Dr. Malin Sjödahl

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. Thus, 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.