1.3k citations · 4.9k across the 58 of their papers we have counts for
5 papers · 1 filter
Fusing Gauge Theory Tree Amplitudes Into Loop Amplitudes
Z. Bern, L. Dixon, D. C. Dunbar +1
We identify a large class of one-loop amplitudes for massless particles that can be constructed via unitarity from tree amplitudes, without any ambiguities. One-loop amplitudes for…
Recent Progress in One-Loop Multi-Parton Calculations
Z. Bern, L. Dixon, D. C. Dunbar +1
We describe techniques that simplify the calculation of one-loop QCD amplitudes with many external legs, which are needed for next-to-leading-order (NLO) corrections to multi-jet p…
Calculation of Graviton Scattering Amplitudes using String-Based Methods
David C. Dunbar, Paul S. Norridge
Techniques based upon the string organisation of amplitudes may be used to simplify field theory calculations. We apply these techniques to perturbative gravity and calculate all o…
One-Loop Gauge Theory Amplitudes with an Arbitrary Number of External Legs
Z. Bern, L. Dixon, D. Dunbar +1
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 c…
One-Loop n-Point Gauge Theory Amplitudes, Unitarity and Collinear Limits
Z. Bern, L. Dixon, D. C. Dunbar +1
We present a technique which utilizes unitarity and collinear limits to construct ansatze for one-loop amplitudes in gauge theory. As an example, we obtain the one-loop contributio…