Implementation of angularly ordered electroweak parton shower in Herwig 7

Masouminia, M.R.; Richardson, P.

doi:10.1007/jhep04(2022)112

Implementation of angularly ordered electroweak parton shower in Herwig 7

Masouminia, M.R.; Richardson, P.

Authors

Dr Aidin Masouminia mohammad.r.masouminia@durham.ac.uk
Post Doctoral Research Associate

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

Abstract

We discuss the necessary steps for implementing an angularly ordered (AO) electroweak (EW) parton shower in Herwig 7 multi-purpose event generator. This includes calculating the helicity-dependent quasi-collinear EW branching functions that correspond to the full range of final-state EW parton shower, in addition to the initial-state EW gauge vector boson radiations. The results are successfully embedded in the AO Herwig 7 shower algorithm and have undergone a set of comprehensive and conclusive performance tests. Furthermore, we have used this EW parton shower algorithm, alongside the existing QCD + QED AO shower, to predict the angular distributions of W± bosons in LHC events with high transverse momentum jets. These results are compared against the explicitly generated underlying events as well as the existing ATLAS data to show the effectiveness of the newly implemented QCD + QED + EW AO parton shower scheme.

Citation

Masouminia, M., & Richardson, P. (2022). Implementation of angularly ordered electroweak parton shower in Herwig 7. Journal of High Energy Physics, 2022(4), Article 112. https://doi.org/10.1007/jhep04%282022%29112

Journal Article Type	Article
Acceptance Date	Mar 31, 2022
Online Publication Date	Apr 20, 2022
Publication Date	2022-04
Deposit Date	Jul 5, 2022
Publicly Available Date	Jul 5, 2022
Journal	Journal of High Energy Physics
Print ISSN	1126-6708
Publisher	Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Peer Reviewed	Peer Reviewed
Volume	2022
Issue	4
Article Number	112
DOI	https://doi.org/10.1007/jhep04%282022%29112

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