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arXiv · 1806.09570

Local Analytic Sector Subtraction at NNLO

Lorenzo Magnea·Ezio Maina·Giovanni Pelliccioli·Chiara Signorile-Signorile·Paolo Torrielli·Sandro Uccirati
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Abstract

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.

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Lorenzo Magnea, Ezio Maina, Giovanni Pelliccioli, Chiara Signorile-Signorile, Paolo Torrielli, Sandro Uccirati. 2018-06-25. Local Analytic Sector Subtraction at NNLO. https://doi.org/10.1007/jhep12(2018)107

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