The FRITIOF model for very high energy hadronic collisions

We implement the high-PT dynamics, namely parton scattering of the Rutherford type, into the framework of the FRITIOF model. Such high-PT effects are increasingly important in hadronic collisions at higher energies and it is crucial to include them for a model intended to describe the collision and particle production processes. In our treatment the Rutherford parton scattering (RPS) is intimately related to the gluon bremsstrahlung radiation. By investigating their interrelation we arrive at a FRITIOF implementation of RPS which is infrared stable. The results of the model are in excellent agreement with experimental data up to the highest energies. The model predicts a restoration of KNO scaling as a good approximation in the TeV energy regime. (orig.)