CSW Diagrams and Electroweak Vector Bosons

Abstract

Based on the joined work performed together with Z. Bern, D. Forde, and D. Kosower [1], in this talk it is recalled the (twistor-motivated) diagrammatic formalism describing tree-level scattering amplitudes presented by Cachazo, Svrček and Witten, and it is discussed an extension of the vertices and accompaining rules to the construction of vector-boson currents coupling to an arbitrary source.

Comments: 8 pages, 2 figures, Talk given at the workshop QCD at Work 2005, Conversano (BA), Italy, June 16-20, 2005