Single top-quark production with sherpa

Bothmann, Enrico; Krauss, Frank; Schönherr, Marek

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: Apr 9, 2018
• 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
• Public URL: https://durham-repository.worktribe.com/output/1335928