Within the framework of local analytic sector subtraction, we present the full analytic integration of double-real and real-virtual local infrared counterterms that enter NNLO QCD computations with any number of massless final-state partons. We show that a careful choice of phase-space mappings leads to simple analytic results, including non-singular terms, that can be obtained with conventional integration techniques.
Magnea, L., Pelliccioli, G., Signorile-Signorile, C., Torrielli, P., Uccirati, S. (2021). Analytic integration of soft and collinear radiation in factorised QCD cross sections at NNLO. JOURNAL OF HIGH ENERGY PHYSICS, 2021(2), 1-50 [10.1007/JHEP02(2021)037].
Analytic integration of soft and collinear radiation in factorised QCD cross sections at NNLO
Pelliccioli G.;
2021
Abstract
Within the framework of local analytic sector subtraction, we present the full analytic integration of double-real and real-virtual local infrared counterterms that enter NNLO QCD computations with any number of massless final-state partons. We show that a careful choice of phase-space mappings leads to simple analytic results, including non-singular terms, that can be obtained with conventional integration techniques.
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