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Automated NNLL [Formula: see text] NLO resummation for jet-veto cross sections
In electroweak-boson production processes with a jet veto, higher-order corrections are enhanced by logarithms of the veto scale over the invariant mass of the boson system. In this paper, we resum these Sudakov logarithms at next-to-next-to-leading logarithmic accuracy and match our predictions to...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer Berlin Heidelberg
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4423915/ https://www.ncbi.nlm.nih.gov/pubmed/25983650 http://dx.doi.org/10.1140/epjc/s10052-015-3368-y |
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author | Becher, Thomas Frederix, Rikkert Neubert, Matthias Rothen, Lorena |
author_facet | Becher, Thomas Frederix, Rikkert Neubert, Matthias Rothen, Lorena |
author_sort | Becher, Thomas |
collection | PubMed |
description | In electroweak-boson production processes with a jet veto, higher-order corrections are enhanced by logarithms of the veto scale over the invariant mass of the boson system. In this paper, we resum these Sudakov logarithms at next-to-next-to-leading logarithmic accuracy and match our predictions to next-to-leading-order (NLO) fixed-order results. We perform the calculation in an automated way, for arbitrary electroweak final states and in the presence of kinematic cuts on the leptons produced in the decays of the electroweak bosons. The resummation is based on a factorization theorem for the cross sections into hard functions, which encode the virtual corrections to the boson production process, and beam functions, which describe the low-[Formula: see text] emissions collinear to the beams. The one-loop hard functions for arbitrary processes are calculated using the MadGraph5_aMC@NLO framework, while the beam functions are process independent. We perform the resummation for a variety of processes, in particular for [Formula: see text] pair production followed by leptonic decays of the [Formula: see text] bosons. |
format | Online Article Text |
id | pubmed-4423915 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Springer Berlin Heidelberg |
record_format | MEDLINE/PubMed |
spelling | pubmed-44239152015-05-13 Automated NNLL [Formula: see text] NLO resummation for jet-veto cross sections Becher, Thomas Frederix, Rikkert Neubert, Matthias Rothen, Lorena Eur Phys J C Part Fields Regular Article - Theoretical Physics In electroweak-boson production processes with a jet veto, higher-order corrections are enhanced by logarithms of the veto scale over the invariant mass of the boson system. In this paper, we resum these Sudakov logarithms at next-to-next-to-leading logarithmic accuracy and match our predictions to next-to-leading-order (NLO) fixed-order results. We perform the calculation in an automated way, for arbitrary electroweak final states and in the presence of kinematic cuts on the leptons produced in the decays of the electroweak bosons. The resummation is based on a factorization theorem for the cross sections into hard functions, which encode the virtual corrections to the boson production process, and beam functions, which describe the low-[Formula: see text] emissions collinear to the beams. The one-loop hard functions for arbitrary processes are calculated using the MadGraph5_aMC@NLO framework, while the beam functions are process independent. We perform the resummation for a variety of processes, in particular for [Formula: see text] pair production followed by leptonic decays of the [Formula: see text] bosons. Springer Berlin Heidelberg 2015-04-18 2015 /pmc/articles/PMC4423915/ /pubmed/25983650 http://dx.doi.org/10.1140/epjc/s10052-015-3368-y Text en © The Author(s) 2015 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License ( http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Funded by SCOAP3 / License Version CC BY 4.0. |
spellingShingle | Regular Article - Theoretical Physics Becher, Thomas Frederix, Rikkert Neubert, Matthias Rothen, Lorena Automated NNLL [Formula: see text] NLO resummation for jet-veto cross sections |
title | Automated NNLL [Formula: see text] NLO resummation for jet-veto cross sections |
title_full | Automated NNLL [Formula: see text] NLO resummation for jet-veto cross sections |
title_fullStr | Automated NNLL [Formula: see text] NLO resummation for jet-veto cross sections |
title_full_unstemmed | Automated NNLL [Formula: see text] NLO resummation for jet-veto cross sections |
title_short | Automated NNLL [Formula: see text] NLO resummation for jet-veto cross sections |
title_sort | automated nnll [formula: see text] nlo resummation for jet-veto cross sections |
topic | Regular Article - Theoretical Physics |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4423915/ https://www.ncbi.nlm.nih.gov/pubmed/25983650 http://dx.doi.org/10.1140/epjc/s10052-015-3368-y |
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