Resonance-aware subtraction in the dipole method

Abstract

Abstract 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 $$e^+e^- \rightarrow W^+W^-b{\bar{b}}$$ e+e-→W+W-bb¯ and $$pp \rightarrow W^+W^-j_bj_b$$ pp→W+W-jbjb 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.