We present a new method for the local subtraction of infrared divergences at next-to-next-to-leading order (NNLO) in QCD, for generic infrared-safe observables. Our method attempts to conjugate the minimal local counterterm structure arising from a sector partition of the radiation phase space with the simplifications following from analytic integration of the counterterms. In this first implementation, the method applies to final-state massless particles. We show how our method compactly organises infrared subtraction at NLO, we deduce in detail the general structure of the subtraction terms at NNLO, and we provide a proof of principle with a complete application to a simple process at NNLO.
@article{arxiv.1806.09570,
title = {Local Analytic Sector Subtraction at NNLO},
author = {Lorenzo Magnea and Ezio Maina and Giovanni Pelliccioli and Chiara Signorile-Signorile and Paolo Torrielli and Sandro Uccirati},
journal= {arXiv preprint arXiv:1806.09570},
year = {2019}
}