The 3-point vertices of QCD are examined at the symmetric subtraction point at one loop in the Landau gauge in the presence of the Gribov mass, $\gamma$. They are expanded in powers of ${\gamma }^2$ up to dimension four in order to determine the order of the leading correction. As well as analyzing the pure Gribov-Zwanziger Lagrangian, its extensions to include localizing ghost masses are also examined. For comparison a pure gluon mass term is also considered.

• Received 30 August 2012

DOI:https://doi.org/10.1103/PhysRevD.86.105029