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arXiv · 1005.4646

Computation of the Soft Anomalous Dimension Matrix in Coordinate Space

Alexander Mitov·George Sterman·Ilmo Sung
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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.

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Alexander Mitov, George Sterman, Ilmo Sung. 2010-05-25. Computation of the Soft Anomalous Dimension Matrix in Coordinate Space. https://doi.org/10.1103/physrevd.82.034020

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