Signer, A. and Stöckinger, D. (2005) 'Factorization and regularization by dimensional reduction.', Physics letters B., 626 (1-4). pp. 127-138.
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.
|Keywords:||Gauge-theories, QCD, Amplitudes, Renormalization.|
|Full text:||PDF - Other (195Kb)|
|Publisher Web site:||http://dx.doi.org/10.1016/j.physletb.2005.08.112|
|Record Created:||06 May 2008|
|Last Modified:||09 Aug 2011 12:00|
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