1-2 pm: Remodeling Feynman diagrams with chirality flow

Particle Physics Theory seminar

1-2 pm: Remodeling Feynman diagrams with chirality flow

  • Event time: 12:30pm until 2:30pm
  • Event date: 7th May 2025
  • Speaker: Malin Sjödahl (Lund University)
  • Location: Room 4325B,

Event details

Title: Remodeling Feynman diagrams with chirality flow

Abstract: Since some 70 years, the default method for calculating scattering amplitudes in collider experiments is to use Feynman diagrams. In this talk, I will explore how standard Feynman rules can be significantly simplified by breaking up the Lorentz structure of spin and momentum into smaller objects, the left and right spinors. Building on the spinor helicity formalism, and adapting the method of color flow from the strong force, I show how amplitudes corresponding to Feynman diagrams can be written down in a transparent and intuitive manner.

About Particle Physics Theory seminars

The Particle Physics Theory seminar is a weekly series of talks reflecting the diverse interests of the group. Topics include analytic and numerical calculations based on the Standard Model of elementary particle physics, theories exploring new physics, as well as more formal developments in gauge theories and gravity..

Find out more about Particle Physics Theory seminars.