most citedThe full angle-dependence of the four-loop cusp anomalous dimension in QED

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hep-th2020★ 17 cited

The full angle-dependence of the four-loop cusp anomalous dimension in QED

Robin Brüser, Christoph Dlapa, Johannes M. Henn +1

The angle-dependent cusp anomalous dimension governs divergences coming from soft gluon exchanges between heavy particles, such as top quarks. We focus on the matter-dependent cont…