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High Energy Physics - Phenomenology

arXiv:0903.0356 (hep-ph)
[Submitted on 2 Mar 2009 (v1), last revised 13 Apr 2009 (this version, v2)]

Title:Feynman Rules for the Rational Part of the QCD 1-loop amplitudes

Authors:P. Draggiotis, M.V. Garzelli, C.G. Papadopoulos, R. Pittau
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Abstract: We compute the complete set of Feynman Rules producing the Rational Terms of kind R_2 needed to perform any QCD 1-loop calculation. We also explicitly check that in order to account for the entire R_2 contribution, even in case of processes with more than four external legs, only up to four-point vertices are needed. Our results are expressed both in the 't Hooft Veltman regularization scheme and in the Four Dimensional Helicity scheme, using explicit color configurations as well as the color connection language.
Comments: 18 pages, 11 figures. Misprints corrected in Appendix A. Version to be published in JHEP
Subjects: High Energy Physics - Phenomenology (hep-ph)
Cite as: arXiv:0903.0356 [hep-ph]
  (or arXiv:0903.0356v2 [hep-ph] for this version)
  https://doi.org/10.48550/arXiv.0903.0356
Journal reference: JHEP 0904:072,2009
Related DOI: https://doi.org/10.1088/1126-6708/2009/04/072

Submission history

From: Roberto Pittau [view email]
[v1] Mon, 2 Mar 2009 18:57:08 UTC (47 KB)
[v2] Mon, 13 Apr 2009 09:22:40 UTC (47 KB)
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