A Brief Look at the Chirality-Flow Formalism for Standard Model Amplitudes

Joakim Alnefjord, Andrew Lifson, Christian Reuschle, Malin Sjodahl

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingpeer-review

Abstract

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.

Original languageEnglish
Title of host publicationThe Ninth Annual Conference on Large Hadron Collider Physics
Subtitle of host publicationLHCP2021
PublisherSissa Medialab srl
DOIs
Publication statusPublished - 2021 Nov 17
Event9th Annual Conference on Large Hadron Collider Physics, LHCP 2021 - Virtual, Online
Duration: 2021 Jun 72021 Jun 12

Publication series

NameProceedings of Science
PublisherSissa Medialab srl
Volume397
ISSN (Print)1824-8039

Conference

Conference9th Annual Conference on Large Hadron Collider Physics, LHCP 2021
CityVirtual, Online
Period2021/06/072021/06/12

Subject classification (UKÄ)

  • Subatomic Physics

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