Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2001-10-25
Phys.Rev. D65 (2002) 105003
Physics
High Energy Physics
High Energy Physics - Phenomenology
22 pages, LaTeX, v2: references added
Scientific paper
10.1103/PhysRevD.65.105003
Supersymmetric Yang-Mills-theories with local gauge coupling have a new type of anomalous breaking, which appears as a breaking of supersymmetry in the Wess-Zumino-gauge. The anomalous breaking generates the two-loop order of the gauge $\beta$-function in terms of the one-loop $\beta$-function and the anomaly coefficient. We determine the anomaly coefficient in the Wess-Zumino-gauge by solving the relevant supersymmetry identities. For this purpose we use a background gauge and show that the anomaly coefficient is uniquely determined by convergent one-loop integrals. When evaluating the one-loop diagrams in the background gauge, it is seen that the anomaly coefficient is determined by the Feynman-gauge value of the one-loop vertex function to the topological term $G \tilde G$ at vanishing momenta.
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