Amplitudes for High Energy Factorization via BCFW recursion

Abstract

Recently, an extension of the BCFW on-shell recursion relation suitable to compute gauge invariant scattering amplitudes with off-shell particles has been presented for Yang-Mills theories with fermions. In particular, 4- and 5-point amplitudes have been completely worked out. The results are needed for the study of multi-parton scattering at hadron colliders in the framework of High Energy Factorization (HEF).

Comments: 11 pages, 2 figures, talk presented at the XXI Cracow Epiphany Conference on Future High Energy Colliders, 8-10 January 2015