Fixed-order and merged parton-shower predictions for WW and WWj production at the LHC including NLO QCD and EW corrections

Bräuer, Stephan; Denner, Ansgar; Pellen, Mathieu; Schönherr, Marek; Schumann, Steffen

Abstract

First, we present a combined analysis of pp →μ+vμe−v¯¯¯e and pp →μ+vμe−v¯¯¯ej at next-to-leading order, including both QCD and electroweak corrections. Second, we provide all-order predictions for pp →μ+vμe−v¯¯¯e+jets using merged parton-shower simulations that also include approximate EW effects. A fully inclusive sample for WW production is compared to the fixed-order computations for exclusive zero- and one-jet selections. The various higher-order effects are studied in detail at the level of cross sections and differential distributions for realistic experimental set-ups. Our study confirms that merged predictions are significantly more stable than the fixed-order ones in particular regarding ratios between the two processes.

Citation

Bräuer, S., Denner, A., Pellen, M., Schönherr, M., & Schumann, S. (2020). Fixed-order and merged parton-shower predictions for WW and WWj production at the LHC including NLO QCD and EW corrections. Journal of High Energy Physics, 2020(10), Article 159. https://doi.org/10.1007/jhep10%282020%29159

• Journal Article Type: Article
• Acceptance Date: Sep 22, 2020
• Online Publication Date: Oct 26, 2020
• Publication Date: 2020-10
• Deposit Date: Nov 4, 2020
• Publicly Available Date: Nov 4, 2020
• Journal: Journal of High Energy Physics
• Print ISSN: 1126-6708
• Electronic ISSN: 1029-8479
• Publisher: Scuola Internazionale Superiore di Studi Avanzati (SISSA)
• Peer Reviewed: Peer Reviewed
• Volume: 2020
• Issue: 10
• Article Number: 159
• DOI: https://doi.org/10.1007/jhep10%282020%29159
• Public URL: https://durham-repository.worktribe.com/output/1258413