312 citations · 810 across the 4 of their papers we have counts for
4 papers
A Numerical Unitarity Formalism for One-Loop Amplitudes
R. Keith Ellis, Walter T. Giele, Zoltan Kunszt
The unitarity method for calculating one-loop amplitudes provides algorithms of polynomial complexity. This is primarily beneficial for the computation of multi-leg one loop amplit…
Full one-loop amplitudes from tree amplitudes
Walter T. Giele, Zoltan Kunszt, Kirill Melnikov
We establish an efficient polynomial-complexity algorithm for one-loop calculations, based on generalized -dimensional unitarity. It allows automated computations of both cut-co…
A Numerical Unitarity Formalism for Evaluating One-Loop Amplitudes
R. K. Ellis, W. T. Giele, Z. Kunszt
Recent progress in unitarity techniques for one-loop scattering amplitudes makes a numerical implementation of this method possible. We present a 4-dimensional unitarity method for…
D-dimensional unitarity cut method
Charalampos Anastasiou, Ruth Britto, Bo Feng +2
We develop a unitarity method to compute one-loop amplitudes with massless propagators in d=4-2*epsilon dimensions. We compute double cuts of the loop amplitudes via a decompositio…