This talk aims to motivate how the birdtrack formalism -- a powerful graphical framework in which one can perform group theoretic calculations-- can be used to analyze and better understand QCD color structures: First, I will motivate how to decompose complicated color structures intosimpler tree-level diagrams and so-called Wigner-6j symbols. We will then explore a particular class of 6j symbols, namely those containing two quark lines, and discover a closed form expression of these 6js through the use of the birdtrack formalism.
The results presented in this talk are based on recent work of S.Keppeler, S. Plätzer, M. Sjödahl and myself (arXiv:2209.15013).
Judith Alcock-Zeilinger (ESI Vienna): Loops, birdtracks and 6js -- exploring QCD color structure
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