Renormalizability of a quark-gluon model with soft BRST breaking in the infrared region
classification
✦ hep-th
keywords
breakingbrstmodelquark-gluonrenormalizabilitysoftaccountsbehavior
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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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