We use the Local Analytic Sector Subtraction scheme to construct a completely analytic set of expressions implementing a fully local infrared subtraction at NNLO for generic coloured massless final states. The cancellation of all explicit infrared poles appearing in the double-virtual contribution, in the real-virtual correction and in the integrated local infrared counterterms is explicitly verified, and all finite contributions arising from integrated local counterterms are analytically evaluated in terms of ordinary polylogarithms up to weight three. The resulting subtraction formula can readily be implemented in any numerical framework containing the relevant matrix elements up to NNLO.

NNLO subtraction for any massless final state: a complete analytic expression

Gloria Bertolotti;Lorenzo Magnea;Giovanni Pelliccioli;Chiara Signorile-Signorile;Paolo Torrielli;Sandro Uccirati
2023-01-01

Abstract

We use the Local Analytic Sector Subtraction scheme to construct a completely analytic set of expressions implementing a fully local infrared subtraction at NNLO for generic coloured massless final states. The cancellation of all explicit infrared poles appearing in the double-virtual contribution, in the real-virtual correction and in the integrated local infrared counterterms is explicitly verified, and all finite contributions arising from integrated local counterterms are analytically evaluated in terms of ordinary polylogarithms up to weight three. The resulting subtraction formula can readily be implemented in any numerical framework containing the relevant matrix elements up to NNLO.
2023
1
80
http://arxiv.org/abs/2212.11190v1
High Energy Physics - Phenomenology; High Energy Physics - Phenomenology
Gloria Bertolotti; Lorenzo Magnea; Giovanni Pelliccioli; Alessandro Ratti; Chiara Signorile-Signorile; Paolo Torrielli; Sandro Uccirati
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1886951
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