Main Image
Volume 296 - XII Modave Summer School in Mathematical Physics (Modave2016) - XII Modave Summer School in Mathematical Physics - 12-16 September 2016
The 4D on-shell 3-point amplitude in spinor-helicity formalism and BCFW recursion relations
A. Marzolla
Full text: pdf
Pre-published on: 2017 May 17
Published on: 2017 July 17
Lecture notes on Poincaré-invariant scattering amplitudes and tree-level recursion relations in spinor-helicity formalism. We illustrate the non-perturbative constraints imposed over on-shell amplitudes by the Lorentz Little Group, and review how they completely fix the three-point amplitude involving either massless or massive particles. Then we present an introduction to tree-level BCFW recursion relations, and some applications for massless scattering, where the derived three-point amplitudes are employed.
Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.