Twistor-Space Recursive Formulation of Gauge-Theory Amplitudes
High Energy Physics - Theory
2009-11-10 v2 High Energy Physics - Phenomenology
Abstract
Using twistor space intuition, Cachazo, Svrcek and Witten presented novel diagrammatic rules for gauge-theory amplitudes, expressed in terms of maximally helicity-violating (MHV) vertices. We define non-MHV vertices, and show how to use them to give a recursive construction of these amplitudes. We also use them to illustrate the equivalence of various twistor-space prescriptions, and to determine the associated combinatoric factors.
Keywords
Cite
@article{arxiv.hep-th/0406133,
title = {Twistor-Space Recursive Formulation of Gauge-Theory Amplitudes},
author = {I. Bena and Z. Bern and D. A. Kosower},
journal= {arXiv preprint arXiv:hep-th/0406133},
year = {2009}
}
Comments
28 pages, 13 figures, ReVTeX; updated references, cosmetic changes to figures, minor changes to text