There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.
Abstract
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.