Speaker
Anton Olsson
(IPPP Durham)
Description
We present a new method for reconstructing scattering amplitudes directly in partial-fractioned form. By evaluating the amplitude on its singular surfaces, we derive constraints on the coefficients in the partial-fractioned ansatz. These constraints significantly reduce the number of integration-by-parts samples required for the reconstruction. The resulting amplitude representation is substantially smaller than the corresponding representation in the common-denominator form. We demonstrate the effectiveness of our method by applying it to state-of-the-art amplitude calculations.
Author
Anton Olsson
(IPPP Durham)