Compact QED Tree-Level Amplitudes From Dressed BCFW Recursion Relations
High Energy Physics - Phenomenology
2014-11-21 v1
Abstract
We construct a modified on-shell BCFW recursion relation to derive compact analytic representations of tree-level amplitudes in QED. As an application, we study the amplitudes of a fermion pair coupling to an arbitrary number of photons and give compact formulae for the NMHV and NNMHV case. We demonstrate that the new recursion relation reduces the growth in complexity with additional photons to be exponential rather than factorial.
Keywords
Cite
@article{arxiv.1005.4939,
title = {Compact QED Tree-Level Amplitudes From Dressed BCFW Recursion Relations},
author = {Simon Badger and Johannes M. Henn},
journal= {arXiv preprint arXiv:1005.4939},
year = {2014}
}
Comments
12 pages, 3 figures