Modelling Z → ττ processes in ATLAS with τ- embedded Z → μμ data

Autores
Alconada Verzini, María Josefina; Alonso, Francisco; Arduh, Francisco Anuar; Dova, María Teresa; Monticelli, Fernando Gabriel; Wahlberg, Hernán Pablo; The ATLAS Collaboration
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
This paper describes the concept, technical realisation and validation of a largely datadriven method to model events with Z→tt decays. In Z→μμ events selected from proton-proton collision data recorded at √s=8 TeV with the ATLAS experiment at the LHC in 2012, the Z decay muons are replaced by t leptons from simulated Z→tt decays at the level of reconstructed tracks and calorimeter cells. The t lepton kinematics are derived from the kinematics of the original muons. Thus, only the well-understood decays of the Z boson and t leptons as well as the detector response to the t decay products are obtained from simulation. All other aspects of the event, such as the Z boson and jet kinematics as well as effects from multiple interactions, are given by the actual data. This so-called t-embedding method is particularly relevant for Higgs boson searches and analyses in tt final states, where Z → tt decays constitute a large irreducible background that cannot be obtained directly from data control samples. In this paper, the relevant concepts are discussed based on the implementation used in the ATLAS Standard Model H ! tt analysis of the full datataset recorded during 2011 and 2012.
Facultad de Ciencias Exactas
Materia
Ciencias Exactas
Física
Altas energías
Análisis Estadístico
Simulación
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/3.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/80854

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network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Modelling Z → ττ processes in ATLAS with τ- embedded Z → μμ dataAlconada Verzini, María JosefinaAlonso, FranciscoArduh, Francisco AnuarDova, María TeresaMonticelli, Fernando GabrielWahlberg, Hernán PabloThe ATLAS CollaborationCiencias ExactasFísicaAltas energíasAnálisis EstadísticoSimulaciónThis paper describes the concept, technical realisation and validation of a largely datadriven method to model events with Z→tt decays. In Z→μμ events selected from proton-proton collision data recorded at √s=8 TeV with the ATLAS experiment at the LHC in 2012, the Z decay muons are replaced by t leptons from simulated Z→tt decays at the level of reconstructed tracks and calorimeter cells. The t lepton kinematics are derived from the kinematics of the original muons. Thus, only the well-understood decays of the Z boson and t leptons as well as the detector response to the t decay products are obtained from simulation. All other aspects of the event, such as the Z boson and jet kinematics as well as effects from multiple interactions, are given by the actual data. This so-called t-embedding method is particularly relevant for Higgs boson searches and analyses in tt final states, where Z → tt decays constitute a large irreducible background that cannot be obtained directly from data control samples. In this paper, the relevant concepts are discussed based on the implementation used in the ATLAS Standard Model H ! tt analysis of the full datataset recorded during 2011 and 2012.Facultad de Ciencias Exactas2015-09-15info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/80854enginfo:eu-repo/semantics/altIdentifier/issn/1748-0221info:eu-repo/semantics/altIdentifier/doi/10.1088/1748-0221/10/09/P09018info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/3.0/Creative Commons Attribution 3.0 Unported (CC BY 3.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:14:57Zoai:sedici.unlp.edu.ar:10915/80854Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:14:57.66SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Modelling Z → ττ processes in ATLAS with τ- embedded Z → μμ data
title Modelling Z → ττ processes in ATLAS with τ- embedded Z → μμ data
spellingShingle Modelling Z → ττ processes in ATLAS with τ- embedded Z → μμ data
Alconada Verzini, María Josefina
Ciencias Exactas
Física
Altas energías
Análisis Estadístico
Simulación
title_short Modelling Z → ττ processes in ATLAS with τ- embedded Z → μμ data
title_full Modelling Z → ττ processes in ATLAS with τ- embedded Z → μμ data
title_fullStr Modelling Z → ττ processes in ATLAS with τ- embedded Z → μμ data
title_full_unstemmed Modelling Z → ττ processes in ATLAS with τ- embedded Z → μμ data
title_sort Modelling Z → ττ processes in ATLAS with τ- embedded Z → μμ data
dc.creator.none.fl_str_mv Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author Alconada Verzini, María Josefina
author_facet Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_role author
author2 Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias Exactas
Física
Altas energías
Análisis Estadístico
Simulación
topic Ciencias Exactas
Física
Altas energías
Análisis Estadístico
Simulación
dc.description.none.fl_txt_mv This paper describes the concept, technical realisation and validation of a largely datadriven method to model events with Z→tt decays. In Z→μμ events selected from proton-proton collision data recorded at √s=8 TeV with the ATLAS experiment at the LHC in 2012, the Z decay muons are replaced by t leptons from simulated Z→tt decays at the level of reconstructed tracks and calorimeter cells. The t lepton kinematics are derived from the kinematics of the original muons. Thus, only the well-understood decays of the Z boson and t leptons as well as the detector response to the t decay products are obtained from simulation. All other aspects of the event, such as the Z boson and jet kinematics as well as effects from multiple interactions, are given by the actual data. This so-called t-embedding method is particularly relevant for Higgs boson searches and analyses in tt final states, where Z → tt decays constitute a large irreducible background that cannot be obtained directly from data control samples. In this paper, the relevant concepts are discussed based on the implementation used in the ATLAS Standard Model H ! tt analysis of the full datataset recorded during 2011 and 2012.
Facultad de Ciencias Exactas
description This paper describes the concept, technical realisation and validation of a largely datadriven method to model events with Z→tt decays. In Z→μμ events selected from proton-proton collision data recorded at √s=8 TeV with the ATLAS experiment at the LHC in 2012, the Z decay muons are replaced by t leptons from simulated Z→tt decays at the level of reconstructed tracks and calorimeter cells. The t lepton kinematics are derived from the kinematics of the original muons. Thus, only the well-understood decays of the Z boson and t leptons as well as the detector response to the t decay products are obtained from simulation. All other aspects of the event, such as the Z boson and jet kinematics as well as effects from multiple interactions, are given by the actual data. This so-called t-embedding method is particularly relevant for Higgs boson searches and analyses in tt final states, where Z → tt decays constitute a large irreducible background that cannot be obtained directly from data control samples. In this paper, the relevant concepts are discussed based on the implementation used in the ATLAS Standard Model H ! tt analysis of the full datataset recorded during 2011 and 2012.
publishDate 2015
dc.date.none.fl_str_mv 2015-09-15
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/80854
url http://sedici.unlp.edu.ar/handle/10915/80854
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1748-0221
info:eu-repo/semantics/altIdentifier/doi/10.1088/1748-0221/10/09/P09018
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/3.0/
Creative Commons Attribution 3.0 Unported (CC BY 3.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/3.0/
Creative Commons Attribution 3.0 Unported (CC BY 3.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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