Nonperturbative QCD treatment of high-energy hadron-hadron scattering.

Total cross-sections and logarithmic slopes of the elastic scattering crosssections for different hadronic processes are calculated in the framework of the model of the stochastic vacuum. The relevant parameters of this model, a correlation length and the gluon condensate, are determined from scattering data, and found to be in very good agreement with values coming from completely different sources of information. A parameter-free relation is given between total cross-sections and slope parameters, which is shown to be remarkably valid up to the highest energies for which data exist. PACS Numbers : 12.38 Lg , 13.85 -t, 13.85 Dz , 13.85 Lg .