Conformal Symmetry and the Chiral Anomaly

Details Conformal Symmetry and the Chiral Anomaly Conformal Symmetry and the Chiral Anomaly

1996-11-19

arxiv.org/abs/hep-th/9611133v1

Phys.Rev.D55:6522-6537,1997

Physics

High Energy Physics

High Energy Physics - Theory

23 pages, LaTeX, three embedded postscript images

Scientific paper

10.1103/PhysRevD.55.6522

Two-loop contributions to the anomalous correlation function of three chiral currents are calculated by a method based on the conformal properties of massless field theories. The method was previously applied to virtual photon diagrams in quantum electrodynamics, and it is extended here to diagrams with scalars and chiral spinors in the abelian Higgs model and in the SU(3)xSU(2)xU(1) standard model. In each case there are nonvanishing contributions to the gauge current correlator from self-energy insertions, vertex insertions and nonplanar diagrams, but their sum exactly vanishes. The two-loop contribution to the anomaly therefore also vanishes, in agreement with the Adler-Bardeen theorem. An application of the method to the correlator of the R and Konishi axial currents in supersymmetric gauge theories which was reported in hep-th/9608125 is discussed here. The net two-loop contribution to this correlator also vanishes.

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