Renormalizability of a quark-gluon model with soft BRST breaking in the infrared region

Details Renormalizability of a quark-gluon model with soft BRST breaking in the infrared region Renormalizability of a quark-gluon model with soft BRST breaking in the infrared region

2009-01-20

arxiv.org/abs/0901.3158v2

Eur.Phys.J.C66:451-464,2010

Physics

High Energy Physics

High Energy Physics - Theory

20 pages, no figures. Preprint number added in v2:

Scientific paper

10.1140/epjc/s10052-010-1250-5

We prove the renormalizability of a quark-gluon model with a soft breaking of
the BRST symmetry, which accounts for the modification of the large distance
behavior of the quark and gluon correlation functions. The proof is valid to
all orders of perturbation theory, by making use of softly broken Ward
identities.

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