Uploaded December 2022 | Updated September 2026, 9 hours ago

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In this video, I use the spinor helicity formalism to perform a calculation that I have already done in another video (the calculation of the ultra-relativistic Bhabha differential scattering cross section), for practice and comparison.

Here is my previous video on Bhabha scattering:
youtu.be/iXgpsPYZ7hg

Note: the bosonic normalization I chose to use in the general differential scattering cross section is not arbitrary, apart from not including mass factors. It is the one consistent with the usual spinor-helicity formalism.