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arXiv · hep-ph/9908467

Infrared divergences and non-lightlike eikonal lines in Sudakov processes

J. C. Collins·F. Hautmann
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Abstract

We propose a method to analyze infrared contributions to non-inclusive processes in QCD. We use the one-loop Sudakov form factor as a working example. Borrowing techniques from renormalization theory, we construct counterterms for the contributions from the soft and collinear regions, and we relate them to eikonal Wilson lines taken along non-lightlike directions.

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J. C. Collins, F. Hautmann. 1999-11-26. Infrared divergences and non-lightlike eikonal lines in Sudakov processes. https://doi.org/10.1016/s0370-2693(99)01384-2

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