Position-space cuts for Wilson line correlators

Open Access
Authors
Publication date 07-2015
Journal The Journal of High Energy Physics
Article number 83
Volume | Issue number 2015 | 7
Number of pages 55
Organisations
  • Faculty of Science (FNWI) - Institute of Physics (IoP) - Institute for Theoretical Physics Amsterdam (ITFA)
Abstract
We further develop the formalism for taking position-space cuts of eikonal diagrams introduced in ref. [1]. These cuts are applied directly to the position-space representation of any such diagram and compute its discontinuity to the leading order in the dimensional regulator. We provide algorithms for computing the position-space cuts and apply them to several two- and three-loop eikonal diagrams, finding agreement with results previously obtained in the literature. We discuss a non-trivial interplay between the cutting prescription and non-Abelian exponentiation. We furthermore discuss the relation of the imaginary part of the cusp anomalous dimension to the static interquark potential.
Document type Article
Language English
Published at https://doi.org/10.1007/JHEP07(2015)083
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