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QCD Monte Carlo model tuning studies with CMS data at 13 TeV

Recent QCD Monte Carlo tuning studies done in the CMS Collaboration are presented. Jet kinematics, jet substructure, and underlying event measurements in top quark pair events are discussed. New CMS PYTHIA 8 event tunes exploiting Monte Carlo configurations with consistent parton distribution functi...

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Autor principal: Yazgan, Efe
Lenguaje:eng
Publicado: 2019
Materias:
Acceso en línea:http://cds.cern.ch/record/2681817
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author Yazgan, Efe
author_facet Yazgan, Efe
author_sort Yazgan, Efe
collection CERN
description Recent QCD Monte Carlo tuning studies done in the CMS Collaboration are presented. Jet kinematics, jet substructure, and underlying event measurements in top quark pair events are discussed. New CMS PYTHIA 8 event tunes exploiting Monte Carlo configurations with consistent parton distribution functions and strong coupling parameter values in the matrix element and the parton shower, at leading order (LO), next-to-leading order (NLO) and next-to-next-to-leading order (NNLO) are presented. Predictions from PYTHIA8 obtained with tunes based on NLO or NNLO PDFs are shown to reliably describe minimum-bias and underlying-event data with a similar level of agreement to predictions from tunes using LO PDF sets. The tunes are validated with a range of different measurements and matrix element-parton shower merged configurations.
id cern-2681817
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2019
record_format invenio
spelling cern-26818172019-09-30T06:29:59Zhttp://cds.cern.ch/record/2681817engYazgan, EfeQCD Monte Carlo model tuning studies with CMS data at 13 TeVDetectors and Experimental TechniquesRecent QCD Monte Carlo tuning studies done in the CMS Collaboration are presented. Jet kinematics, jet substructure, and underlying event measurements in top quark pair events are discussed. New CMS PYTHIA 8 event tunes exploiting Monte Carlo configurations with consistent parton distribution functions and strong coupling parameter values in the matrix element and the parton shower, at leading order (LO), next-to-leading order (NLO) and next-to-next-to-leading order (NNLO) are presented. Predictions from PYTHIA8 obtained with tunes based on NLO or NNLO PDFs are shown to reliably describe minimum-bias and underlying-event data with a similar level of agreement to predictions from tunes using LO PDF sets. The tunes are validated with a range of different measurements and matrix element-parton shower merged configurations.CMS-CR-2019-076oai:cds.cern.ch:26818172019-06-04
spellingShingle Detectors and Experimental Techniques
Yazgan, Efe
QCD Monte Carlo model tuning studies with CMS data at 13 TeV
title QCD Monte Carlo model tuning studies with CMS data at 13 TeV
title_full QCD Monte Carlo model tuning studies with CMS data at 13 TeV
title_fullStr QCD Monte Carlo model tuning studies with CMS data at 13 TeV
title_full_unstemmed QCD Monte Carlo model tuning studies with CMS data at 13 TeV
title_short QCD Monte Carlo model tuning studies with CMS data at 13 TeV
title_sort qcd monte carlo model tuning studies with cms data at 13 tev
topic Detectors and Experimental Techniques
url http://cds.cern.ch/record/2681817
work_keys_str_mv AT yazganefe qcdmontecarlomodeltuningstudieswithcmsdataat13tev