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MP: Fachverband Theoretische und Mathematische Grundlagen der Physik

MP 7: Quantenfeldtheorie

MP 7.1: Talk

Tuesday, February 28, 2012, 17:15–17:40, ZHG 003

The ABJ anomaly in regularized gauge theories — •Benjamin Lévêque and Christoph Kopper — Centre de Physique Theorique, Ecole polytechnique

We analyse the triangular anomaly in Pauli-Villars regularized axial U(1) gauge theory and within the Standard Model, using well-defined euclidean functional integrals. In axial U(1) gauge theory, we prove the presence of the anomaly and explain its relation to the IR non-analyticity of the fermion triangle. In the electroweak sector of the Standard Model, we confirm the cancelation of the anomaly to one-loop order in the regularized theory. We expose the theoretical tools based on which we aim to extend this result to all loop orders.