Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2002-12-18
Eur.Phys.J.C30:525-536,2003
Physics
High Energy Physics
High Energy Physics - Theory
12 pages, feynmp.sty. References added, minor typos corrected and clarified the scope of the paper in the introduction, publis
Scientific paper
10.1140/epjc/s2003-01301-7
We study the cancellations among Feynman diagrams that implement the Ward and Slavnov-Taylor identities corresponding to the conserved supersymmetry current in supersymmetric quantum field theories. In particular, we show that the Faddeev-Popov ghosts of gauge- and supersymmetries never decouple from the physical fields, even for abelian gauge groups. The supersymmetric Slavnov-Taylor identities provide efficient consistency checks for automatized calculations and can verify the supersymmetry of Feynman rules and the numerical stability of phenomenological predictions simultaneously.
Ohl Thorsten
Reuter Juergen
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