Eur. Phys. J. C 20, 77-91
The generalised vector dominance/colour-dipole picture of deep-inelastic scattering at low xG. Cvetic1, D. Schildknecht2, B. Surrow3 and M. Tentyukov2
1 Department of Physics, Universidad Técnica Federico Santa María, Valparaíso, Chile
2 Fakultät für Physik, Universität Bielefeld, 33501 Bielefeld, Germany
3 DESY, 22607 Hamburg, Germany
(Received: 16 February 2001 / Published online: 3 May 2001 -© Springer-Verlag / Società Italiana di Fisica 2001)
We give a detailed account of the recently formulated generalised vector dominan ce/co lour-dipole picture (GVD/CDP) of deep-inelastic scattering at low , including photoproduction. The approach, based on transitions, propagation and diffractive scattering via the generic structure of the two-gluon exchange, provides a unique and quantitatively successful theory for the total cross section, , at low x. The GVD/CDP is shown to imply the empirical low-x scaling law, with , that was established by a model-independent analysis of the experimental data.
© Società Italiana di Fisica, Springer-Verlag 2001