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arXiv · 1807.05145

Four-loop results for the cusp anomalous dimension

R. Brüser·A. G. Grozin·J. M. Henn·M. Stahlhofen
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Abstract

We review the current status of calculations of the HQET field anomalous dimension and the cusp anomalous dimension. In particular, we give the results at 4 loops for the quartic Casimir contribution, and for the full QED case, up to $\varphi^6$ in the small angle expansion. Furthermore, we discuss the leading terms in the anti-parallel lines limit at four loops.

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R. Brüser, A. G. Grozin, J. M. Henn, M. Stahlhofen. 2018-07-13. Four-loop results for the cusp anomalous dimension. https://arxiv.org/abs/1807.05145

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