QCD FIELD CORRELATIONS IN HIGH-ENERGY SCATTERING

The two independent correlation functions describing nonperturbative p roperties of the QCD vacuum are taken into account in the evaluation o f the observables of soft high-energy hadron-hadron scattering. The mo del of the stochastic vacuum provides the framework in which a simple and effective description of the high-energy pp and (p) over bar p dat a can be given, leading to a determination of relevant parameters of n onperturbative QCD and to a good description of the data. The ratio be tween the non-Abelian and the Abelian parts of the field correlations is studied in terms only of high-energy data and the results are compa red to lattice calculations. It is shown that a slow increase of the h adronic radii with the energy accounts for the energy dependence of al l observables.