The Role of ${\gamma }_5$ in Dimensional Regularization

Abstract

We discuss the consistency of a new \gf -scheme with renormalization. In particular we study the power-counting behaviour of multiloop graphs to prove its consistency. As a side effect we obtain a short proof of the Adler-Bardeen theorem. Further we show that this \gf-scheme does not modify the BRST identities at any loop orders in contrast to BM type schemes.

Comments: 21 pages (one .ps file including all figures), UTAS-PHYS-94-01