The chirality-flow formalism
High Energy Physics - Phenomenology
2020-11-03 v2 High Energy Physics - Theory
Abstract
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.
Keywords
Cite
@article{arxiv.2003.05877,
title = {The chirality-flow formalism},
author = {Andrew Lifson and Christian Reuschle and Malin Sjodahl},
journal= {arXiv preprint arXiv:2003.05877},
year = {2020}
}
Comments
44 pages, 3 figures; Version accepted by EPJC. Minor typo corrections