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Factorization and regularization by dimensional reduction

Signer, A.; Stöckinger, D.

Authors

A. Signer

D. Stöckinger



Abstract

Since an old observation by Beenakker et al., the evaluation of QCD processes in dimensional reduction has repeatedly led to terms that seem to violate the QCD factorization theorem. We reconsider the example of the process and show that the factorization problem can be completely resolved. A natural interpretation of the seemingly non-factorizing terms is found, and they are rewritten in a systematic and factorized form. The key to the solution is that the D- and (4−D)-dimensional parts of the 4-dimensional gluon have to be regarded as independent partons.

Citation

Signer, A., & Stöckinger, D. (2005). Factorization and regularization by dimensional reduction. Physics Letters B, 626(1-4), 127-138. https://doi.org/10.1016/j.physletb.2005.08.112

Journal Article Type Article
Publication Date 2005-10
Deposit Date May 6, 2008
Publicly Available Date May 6, 2008
Journal Physics Letters B
Print ISSN 0370-2693
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 626
Issue 1-4
Pages 127-138
DOI https://doi.org/10.1016/j.physletb.2005.08.112
Keywords Gauge-theories, QCD, Amplitudes, Renormalization.

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