Computation of the Soft Anomalous Dimension Matrix in Coordinate Space

Abstract

We complete the coordinate space calculation of the three-parton correlation in the two-loop massive soft anomalous dimension matrix. The full answer agrees with the result found previously by a different approach. The coordinate space treatment of renormalized two-loop gluon exchange diagrams exhibits their color symmetries in a transparent fashion. We compare coordinate space calculations of the soft anomalous dimension matrix with massive and massless eikonal lines and examine its nonuniform limit at absolute threshold.

12 pages, 6 figures, revtex

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Cited by in corpus (6)

• Next-to-next-to-leading soft-gluon corrections for the top quark cross section and transverse momentum distribution
• Threshold resummation for pair production of coloured heavy (s)particles at hadron colliders
• Webs in multiparton scattering using the replica trick
• Diagrammatic Exponentiation for Products of Wilson Lines
• General properties of multiparton webs: proofs from combinatorics
• Infrared Singularities and Soft Gluon Resummation with Massive Partons