Diagrammatic proof of the BCFW recursion relation for gluon amplitudes in QCD
SourceEuropean Physical Journal C, 46, 3, (2006), pp. 741-750
Article / Letter to editor
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Theoretical High Energy Physics
European Physical Journal C
SubjectTheoretical High Energy Physics
We present a proof of the Britto Cachazo Feng Witten tree-level recursion relation for gluon amplitudes in QCD, based on a direct equivalence between BCFW decompositions and Feynman diagrams. We demonstrate that this equivalence can be made explicit when working in a convenient gauge. We exhibit that gauge invariance and the particular structure of Yang Mills vertices guarantee the validity of the BCFW construction.
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