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# Author(s):

Bakul Agarwal, Andreas von Manteuffel, Erik Panzer, Robert M. Schabinger

# Abstract:

We calculate the collinear anomalous dimensions in massless four-loop QCD and $\mathcal{N} = 4$ supersymmetric Yang-Mills theory from the infrared poles of vertex form factors. We give very precise numerical approximations and a conjecture for the complete analytic results in both models we consider.

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