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Single top-quark production with sherpa

Bothmann, Enrico; Krauss, Frank; Schönherr, Marek

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Authors

Enrico Bothmann



Abstract

We present results at next-to-leading order accuracy in QCD for single top-quark production in the t, s and tW channels at the lhc at a centre-of-mass energy of 8TeV, obtained with the sherpa event generator. We find them in very good agreement with measured values and quantify their theory uncertainties. Uncertainties stemming from the choice between the four- and the five-flavour scheme are found to be typically of the order of 5–10% over large ranges of phase space. We discuss the impact of parton distribution functions, and in particular of the bottom PDF. We also show how different cuts on QCD radiation patterns improve the signal-to-background ratio in realistic fiducial volumes.

Citation

Bothmann, E., Krauss, F., & Schönherr, M. (2018). Single top-quark production with sherpa. The European Physical Journal C, 78(3), Article 220. https://doi.org/10.1140/epjc/s10052-018-5696-1

Journal Article Type Article
Acceptance Date Mar 3, 2018
Online Publication Date Mar 15, 2018
Publication Date Mar 15, 2018
Deposit Date Apr 9, 2018
Publicly Available Date Mar 28, 2024
Journal European Physical Journal C: Particles and Fields
Print ISSN 1434-6044
Electronic ISSN 1434-6052
Publisher SpringerOpen
Peer Reviewed Peer Reviewed
Volume 78
Issue 3
Article Number 220
DOI https://doi.org/10.1140/epjc/s10052-018-5696-1

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Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/

Copyright Statement
© The Author(s) 2018 Open Access This 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





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