Initial state radiation in the Herwig 7 angular-ordered parton shower

Bewick, Gavin; Ravasio, Silvia Ferrario; Richardson, Peter; Seymour, Michael H.

Abstract

We study the simulation of initial-state radiation in angular-ordered parton showers in order to investigate how different interpretations of the ordering variable affect the logarithmic accuracy of such showers. This also enables us to implement a recoil scheme which is consistent between final-state and initial-state radiation. We present optimal values of the strong coupling and intrinsic transverse momentum to be used in each version of the parton shower, tuned using Z0-boson production at the LHC at 7 TeV. With these tuned showers, we perform a phenomenological study of the Drell-Yan process at several centre-of-mass energies.

Citation

Bewick, G., Ravasio, S. F., Richardson, P., & Seymour, M. H. (2022). Initial state radiation in the Herwig 7 angular-ordered parton shower. Journal of High Energy Physics, 2022(1), Article 26. https://doi.org/10.1007/jhep01%282022%29026

• Journal Article Type: Article
• Acceptance Date: Dec 20, 2021
• Online Publication Date: Jan 7, 2022
• Publication Date: 2022-01
• Deposit Date: Feb 16, 2022
• Publicly Available Date: Feb 16, 2022
• 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: 2022
• Issue: 1
• Article Number: 26
• DOI: https://doi.org/10.1007/jhep01%282022%29026
• Public URL: https://durham-repository.worktribe.com/output/1213727