A general algorithm to build real-radiation antenna functions for higher-order calculations
Open access
Date
2023-06Type
- Journal Article
Abstract
The antenna subtraction method has been successfully applied to a wide range of processes relevant for the Large Hadron Collider at next-to-next-to-leading order in αs (NNLO). We propose an algorithm for building antenna functions for any number of real emissions from an identified pair of hard radiator partons directly from a specified list of unresolved limits. We use the algorithm to explicitly build all single- and double-real QCD antenna functions and compare them to the previous antenna functions, which were extracted from matrix elements. The improved antenna functions should be more easily applicable to NNLO subtraction terms. Finally, we match the integration of the antenna functions over the final-final unresolved phase space to the previous incarnation, serving as an independent check on our results. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000618854Publication status
publishedExternal links
Journal / series
Journal of High Energy PhysicsVolume
Pages / Article No.
Publisher
SpringerSubject
Higher-Order Perturbative Calculations; Parton ShowerOrganisational unit
08833 - Gehrmann-De Ridder, Aude (Tit.-Prof.)
Funding
197130 - Computing flavour-sensitive observables at high energy colliders (SNF)
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