ANALYTIC EVALUATION OF LANDSHOFF TYPE INTEGRALS FOR AXIAL GAUGES

It is demonstrated that it is possible to expand Feynman Integrals in axial gauges to arbitrary orders in a small mass-like parameter, and i n so doing, replace ad hoc prescriptions by the limit of a gauge-fixin g term imposed within the Lagrangian. Both the Landshoff and Principle Value prescriptions are related to the canonical form of the integral s and the expansions associated with them, and the values for a subset of the Landshoff Integrals are tabulated to second order in the mass- like parameter. The expansion technique relies on the method of Analyt ic Regularization, which includes Dimensional Regularization as one of a number of limiting cases.