Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.13091/4628
Title: CMS pythia 8 colour reconnection tunes based on underlying-event data
Authors: Tumasyan, A.
Adam, W.
Andrejkovic, J.W.
Bergauer, T.
Chatterjee, S.
Damanakis, K.
Akgun, B.
Publisher: Institute for Ionics
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 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 ¯) 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 ¯ events in the semileptonic channel at 13 TeV . © 2023, The Author(s).
URI: https://doi.org/10.1140/epjc/s10052-023-11630-8
https://hdl.handle.net/20.500.13091/4628
ISSN: 1434-6044
Appears in Collections:Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collections

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