Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10723097 | Physics Letters B | 2010 | 9 Pages |
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 N2MHV case. We demonstrate that the new recursion relation reduces the growth in complexity with additional photons to be exponential rather than factorial.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
Simon D. Badger, Johannes M. Henn,