Eliminating spurious poles from gauge-theoretic amplitudes

@article{Hodges2009EliminatingSP,
  title={Eliminating spurious poles from gauge-theoretic amplitudes},
  author={Andrew P. Hodges},
  journal={Journal of High Energy Physics},
  year={2009},
  volume={2013},
  pages={1-23}
}
  • A. Hodges
  • Published 11 May 2009
  • Physics
  • Journal of High Energy Physics
A bstractThis note addresses the problem of spurious poles in gauge-theoretic scattering amplitudes. New twistor coordinates for the momenta are introduced, based on the concept of dual conformal invariance. The cancellation of spurious poles for a class of NMHV amplitudes is greatly simplified in these coordinates. The poles are eliminated altogether by defining a new type of twistor integral, dual to twistor diagrams as previously studied, and considerably simpler. The geometric features… 

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