Publication Date:
27 May 2013
Journal:
Journal of High Energy Physics
Last Updated:
2020-05-15T14:02:08.29+01:00
Issue:
5
Volume:
2013
DOI:
10.1007/jhep05(2013)135
page:
n/a-
abstract:
This 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 indicate a supersymmetric extension of the formalism at least to all NMHV amplitudes, allowing the dihedral symmetry of the super-amplitude to be made manifest. More generally, the definition of `momentum-twistor' coordinates suggests a powerful new approach to the study of scattering amplitudes.
Symplectic id:
356584
Submitted to ORA:
Not Submitted
Publication Type:
Journal Article