  We present a technique for infrared subtraction in next-to-leading order QCD
calculations that preserves the virtuality of resonant propagators. The
approach is based on the pseudo-dipole subtraction method proposed by Catani
and Seymour in the context of identified particle production. As the first
applications, we compute the ee > WWbb and pp > WWjbjb cross-section, which are
both dominated by top-quark pair production above the threshold. We compare the
efficiency of our approach with a calculation performed using the standard
dipole subtraction technique.
