# Structure of two-loop SMEFT anomalous dimensions via on-shell methods

@article{Bern2020StructureOT, title={Structure of two-loop SMEFT anomalous dimensions via on-shell methods}, author={Z. Bern and Julio Parra-Martinez and Eric T. Sawyer}, journal={arXiv: High Energy Physics - Phenomenology}, year={2020} }

We describe on-shell methods for computing one- and two-loop anomalous dimensions in the context of effective field theories containing higher-dimension operators. We also summarize methods for computing one-loop amplitudes, which are used as inputs to the computation of two-loop anomalous dimensions, and we explain how the structure of rational terms and judicious renormalization scheme choices can lead to additional vanishing terms in the anomalous dimension matrix at two loops. We describe… CONTINUE READING

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