  This document reviews the general approach to correcting the process
e+e-->X->ffbar for radiative effects, where X represents an exchanged gauge
boson arising from some new physics. The validity of current methods is
discussed in the context of the differential cross section. To this end the
universality of the dominant QED radiative corrections to such a process is
discussed and an attempt is made to quantify it. The paper aims to justify, as
much as possible, the general approach taken by e+e- collider experiments to
the issue of how to treat the dominant radiative corrections in fitting models
of new physics using inclusive and exclusive cross section measurements. We
conclude that in all but the most pathological of new physics models the
dominant radiative corrections (QED) to the tree level processes of the
standard model can be expected to hold well for new physics. This argument
follows from the fact that the phase space of indirect new physics searches is
generally restrictive (high s' events) in such a way that the factorization of
radiative corrections is expected to hold well and generally universal infrared
corrections should be prevalent.
