  One of the many remarkable features of MHV scattering amplitudes is their
conjectured equality to lightlike polygon Wilson loops, which apparently holds
at all orders in perturbation theory as well as non-perturbatively. This
duality is usually expressed in terms of purely four-dimensional quantities
obtained by appropriate subtraction of the IR and UV divergences from
amplitudes and Wilson loops respectively. In this paper we demonstrate, by
explicit calculation, the completely unanticipated fact that the equality
continues to hold at two loops through order epsilon in dimensional
regularization for both the four-particle amplitude and the (parity-even part
of the) five-particle amplitude.
