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arXiv · hep-ph/9208209

Breakdown of Dimensional Regularization in the Sudakov Problem

J. C. Collins·F. V. Tkachov
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Abstract

An explicit example is presented (a one-loop triangle graph) where dimensional regularization fails to regulate the infra-red singularities that emerge at intermediate steps of studying large-$Q^2$ Sudakov factorization. The mathematical nature of the phenomenon is explained within the framework of the theory of the $As$-operation.

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J. C. Collins, F. V. Tkachov. 1992-08-05. Breakdown of Dimensional Regularization in the Sudakov Problem. https://doi.org/10.1016/0370-2693(92)91541-g

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