Infrared structure at NNLO using antenna subtraction
By J. Currie, E. Glover, S. Wells. 2013
224 citations recorded by the source corpus.
A bstractWe consider the infrared structure of hadron-hadron collisions at next-to-next-to leading order using the antenna subtraction method. The general form of the subtraction terms is presented for double real, real-virtual and double virtual contributions. At NLO and NNLO it is shown that the virtual and double virtual subtraction terms can be written in terms of integrated dipoles, formed by systematically combining the mass factorisation contributions and integrated antenna functions. The integrated dipoles describing ℓ unresolved partons, denoted $ J_2^{{\left( \ell \right)}} $, are related to Catani’s IR singularity operators, $ I_{ij}^{{\left( \ell \right)}}\left( \in \right) $. It is shown that the IR pole structure of the virtual and double virtual contributions can be written as a sum over integrated dipoles within the antenna subtraction formalism and the master expressions analogous to Catani’s one- and two-loop factorisation formulae are derived. To demonstrate the techniques described in this paper, we apply antenna subtraction to the production of two gluon jets via quark-antiquark scattering at NLO and NNLO. Double real, real-virtual and double virtual subtraction terms are explicitly derived for the leading colour NNLO contribution.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/f5e755edd3b74d808639b922b7fbee30d48c8131
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In Nuclear and High Energy Physics
- Atlas Collaboration
- Cms Collaboration
- Gudrun Heinrich
- M. Schönherr
- Ansgar Denner
- Stefan Dittmaier
- F. Krauss
- S. Höche
Citations in the corpus
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- N-jettiness subtractions for NNLO QCD calculations (2015, methodology): “Over the past decade enormous effort has been devoted to extend such local subtraction methods to NNLO using different approaches [7–38].”
- Les Houches 2015: Physics at TeV Colliders Standard Model Working Group Report (2016, background): “– Antenna subtraction [73,74]: Analytically integrated counter-terms for hadronic initial and final states.”
- Electroweak radiative corrections for collider physics (2019, methodology): “At NNLO, several approaches [384–390], some of them based on numerical procedures, have been suggested and successfully used in QCD calculations.”
- Collider physics at the precision frontier (2020, background): “Antenna subtraction [948, 949] led to the first NNLO calculation of e+e− → 3 jets [950], of single-jet Inclusive production [394], of di-jet production [395] in”
- Les Houches 2017: Physics at TeV Colliders Standard Model Working Group Report (2017, background): “– Antenna subtraction [125,126]: Analytically integrated counter-terms, applicable to hadronic initial and final states.”