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Addendum to: Four-loop cusp anomalous dimension in QED
2019
Journal of High Energy Physics
The cusp anomalous dimension Γ(ϕ, α s ) at Euclidean angles ϕ = π − δ, δ → 0 is closely related to the quark-antiquark potential V ( q, α s ) [1]. Let's define 1
doi:10.1007/jhep01(2019)134
fatcat:emzcob46tvam5kkbadcls3xyou