German Sborlini (Università di Milano, INFN Sezione Milano and IFIC-Valencia)
We have recently proposed a new regularization framework based on the loop-tree duality theorem. This theorem allows to rewrite loop level amplitudes in terms of tree-level like structures and phase-space integrations. In consequence, it is possible to combine naturally real and virtual contributions at integrand level. Moreover, by introducing a proper momentum mapping, a complete local cancellation of infrared singularities is achieved, by-passing the necessity of counter-terms. In this talk, we explain the implementation of this novel approach to compute some physical processes, and we show how to deal with both infrared and ultraviolet divergences without using DREG.
Felix Driencourt-Mangin (IFIC Valencia) German Rodrigo (IFIC CSIC-UV) German Sborlini (Università di Milano, INFN Sezione Milano and IFIC-Valencia)