PoS - Proceedings of Science
Volume 397 - The Ninth Annual Conference on Large Hadron Collider Physics (LHCP2021) - Poster Session
A Brief Look at the Chirality-Flow Formalism for Standard Model Amplitudes
J. Alnefjord, A. Lifson*, C. Reuschle and M. Sjodahl
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Pre-published on: October 20, 2021
Published on: November 17, 2021
Inspired by the flow description of su(N) colour calculations, we recently showed how to simplify the spinor-helicity formalism (at the algebra level two copies of complexified su(2)) by treating each Weyl spinor as part of a flow line with definite chirality and momentum. This formalism, dubbed the chirality-flow formalism, eliminates all non-trivial algebra from tree-level spinor-helicity calculations, thus allowing the shortest possible route from Feynman diagrams to complex numbers (spinor inner products). In this presentation, we briefly introduce the main features of this method and show some examples.
DOI: https://doi.org/10.22323/1.397.0160
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