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The singular behavior of one-loop massive QCD amplitudes with one external soft gluon

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Type
Preprint
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Submission Date
Identifiers
DOI: 10.1016/j.nuclphysb.2011.11.002
arXiv ID: 1107.4384
Source
arXiv
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Abstract

We calculate the one-loop correction to the soft-gluon current with massive fermions. This current is process independent and controls the singular behavior of one-loop massive QCD amplitudes in the limit when one external gluon becomes soft. The result derived in this work is the last missing process-independent ingredient needed for numerical evaluation of observables with massive fermions at hadron colliders at the next-to-next-to-leading order.

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