Lepton pair production at NNLO in QED with EW effects

Kollatzsch, Sophie; Ulrich, Yannick

Abstract

We present a fully differential calculation of lepton pair production, taking into account the dominant next-to-next-to-leading order QED corrections as well as next-to-leading order electroweak and polarisation effects. We include all lepton masses, hard photon emission, as well as non-perturbative hadronic corrections. The corresponding matrix elements are implemented in the Monte Carlo framework McMule. In order to obtain a numerically stable implementation, we extend next-to-soft stabilisation, a universal technique based on a next-to-leading-power expansion, to calculations with polarised leptons. As an example, we show results tailored to the Belle II detector with the current setup as well as a potential future configuration that includes polarised beams.

Citation

Kollatzsch, S., & Ulrich, Y. (2023). Lepton pair production at NNLO in QED with EW effects. SciPost Physics, 15(3), Article 104. https://doi.org/10.21468/scipostphys.15.3.104

• Journal Article Type: Article
• Acceptance Date: Jul 20, 2023
• Online Publication Date: Sep 20, 2023
• Publication Date: Sep 20, 2023
• Deposit Date: Feb 19, 2024
• Publicly Available Date: Feb 19, 2024
• Journal: SciPost Physics
• Print ISSN: 2542-4653
• Electronic ISSN: 2542-4653
• Publisher: SciPost
• Peer Reviewed: Peer Reviewed
• Volume: 15
• Issue: 3
• Article Number: 104
• DOI: https://doi.org/10.21468/scipostphys.15.3.104
• Keywords: General Physics and Astronomy
• Public URL: https://durham-repository.worktribe.com/output/2269866