Primary Feynman rules to calculate the epsilon-dimensional integrand of any 1-loop amplitude

Abstract

When using dimensional regularization/reduction the epsilon-dimensional numerator of the 1-loop Feynman diagrams gives rise to rational contributions. I list the set of fundamental rules that allow the extraction of such terms at the integrand level in any theory containing scalars, vectors and fermions, such as the electroweak standard model, QCD and SUSY.

19 pages, 14 figures, uses axodraw.sty. Version accepted for publication in JHEP

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