Author:
Hartanto Heribertus Bayu,Badger Simon,Brønnum-Hansen Christian,Peraro Tiziano
Abstract
Abstract
We present the first numerical results for the two-loop helicity amplitudes for the scattering of four partons and a W-boson in QCD. We use a finite field sampling method to reduce directly from Feynman diagrams to the coefficients of a set of master integrals after applying integration-by-parts identities. Since the basis of master integrals is not yet fully known analytically, we identify a set of master integrals with a simple divergence structure using local numerator insertions. This allows for accurate numerical evaluation of the amplitude using sector decomposition methods.
Publisher
Springer Science and Business Media LLC
Subject
Nuclear and High Energy Physics
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