Measurement of the $Z$ production in association with jets at $\sqrt{s}$ = 8 TeV with the ATLAS detector: background validation, underlying event and fragmentation corrections

The procedure to validate the Monte Carlo predictions for the $t\bar{t}$ background in the context of the $Z$+jets analysis using the data taken in 2012 at $\sqrt{s} =$ 8 TeV with a total integrated luminosity of 20.3 fb$^{-1}$ is presented. Since this is the main background to the analysis, validat...

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Detalles Bibliográficos
Autor principal: Ortega Gama, Felipe Gilberto
Lenguaje:eng
Publicado: 2015
Materias:
Particle Physics - Experiment
Acceso en línea:http://cds.cern.ch/record/2044456
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author Ortega Gama, Felipe Gilberto
author_facet Ortega Gama, Felipe Gilberto
author_sort Ortega Gama, Felipe Gilberto
collection CERN
description The procedure to validate the Monte Carlo predictions for the $t\bar{t}$ background in the context of the $Z$+jets analysis using the data taken in 2012 at $\sqrt{s} =$ 8 TeV with a total integrated luminosity of 20.3 fb$^{-1}$ is presented. Since this is the main background to the analysis, validation is needed to use the Monte Carlo for its description. The generators analyzed were POWHEG interfaced to PYTHIA and MC@NLO. A disagreement in the POWHEG+PYTHIA prediction was found, and in consequence Monte Carlo reweighting was performed. Finally the procedure to get a preliminary sample to compute parton-to-hadron correction factors is presented.
id cern-2044456
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2015
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spelling cern-20444562019-09-30T06:29:59Zhttp://cds.cern.ch/record/2044456engOrtega Gama, Felipe GilbertoMeasurement of the $Z$ production in association with jets at $\sqrt{s}$ = 8 TeV with the ATLAS detector: background validation, underlying event and fragmentation correctionsParticle Physics - ExperimentThe procedure to validate the Monte Carlo predictions for the $t\bar{t}$ background in the context of the $Z$+jets analysis using the data taken in 2012 at $\sqrt{s} =$ 8 TeV with a total integrated luminosity of 20.3 fb$^{-1}$ is presented. Since this is the main background to the analysis, validation is needed to use the Monte Carlo for its description. The generators analyzed were POWHEG interfaced to PYTHIA and MC@NLO. A disagreement in the POWHEG+PYTHIA prediction was found, and in consequence Monte Carlo reweighting was performed. Finally the procedure to get a preliminary sample to compute parton-to-hadron correction factors is presented.CERN-STUDENTS-Note-2015-035oai:cds.cern.ch:20444562015-08-14
spellingShingle Particle Physics - Experiment
Ortega Gama, Felipe Gilberto
Measurement of the $Z$ production in association with jets at $\sqrt{s}$ = 8 TeV with the ATLAS detector: background validation, underlying event and fragmentation corrections
title Measurement of the $Z$ production in association with jets at $\sqrt{s}$ = 8 TeV with the ATLAS detector: background validation, underlying event and fragmentation corrections
title_full Measurement of the $Z$ production in association with jets at $\sqrt{s}$ = 8 TeV with the ATLAS detector: background validation, underlying event and fragmentation corrections
title_fullStr Measurement of the $Z$ production in association with jets at $\sqrt{s}$ = 8 TeV with the ATLAS detector: background validation, underlying event and fragmentation corrections
title_full_unstemmed Measurement of the $Z$ production in association with jets at $\sqrt{s}$ = 8 TeV with the ATLAS detector: background validation, underlying event and fragmentation corrections
title_short Measurement of the $Z$ production in association with jets at $\sqrt{s}$ = 8 TeV with the ATLAS detector: background validation, underlying event and fragmentation corrections
title_sort measurement of the $z$ production in association with jets at $\sqrt{s}$ = 8 tev with the atlas detector: background validation, underlying event and fragmentation corrections
topic Particle Physics - Experiment
url http://cds.cern.ch/record/2044456
work_keys_str_mv AT ortegagamafelipegilberto measurementofthezproductioninassociationwithjetsatsqrts8tevwiththeatlasdetectorbackgroundvalidationunderlyingeventandfragmentationcorrections

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