Particle Reconstruction at the LHC using Jet Substructure Algorithms

The LHC-era with √ s = 7 TeV allows for a new energy-regime to be accessed. Heavy mass-resonances up to 3.5 TeV/c 2 are in reach. If such heavy particles decay hadronically to much lighter Standard Model particles such as top, Z or W, the jets of the decay products have a sizeable probability to be...

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Detalles Bibliográficos
Autor principal: Rathjens, Denis
Lenguaje:eng
Publicado: 2012
Materias:
Particle physics - Experiment
Acceso en línea:http://cds.cern.ch/record/1446579
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author Rathjens, Denis
author_facet Rathjens, Denis
author_sort Rathjens, Denis
collection CERN
description The LHC-era with √ s = 7 TeV allows for a new energy-regime to be accessed. Heavy mass-resonances up to 3.5 TeV/c 2 are in reach. If such heavy particles decay hadronically to much lighter Standard Model particles such as top, Z or W, the jets of the decay products have a sizeable probability to be merged into a single jet. The result is a boosted jet with substructure. This diploma thesis deals with the phenomena of boosted jets, algorithms to distinguish substructure in these jets from normal hadronization and methods to further improve searches with boosted jets. The impact of such methods is demonstrated in an example analysis of a Z’→ tt¯-scenario on 2 fb −1 of data.
id cern-1446579
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2012
record_format invenio
spelling cern-14465792019-09-30T06:29:59Zhttp://cds.cern.ch/record/1446579engRathjens, DenisParticle Reconstruction at the LHC using Jet Substructure AlgorithmsParticle physics - ExperimentThe LHC-era with √ s = 7 TeV allows for a new energy-regime to be accessed. Heavy mass-resonances up to 3.5 TeV/c 2 are in reach. If such heavy particles decay hadronically to much lighter Standard Model particles such as top, Z or W, the jets of the decay products have a sizeable probability to be merged into a single jet. The result is a boosted jet with substructure. This diploma thesis deals with the phenomena of boosted jets, algorithms to distinguish substructure in these jets from normal hadronization and methods to further improve searches with boosted jets. The impact of such methods is demonstrated in an example analysis of a Z’→ tt¯-scenario on 2 fb −1 of data.CERN-THESIS-2012-026CMS-TS-2012-020oai:cds.cern.ch:14465792012
spellingShingle Particle physics - Experiment
Rathjens, Denis
Particle Reconstruction at the LHC using Jet Substructure Algorithms
title Particle Reconstruction at the LHC using Jet Substructure Algorithms
title_full Particle Reconstruction at the LHC using Jet Substructure Algorithms
title_fullStr Particle Reconstruction at the LHC using Jet Substructure Algorithms
title_full_unstemmed Particle Reconstruction at the LHC using Jet Substructure Algorithms
title_short Particle Reconstruction at the LHC using Jet Substructure Algorithms
title_sort particle reconstruction at the lhc using jet substructure algorithms
topic Particle physics - Experiment
url http://cds.cern.ch/record/1446579
work_keys_str_mv AT rathjensdenis particlereconstructionatthelhcusingjetsubstructurealgorithms

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