Final Activity Report Summary - HQPRECISION (Precision study of heavy quark production at high energy colliders)
In the project carried out here, a variety of new methods for the computation of perturbative corrections to scattering amplitudes were developed and applied. Most prominently, very important contributions were made to the unitarity-cut method, which allows the systematic reconstruction of complicated scattering amplitudes in terms of much simpler ingredients. This method was applied to obtain very compact expressions for previously unknown multi-photon and multi-gluon amplitudes, relevant for collider physics studies.