Volume 303 - Loops and Legs in Quantum Field Theory (LL2018) - Parallel 2
Four-loop results for the cusp anomalous dimension
R. Brüser, A.G. Grozin,* J.M. Henn, M. Stahlhofen
*corresponding author
Full text: pdf
Published on: 2018 October 02
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.
DOI: https://doi.org/10.22323/1.303.0018
Open Access