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Twistor String Theory and QCD
Lance J. Dixon
I review recent progress in using twistor-inspired methods to compute perturbative scattering amplitudes in gauge theory, for application to collider physics.
Recent Developments in Perturbative QCD
Lance J. Dixon
I review recent progress in perturbative QCD on two fronts: extending next-to-next-to-leading order QCD corrections to a broader range of collider processes, and applying twistor-s…
Bootstrapping Multi-Parton Loop Amplitudes in QCD
Zvi Bern, Lance J. Dixon, David A. Kosower
We present a new method for computing complete one-loop amplitudes, including their rational parts, in non-supersymmetric gauge theory. This method merges the unitarity method with…
Iteration of Planar Amplitudes in Maximally Supersymmetric Yang-Mills Theory at Three Loops and Beyond
Zvi Bern, Lance J. Dixon, Vladimir A. Smirnov
We compute the leading-color (planar) three-loop four-point amplitude of N=4 supersymmetric Yang-Mills theory in 4 - 2 epsilon dimensions, as a Laurent expansion about epsilon = 0…
The Last of the Finite Loop Amplitudes in QCD
Zvi Bern, Lance J. Dixon, David A. Kosower
We use on-shell recursion relations to determine the one-loop QCD scattering amplitudes with a massless external quark pair and an arbitrary number (n-2) of positive-helicity gluon…
On-Shell Recurrence Relations for One-Loop QCD Amplitudes
Zvi Bern, Lance J. Dixon, David A. Kosower
We present examples of on-shell recurrence relations for determining rational functions appearing in one-loop QCD amplitudes. In particular, we give relations for one-loop QCD ampl…