Non-perturbative scales in soft hadronic collisions at high energy

We investigate the role of non-perturbative quark-gluon dynamics in soft high energy processes. In order to reproduce differential and total cross sections for elastic proton-proton and proton-antiproton scattering at high energy and small momentum transfer it turns out that we need two scales, the gluonic correlation length and a confinement scale. We find a small gluonic correlation length, a ∼- 0.2 fm, in accordance with recent lattice QCD results.