In this contribution, we present a detailed study of the effects that decrease the numerical precision in computing QCD radiative corrections to shape distributions at the next-to-next-to-leading order (NNLO) accuracy. For a specific example, we study the contributions to the distribution of soft-dropped heavy-jet mass. We focus on the edge of the phase space where the shape value becomes small and the cross section is dominated by large logarithmic contributions. We use the CoLoRFuLNNLO subtraction method that defines local subtractions in all single and double unresolved regions of the phase space.
ASJC Scopus subject areas
- Physics and Astronomy(all)