One-Loop Gauge Theory Amplitudes with an Arbitrary Number of External Legs
Bern, Z. · Dixon, L. · Dunbar, D. · Kosower, D. A.
Original · EN
We review recent progress in calculations of one-loop QCD amplitudes. By imposing the consistency requirements of unitarity and correct behavior as the momenta of two legs become collinear, we construct ansatze for one-loop amplitudes with an arbitrary number of external legs. For supersymmetric amplitudes, which can be thought of as components of QCD amplitudes, the cuts uniquely specify the amplitude.
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