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A new set of CMS tunes for novel colour reconnection models in PYTHIA8 based on underlying-event data

New sets of parameter tunes for two of the colour reconnection models implemented in the PYTHIA8 event generator, QCD-inspired and gluon move, are obtained based on the default CMS PYTHIA8 underlying-event tune, CP5. Measurements sensitive to underlying-event performed at $\sqrt{s}=$1.96, 7, and 13$...

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Autor principal: CMS Collaboration
Publicado: 2021
Materias:
Acceso en línea:http://cds.cern.ch/record/2780467
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author CMS Collaboration
author_facet CMS Collaboration
author_sort CMS Collaboration
collection CERN
description New sets of parameter tunes for two of the colour reconnection models implemented in the PYTHIA8 event generator, QCD-inspired and gluon move, are obtained based on the default CMS PYTHIA8 underlying-event tune, CP5. Measurements sensitive to underlying-event performed at $\sqrt{s}=$1.96, 7, and 13$~\mathrm{TeV}$ are used to constrain the parameters of the colour reconnection models and the multiple parton interactions simultaneously. The new colour reconnection tunes are compared to various measurements at a centre-of-mass energy of 1.96, 7, 8, and 13$~\mathrm{TeV}$ including measurements of underlying event, strange particle multiplicities, jet substructure observables, hadron ratios, jet shapes and colour flow in top quark pair events, and top quark mass. The new colour reconnection tunes can be used to estimate systematic uncertainties related to colour reconnection modelling.
id cern-2780467
institution Organización Europea para la Investigación Nuclear
publishDate 2021
record_format invenio
spelling cern-27804672022-05-06T11:41:15Zhttp://cds.cern.ch/record/2780467CMS CollaborationA new set of CMS tunes for novel colour reconnection models in PYTHIA8 based on underlying-event dataParticle Physics - ExperimentNew sets of parameter tunes for two of the colour reconnection models implemented in the PYTHIA8 event generator, QCD-inspired and gluon move, are obtained based on the default CMS PYTHIA8 underlying-event tune, CP5. Measurements sensitive to underlying-event performed at $\sqrt{s}=$1.96, 7, and 13$~\mathrm{TeV}$ are used to constrain the parameters of the colour reconnection models and the multiple parton interactions simultaneously. The new colour reconnection tunes are compared to various measurements at a centre-of-mass energy of 1.96, 7, 8, and 13$~\mathrm{TeV}$ including measurements of underlying event, strange particle multiplicities, jet substructure observables, hadron ratios, jet shapes and colour flow in top quark pair events, and top quark mass. The new colour reconnection tunes can be used to estimate systematic uncertainties related to colour reconnection modelling.CMS-PAS-GEN-17-002oai:cds.cern.ch:27804672021
spellingShingle Particle Physics - Experiment
CMS Collaboration
A new set of CMS tunes for novel colour reconnection models in PYTHIA8 based on underlying-event data
title A new set of CMS tunes for novel colour reconnection models in PYTHIA8 based on underlying-event data
title_full A new set of CMS tunes for novel colour reconnection models in PYTHIA8 based on underlying-event data
title_fullStr A new set of CMS tunes for novel colour reconnection models in PYTHIA8 based on underlying-event data
title_full_unstemmed A new set of CMS tunes for novel colour reconnection models in PYTHIA8 based on underlying-event data
title_short A new set of CMS tunes for novel colour reconnection models in PYTHIA8 based on underlying-event data
title_sort new set of cms tunes for novel colour reconnection models in pythia8 based on underlying-event data
topic Particle Physics - Experiment
url http://cds.cern.ch/record/2780467
work_keys_str_mv AT cmscollaboration anewsetofcmstunesfornovelcolourreconnectionmodelsinpythia8basedonunderlyingeventdata
AT cmscollaboration newsetofcmstunesfornovelcolourreconnectionmodelsinpythia8basedonunderlyingeventdata