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Practical improvements and merging of Powheg simulations for vector boson production

Alioli, S; Hamilton, K; Re, E; (2011) Practical improvements and merging of Powheg simulations for vector boson production. The Journal of High Energy Physics , 2011 (9) , Article 104. 10.1007/JHEP09(2011)104. Green open access

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Abstract

In this article we generalise POWHEG next-to-leading order parton shower (NLOPS) simulations of vector boson production and vector boson production in association with a single jet, to give matrix element corrected MENLOPS simulations. In so doing we extend and provide, for the first time, an exact and faithful implementation of the MENLOPS formalism in hadronic collisions. We also consider merging the resulting event samples according to a phase space partition defined in terms of an effective jet clustering scale. The merging scale is restricted such that the component generated by the associated production simulation does not impact on the NLO accuracy of inclusive vector boson production observables. The dependence of the predictions on the unphysical merging scale is demonstrated. Comparisons with Tevatron and LHC data are presented.

Type: Article
Title: Practical improvements and merging of Powheg simulations for vector boson production
Open access status: An open access version is available from UCL Discovery
DOI: 10.1007/JHEP09(2011)104
Publisher version: http://dx.doi.org/10.1007/JHEP09(2011)104
Language: English
Additional information: This is an open-access article distributed under the terms of the Creative Commons Attribution License[http://creativecommons.org/licenses/by/4.0/], which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Keywords: Phenomenological Models, Hadronic Colliders, Jets
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/1356094
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