Infrared Regularization of Yang-Mills Theories

Abstract

We introduce an infrared regulator in Yang--Mills theories under the form of a mass term for the nonabelian fields. We show that the resulting action, built in a covariant linear gauge, is multiplicatively renormalizable by proving the validity at all orders of the Slavnov identity defining the theory.

Comments: final version to appear in Mod.Phys.Lett.A. 8 pages + cover, plain LaTeX