise HERA data on diffractive photoprocesses are analysed in the context of colour dipole models. The data on the deep inelastic structure function F₂ is used to determine the dipole cross section, and shown to prefer parameterisations which include saturation effects. The resulting dipole cross sections are then used to predict cross sections for DVCS and DDIS, which are in good agreement with experiment.