# Direct proof of the tree-level scattering amplitude recursion relation in Yang-mills theory.

@article{Britto2005DirectPO,
title={Direct proof of the tree-level scattering amplitude recursion relation in Yang-mills theory.},
author={Ruth Britto and Freddy Cachazo and Bo Feng and Edward Witten},
journal={Physical review letters},
year={2005},
volume={94 18},
pages={
181602
}
}
• Published 7 January 2005
• Physics
• Physical review letters
Recently, by using the known structure of one-loop scattering amplitudes for gluons in Yang-Mills theory, a recursion relation for tree-level scattering amplitudes has been deduced. Here, we give a short and direct proof of this recursion relation based on properties of tree-level amplitudes only.
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