Extrapolation of hadron cross sections to supercollider energies within the two-component dual parton model

In the framework of a two-component dual parton model we perform a fit to pp̄ total, elastic, inelastic, and single-diffractive cross-section data at collider energies. The fit including diffractive data gives better results using the supercritical soft Pomeron instead of the critical one. Because of the different structure function parametrizations the predictions of cross sections at supercollider energies are subject to large uncertainties.