Speaker
Description
In this talk, we present the next-to-next-to-leading-order (NNLO) subtraction formula for local cancellation of infrared (IR) divergences for final-state radiation in massless QCD, applying to generic IR-safe observables. Such general and automated algorithm has been developed within the framework of Local analytic sector subtraction. We explicitly show the features of the method and investigate a comprehensive treatment of singularities, which is ultimately necessary to ensure the locality of the subtraction. After performing the counterterms integration, we analytically verify the cancellation of the explicit $\epsilon$ poles coming from the double-virtual contribution for processes with an arbitrary number of final-state partons, thus obtaining as a final result a compact (as well as analytic) finite remainder and a formula suitable for direct numerical implementation, paving the way to further validations and the production of relevant phenomenological results.
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