TECHNIQUE FOR DERIVING FEYNMAN-INTEGRALS IN AXIAL-TYPE GAUGES

Employing the n(mu) prescription for axial-type gauges, and working i n the unified-gauge formalism defined by n(mu) and the null vector F-m u, we develop a simple technique for evaluating higher-rank integrals from known lower-rank integrals. Based on partial differentiation and implementation of an auxiliary constraint condition, the technique is applicable to a wide variety of integrals containing either single, do uble or triple spurious poles. We illustrate our procedure with severa l examples. There are strong indications that the new technique is als o capable of generating the finite parts of axial-type integrals.