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Photo of Andrew Lifson

Andrew Lifson

Doctoral student

Photo of Andrew Lifson

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

Author

  • Joakim Alnefjord
  • Andrew Lifson
  • Christian Reuschle
  • Malin Sjodahl

Summary, in English

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.

Department/s

  • Theoretical Particle Physics

Publishing year

2021-11-17

Language

English

Publication/Series

Proceedings of Science

Volume

397

Document type

Conference paper

Publisher

Sissa Medialab srl

Topic

  • Subatomic Physics

Conference name

9th Annual Conference on Large Hadron Collider Physics, LHCP 2021

Conference date

2021-06-07 - 2021-06-12

Conference place

Virtual, Online

Status

Published

ISBN/ISSN/Other

  • ISSN: 1824-8039