We present an approach to compute two-loop amplitudes combining Feynman diagram input, numerical sampling over finite fields and functional reconstruction techniques. We apply the method to compute numerically W+4 parton scattering amplitudes and to derive analytical form of four-quark one-gluon amplitudes, both in the leading colour approximations.
How to cite
Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating
very compact bibliographies which can be beneficial to authors and
readers, and in "proceeding" format
which is more detailed and complete.