EW and QCD One-Loop Amplitudes with RECOLA

Abstract

We present the computer code RECOLA for the computation of EW and QCD amplitudes in the Standard Model at next-to-leading order. One-loop amplitudes are represented as linear combinations of tensor integrals whose coefficients are calculated by means of recursive relations similar to Dyson-Schwinger equations. A novel treatment of colour enables us to recursively construct the colour structure of the amplitude efficiently. RECOLA is linked with the library COLLIER for the computation of the tensor integrals.

8 pages, to appear in the Proceedings of the 11th International Symposium on Radiative Corrections (Applications of Quantum Field Theory to Phenomenology), RADCOR 2013, Lumley Castle Hotel, Durham, UK, 2013