F_2 at low Q^2

Abstract

We analyse the data for the proton structure function $F_2$ over the entire $Q^2$ domain, including especially low $Q^2$, in terms of perturbative and non-perturbative QCD contributions. The small distance configurations are given by perturbative QCD, while the large distance contributions are given by the vector dominance model and, for the higher mass $q\overline{q}$ states, by the additive quark approach.

Comments: Contribution to the "QCD98 Euroconference", (Montpellier, France, July 1998).4 pages, LaTeX, uses espcrc2.sty, 3 eps figures; error in the authors list corrected