Logarithmic accuracy of angular-ordered parton showers

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

Abstract

We study the logarithmic accuracy of angular-ordered parton showers by considering the singular limits of multiple emission matrix elements. This allows us to consider different choices for the evolution variable and propose a new choice which has both the correct logarithmic behaviour and improved performance away from the singular regions. In particular the description of e+e− event shapes in the non-logarithmic region is significantly improved.

Citation

Bewick, G., Ravasio, S. F., Richardson, P., & Seymour, M. H. (2020). Logarithmic accuracy of angular-ordered parton showers. Journal of High Energy Physics, 2020(4), Article 19. https://doi.org/10.1007/jhep04%282020%29019

• Journal Article Type: Article
• Acceptance Date: Mar 18, 2020
• Online Publication Date: Apr 3, 2020
• Publication Date: Apr 30, 2020
• Deposit Date: Apr 23, 2020
• Publicly Available Date: Apr 23, 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: 4
• Article Number: 19
• DOI: https://doi.org/10.1007/jhep04%282020%29019
• Public URL: https://durham-repository.worktribe.com/output/1265644