CMS PYTHIA 8 colour reconnection tunes based on underlying-event data

CMS Collaboration

doi:10.1140/epjc/s10052-023-11630-8

CMS PYTHIA 8 colour reconnection tunes based on underlying-event data

CMS Collaboration

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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 $\sqrt{s}$ = 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 ($\mathrm{t\bar{t}}$) 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 $\mathrm{t\bar{t}}$ events in the semileptonic channel at 13 TeV.

Original language	English
Article number	587
Number of pages	48
Journal	Eur. Phys. J. C
Volume	83
Issue number	7
DOIs	https://doi.org/10.1140/epjc/s10052-023-11630-8
Publication status	Published - 10 Jul 2023

Bibliographical note

Replaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/GEN-17-002 (CMS Public Pages)

Keywords

hep-ex
hep-ph

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10.1140/epjc/s10052-023-11630-8Licence: CC BY

s10052-023-11630-8Final published version, 5.5 MBLicence: CC BY

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@article{f5497bfcb3d64d5e8fcc283e8de676bc,

title = "CMS PYTHIA 8 colour reconnection tunes based on underlying-event data",

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 \$\textbackslash{}sqrt\{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 (\$\textbackslash{}mathrm\{t\textbackslash{}bar\{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 \$\textbackslash{}mathrm\{t\textbackslash{}bar\{t\}\}\$ events in the semileptonic channel at 13 TeV. ",

keywords = "hep-ex, hep-ph",

author = "\{CMS Collaboration\} and Bols, \{Emil S{\o}rensen\} and Jorgen D'Hondt and Martin Delcourt and \{El Faham\}, Hesham and Steven Lowette and Seth Moortgat and Alexander Morton and Denise M{\"u}ller and Sahasransu, \{Abanti Ranadhir\} and Stefaan Tavernier and \{Van Doninck\}, Walter and David Vannerom and Nicolas Stylianou",

note = "Replaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/GEN-17-002 (CMS Public Pages)",

year = "2023",

month = jul,

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doi = "10.1140/epjc/s10052-023-11630-8",

language = "English",

volume = "83",

journal = "Eur. Phys. J. C",

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AU - CMS Collaboration

AU - Bols, Emil Sørensen

AU - D'Hondt, Jorgen

AU - Delcourt, Martin

AU - El Faham, Hesham

AU - Lowette, Steven

AU - Moortgat, Seth

AU - Morton, Alexander

AU - Müller, Denise

AU - Sahasransu, Abanti Ranadhir

AU - Tavernier, Stefaan

AU - Van Doninck, Walter

AU - Vannerom, David

AU - Stylianou, Nicolas

N1 - Replaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/GEN-17-002 (CMS Public Pages)

PY - 2023/7/10

Y1 - 2023/7/10

N2 - 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 $\sqrt{s}$ = 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 ($\mathrm{t\bar{t}}$) 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 $\mathrm{t\bar{t}}$ events in the semileptonic channel at 13 TeV.

AB - 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 $\sqrt{s}$ = 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 ($\mathrm{t\bar{t}}$) 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 $\mathrm{t\bar{t}}$ events in the semileptonic channel at 13 TeV.

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KW - hep-ph

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JO - Eur. Phys. J. C

JF - Eur. Phys. J. C

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ER -

CMS PYTHIA 8 colour reconnection tunes based on underlying-event data

Abstract

Bibliographical note

Keywords

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EU674: iSAS: Innovate for Sustainable Accelerating Systems

FWOAL1078: Probing the Charm-Higgs Yukawa at the LHC.

iBOF/23/074: Unlocking the charm-Higgs coupling at the LHC

Cite this

CMS PYTHIA 8 colour reconnection tunes based on underlying-event data

Abstract

Bibliographical note

Keywords

Access to Document

Handle.net

Other files and links

Fingerprint

Projects

EU674: iSAS: Innovate for Sustainable Accelerating Systems

FWOAL1078: Probing the Charm-Higgs Yukawa at the LHC.

iBOF/23/074: Unlocking the charm-Higgs coupling at the LHC

Cite this