Infrared divergences and non-lightlike eikonal lines in Sudakov processes

Details Infrared divergences and non-lightlike eikonal lines in Sudakov processes Infrared divergences and non-lightlike eikonal lines in Sudakov processes

1999-08-25

arxiv.org/abs/hep-ph/9908467v2

Phys.Lett. B472 (2000) 129-134

Physics

High Energy Physics

High Energy Physics - Phenomenology

Latex, 1 postscript figure. Version 2: presentation improved and typos corrected, results unchanged

Scientific paper

10.1016/S0370-2693(99)01384-2

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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