Diagrammatic proof of the BCFW recursion relation for gluon amplitudes in QCD

Details Diagrammatic proof of the BCFW recursion relation for gluon amplitudes in QCD Diagrammatic proof of the BCFW recursion relation for gluon amplitudes in QCD

2005-11-25

arxiv.org/abs/hep-ph/0511288v1

Eur.Phys.J.C46:741-750,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

24 pages, 33 figures

Scientific paper

10.1140/epjc/s2006-02484-y

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 guarantees the validity of the BCFW construction.

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