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We take a fresh look at Feynman diagrams in the spinor-helicity formalism. Focusing on tree-level massless QED and QCD, we develop a new and conceptually simple graphical method for their calculation. In this pictorial method, which we dub the chirality-flow formalism, Feynman diagrams are directly represented in terms of chirality-flow lines corresponding to spinor inner products, without the need to resort to intermediate algebraic manipulations.
|Journal||European Physical Journal C|
|Publication status||Published - 2020|
Subject classification (UKÄ)
- Subatomic Physics
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- 1 Active
The Chirality-Flow Formalism and Optimising Scattering Amplitudes
Lifson, A., Prestel, S., Frederix, R., Reuschle, C., Mattelaer, O. & Plaetzer, S.
2018/10/15 → 2023/04/26