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Antenna subtraction at NNLO with hadronic initial states: double real radiation for initial-initial configurations with two quark flavours


Boughezal, R; Gehrmann-De Ridder, A; Ritzmann, M (2011). Antenna subtraction at NNLO with hadronic initial states: double real radiation for initial-initial configurations with two quark flavours. Journal of High Energy Physics, 2011(2):98.

Abstract

The antenna subtraction formalism allows to calculate QCD corrections to jet observables. Within this formalism, the subtraction terms are constructed using antenna functions describing all unresolved radiation between a pair of hard radiatior partons. In this paper, we focus on the subtraction terms for double real radiation contributions to jet observables in hadron-hadron collisions evaluated at NNLO. An essential ingredient to these subtraction terms are the four-parton antenna functions with both radiators in the initial state. We outline the construction of the double real subtraction terms, classify all relevant antenna functions and describe their integration over the relevant antenna phase space. For the initial-initial antenna functions with two quark flavours, we derive the phase space master integrals and obtain the integrated antennae.

Abstract

The antenna subtraction formalism allows to calculate QCD corrections to jet observables. Within this formalism, the subtraction terms are constructed using antenna functions describing all unresolved radiation between a pair of hard radiatior partons. In this paper, we focus on the subtraction terms for double real radiation contributions to jet observables in hadron-hadron collisions evaluated at NNLO. An essential ingredient to these subtraction terms are the four-parton antenna functions with both radiators in the initial state. We outline the construction of the double real subtraction terms, classify all relevant antenna functions and describe their integration over the relevant antenna phase space. For the initial-initial antenna functions with two quark flavours, we derive the phase space master integrals and obtain the integrated antennae.

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Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Institute for Computational Science
Dewey Decimal Classification:530 Physics
Scopus Subject Areas:Physical Sciences > Nuclear and High Energy Physics
Language:English
Date:2011
Deposited On:21 Feb 2012 15:11
Last Modified:23 Jan 2022 21:23
Publisher:Institute of Physics Publishing
ISSN:1029-8479
OA Status:Green
Publisher DOI:https://doi.org/10.1007/JHEP02(2011)098
Related URLs:http://arxiv.org/abs/1011.6631
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