Publication
Title
CMS PYTHIA 8 colour reconnection tunes based on underlying-event data
Author
Institution/Organisation
CMS Collaboration
Abstract
New sets of parameter tunes for two of the colour reconnection models, quantum chromodynamics-inspired and gluon-move, implemented in the PYTHIA 8 event generator, are obtained based on the default CMS PYTHIA 8 underlying-event tune, CP5. Measurements sensitive to the underlying event performed by the CMS experiment at centre-of-mass energies root s = 7 and 13 TeV, and by the CDF experiment at 1.96 TeV are used to constrain the parameters of colour reconnection models and multiple-parton interactions simultaneously. The new colour reconnection tunes are compared with various measurements at 1.96, 7, 8, and 13 TeV including measurements of the underlying-event, strange-particle multiplicities, jet substructure observables, jet shapes, and colour flow in top quark pair (t (t) over bar) events. The new tunes are also used to estimate the uncertainty related to colour reconnection modelling in the top quark mass measurement using the decay products of t (t) over bar events in the semileptonic channel at 13 TeV.
Language
English
Source (journal)
European physical journal : C : particles and fields. - Berlin
Publication
Berlin : 2023
ISSN
1434-6044
1434-6052
DOI
10.1140/EPJC/S10052-023-11630-8
Volume/pages
83 :7 (2023) , p. 1-48
Article Reference
587
ISI
001071186900001
Pubmed ID
37440247
Full text (Publisher's DOI)
Full text (open access)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identifier
Creation 04.12.2023
Last edited 08.12.2023
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