Measurement of the top-quark mass in the fully hadronic decay channel from ATLAS data at √s = 7 TeV

The mass of the top quark is measured in a data set corresponding to 4.6 fb<sup>-1</sup> of proton–proton collisions with centre-of-mass energy √ = 7 TeV collected by the ATLAS detector at the LHC. Events consistent with hadronic decays of top–antitop quark pairs with at least six jets i...

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Detalles Bibliográficos
Autores: Alconada Verzini, María Josefina, Alonso, Francisco, Anduaga, Xabier Sebastián, Dova, María Teresa, Monticelli, Fernando Gabriel, Wahlberg, Hernán Pablo, The ATLAS Collaboration
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2015
País:Argentina
Institución:Universidad Nacional de La Plata
Repositorio:SEDICI (UNLP)
Idioma:inglés
OAI Identifier:oai:sedici.unlp.edu.ar:10915/86811
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/86811
Access Level:acceso abierto
Palabra clave:Ciencias Exactas
Física
ATLAS
Fully hadronic
LHC
Proton–proton collisions
Top quark
Top-quark mass
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spelling Measurement of the top-quark mass in the fully hadronic decay channel from ATLAS data at √s = 7 TeVAlconada Verzini, María JosefinaAlonso, FranciscoAnduaga, Xabier SebastiánDova, María TeresaMonticelli, Fernando GabrielWahlberg, Hernán PabloThe ATLAS CollaborationCiencias ExactasFísicaATLASFully hadronicLHCProton–proton collisionsTop quarkTop-quark massThe mass of the top quark is measured in a data set corresponding to 4.6 fb<sup>-1</sup> of proton–proton collisions with centre-of-mass energy √ = 7 TeV collected by the ATLAS detector at the LHC. Events consistent with hadronic decays of top–antitop quark pairs with at least six jets in the final state are selected. The substantial background from multijet production is modelled with data-driven methods that utilise the number of identified b-quark jets and the transverse momentum of the sixth leading jet, which have minimal correlation. The top-quark mass is obtained from template fits to the ratio of three-jet to dijet mass. The three-jet mass is calculated from the three jets produced in a top-quark decay. Using these three jets the dijet mass is obtained from the two jets produced in the W boson decay. The top-quark mass obtained from this fit is thus less sensitive to the uncertainty in the energy measurement of the jets. A binned likelihood fit yields a top-quark mass of mt = 175.1 ± 1.4 (stat.) ± 1.2 (syst.) GeV.La lista completa de autores que integran el documento puede consultarse en el archivo.Instituto de Física La Plata (CONICET- Universidad Nacional de La Plata)2015info: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/10915/86811enginfo:eu-repo/semantics/altIdentifier/issn/1434-6044info:eu-repo/semantics/altIdentifier/doi/10.1140/epjc/s10052-015-3373-1info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2024-05-08T12:54:50Zoai:sedici.unlp.edu.ar:10915/86811Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292024-05-08 12:54:51.186SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Measurement of the top-quark mass in the fully hadronic decay channel from ATLAS data at √s = 7 TeV
title Measurement of the top-quark mass in the fully hadronic decay channel from ATLAS data at √s = 7 TeV
spellingShingle Measurement of the top-quark mass in the fully hadronic decay channel from ATLAS data at √s = 7 TeV
Alconada Verzini, María Josefina
Ciencias Exactas
Física
ATLAS
Fully hadronic
LHC
Proton–proton collisions
Top quark
Top-quark mass
title_short Measurement of the top-quark mass in the fully hadronic decay channel from ATLAS data at √s = 7 TeV
title_full Measurement of the top-quark mass in the fully hadronic decay channel from ATLAS data at √s = 7 TeV
title_fullStr Measurement of the top-quark mass in the fully hadronic decay channel from ATLAS data at √s = 7 TeV
title_full_unstemmed Measurement of the top-quark mass in the fully hadronic decay channel from ATLAS data at √s = 7 TeV
title_sort Measurement of the top-quark mass in the fully hadronic decay channel from ATLAS data at √s = 7 TeV
dc.creator.none.fl_str_mv Alconada Verzini, María Josefina
Alonso, Francisco
Anduaga, Xabier Sebastián
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
Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_role author
author2 Alonso, Francisco
Anduaga, Xabier Sebastián
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
ATLAS
Fully hadronic
LHC
Proton–proton collisions
Top quark
Top-quark mass
topic Ciencias Exactas
Física
ATLAS
Fully hadronic
LHC
Proton–proton collisions
Top quark
Top-quark mass
description The mass of the top quark is measured in a data set corresponding to 4.6 fb<sup>-1</sup> of proton–proton collisions with centre-of-mass energy √ = 7 TeV collected by the ATLAS detector at the LHC. Events consistent with hadronic decays of top–antitop quark pairs with at least six jets in the final state are selected. The substantial background from multijet production is modelled with data-driven methods that utilise the number of identified b-quark jets and the transverse momentum of the sixth leading jet, which have minimal correlation. The top-quark mass is obtained from template fits to the ratio of three-jet to dijet mass. The three-jet mass is calculated from the three jets produced in a top-quark decay. Using these three jets the dijet mass is obtained from the two jets produced in the W boson decay. The top-quark mass obtained from this fit is thus less sensitive to the uncertainty in the energy measurement of the jets. A binned likelihood fit yields a top-quark mass of mt = 175.1 ± 1.4 (stat.) ± 1.2 (syst.) GeV.
publishDate 2015
dc.date.none.fl_str_mv 2015
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/10915/86811
url http://sedici.unlp.edu.ar/handle/10915/86811
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1434-6044
info:eu-repo/semantics/altIdentifier/doi/10.1140/epjc/s10052-015-3373-1
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
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
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (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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