Computation of the Soft Anomalous Dimension Matrix in Coordinate Space

Physics – High Energy Physics – High Energy Physics - Phenomenology

Scientific paper

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12 pages, 6 figures, revtex

Scientific paper

10.1103/PhysRevD.82.034020

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.

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