Logarithmic accuracy of angular-ordered parton showers

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

doi:10.1007/jhep04(2020)019

Logarithmic accuracy of angular-ordered parton showers

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

Authors

Gavin Bewick

Silvia Ferrario Ravasio

Professor Peter Richardson peter.richardson@durham.ac.uk
Professor

Michael H. Seymour

Contributors

Silvia Ferrario-ravasio silvia.ferrario-ravasio@durham.ac.uk
Other

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
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

Files

Published Journal Article (1.5 Mb)
PDF

Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/

Copyright Statement
This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.