Measurement of the inclusive and fiducial t¯t production cross-sections in the lepton+jets channel in pp collisions at √s = 8 TeV with the ATLAS detector

Autores
Alconada Verzini, María Josefina; Alonso, Francisco; Arduh, Francisco Anuar; Dova, María Teresa; Hoya, Joaquín; Monticelli, Fernando Gabriel; Wahlberg, Hernán Pablo; The ATLAS Collaboration
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The inclusive and fiducial t¯t production crosssections are measured in the lepton+jets channel using 20.2 fb−1 of proton–proton collision data at a centre-of-mass energy of 8 TeV recorded with the ATLAS detector at the LHC. Major systematic uncertainties due to the modelling of the jet energy scale and b-tagging efficiency are constrained by separating selected events into three disjoint regions. In order to reduce systematic uncertainties in the most important background, the W+jets process is modelled using Z+jets events in a data-driven approach. The inclusive t¯t cross-section is measured with a precision of 5.7% to be σinc(t¯t) = 248.3±0.7 (stat.)±13.4 (syst.)±4.7 (lumi.) pb, assuming a top-quark mass of 172.5 GeV. The result is in agreement with the Standard Model prediction. The crosssection is also measured in a phase space close to that of the selected data. The fiducial cross-section is σfid(t¯t) = 48.8±0.1 (stat.)±2.0 (syst.)±0.9 (lumi.) pb with a precision of 4.5%.
Facultad de Ciencias Exactas
Materia
Ciencias Exactas
Física
top quark
quantum chromodynamics
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/82303

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network_name_str SEDICI (UNLP)
spelling Measurement of the inclusive and fiducial t¯t production cross-sections in the lepton+jets channel in pp collisions at √s = 8 TeV with the ATLAS detectorAlconada Verzini, María JosefinaAlonso, FranciscoArduh, Francisco AnuarDova, María TeresaHoya, JoaquínMonticelli, Fernando GabrielWahlberg, Hernán PabloThe ATLAS CollaborationCiencias ExactasFísicatop quarkquantum chromodynamicsThe inclusive and fiducial t¯t production crosssections are measured in the lepton+jets channel using 20.2 fb−1 of proton–proton collision data at a centre-of-mass energy of 8 TeV recorded with the ATLAS detector at the LHC. Major systematic uncertainties due to the modelling of the jet energy scale and b-tagging efficiency are constrained by separating selected events into three disjoint regions. In order to reduce systematic uncertainties in the most important background, the W+jets process is modelled using Z+jets events in a data-driven approach. The inclusive t¯t cross-section is measured with a precision of 5.7% to be σinc(t¯t) = 248.3±0.7 (stat.)±13.4 (syst.)±4.7 (lumi.) pb, assuming a top-quark mass of 172.5 GeV. The result is in agreement with the Standard Model prediction. The crosssection is also measured in a phase space close to that of the selected data. The fiducial cross-section is σfid(t¯t) = 48.8±0.1 (stat.)±2.0 (syst.)±0.9 (lumi.) pb with a precision of 4.5%.Facultad de Ciencias Exactas2018-06-12info: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/10915/82303enginfo:eu-repo/semantics/altIdentifier/issn/1434-6052info:eu-repo/semantics/altIdentifier/doi/10.1140/epjc/s10052-018-5904-zinfo: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:UNLP2025-09-29T11:15:26Zoai:sedici.unlp.edu.ar:10915/82303Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:15:26.525SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Measurement of the inclusive and fiducial t¯t production cross-sections in the lepton+jets channel in pp collisions at √s = 8 TeV with the ATLAS detector
title Measurement of the inclusive and fiducial t¯t production cross-sections in the lepton+jets channel in pp collisions at √s = 8 TeV with the ATLAS detector
spellingShingle Measurement of the inclusive and fiducial t¯t production cross-sections in the lepton+jets channel in pp collisions at √s = 8 TeV with the ATLAS detector
Alconada Verzini, María Josefina
Ciencias Exactas
Física
top quark
quantum chromodynamics
title_short Measurement of the inclusive and fiducial t¯t production cross-sections in the lepton+jets channel in pp collisions at √s = 8 TeV with the ATLAS detector
title_full Measurement of the inclusive and fiducial t¯t production cross-sections in the lepton+jets channel in pp collisions at √s = 8 TeV with the ATLAS detector
title_fullStr Measurement of the inclusive and fiducial t¯t production cross-sections in the lepton+jets channel in pp collisions at √s = 8 TeV with the ATLAS detector
title_full_unstemmed Measurement of the inclusive and fiducial t¯t production cross-sections in the lepton+jets channel in pp collisions at √s = 8 TeV with the ATLAS detector
title_sort Measurement of the inclusive and fiducial t¯t production cross-sections in the lepton+jets channel in pp collisions at √s = 8 TeV with the ATLAS detector
dc.creator.none.fl_str_mv Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Hoya, Joaquín
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
Hoya, Joaquín
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_role author
author2 Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias Exactas
Física
top quark
quantum chromodynamics
topic Ciencias Exactas
Física
top quark
quantum chromodynamics
dc.description.none.fl_txt_mv The inclusive and fiducial t¯t production crosssections are measured in the lepton+jets channel using 20.2 fb−1 of proton–proton collision data at a centre-of-mass energy of 8 TeV recorded with the ATLAS detector at the LHC. Major systematic uncertainties due to the modelling of the jet energy scale and b-tagging efficiency are constrained by separating selected events into three disjoint regions. In order to reduce systematic uncertainties in the most important background, the W+jets process is modelled using Z+jets events in a data-driven approach. The inclusive t¯t cross-section is measured with a precision of 5.7% to be σinc(t¯t) = 248.3±0.7 (stat.)±13.4 (syst.)±4.7 (lumi.) pb, assuming a top-quark mass of 172.5 GeV. The result is in agreement with the Standard Model prediction. The crosssection is also measured in a phase space close to that of the selected data. The fiducial cross-section is σfid(t¯t) = 48.8±0.1 (stat.)±2.0 (syst.)±0.9 (lumi.) pb with a precision of 4.5%.
Facultad de Ciencias Exactas
description The inclusive and fiducial t¯t production crosssections are measured in the lepton+jets channel using 20.2 fb−1 of proton–proton collision data at a centre-of-mass energy of 8 TeV recorded with the ATLAS detector at the LHC. Major systematic uncertainties due to the modelling of the jet energy scale and b-tagging efficiency are constrained by separating selected events into three disjoint regions. In order to reduce systematic uncertainties in the most important background, the W+jets process is modelled using Z+jets events in a data-driven approach. The inclusive t¯t cross-section is measured with a precision of 5.7% to be σinc(t¯t) = 248.3±0.7 (stat.)±13.4 (syst.)±4.7 (lumi.) pb, assuming a top-quark mass of 172.5 GeV. The result is in agreement with the Standard Model prediction. The crosssection is also measured in a phase space close to that of the selected data. The fiducial cross-section is σfid(t¯t) = 48.8±0.1 (stat.)±2.0 (syst.)±0.9 (lumi.) pb with a precision of 4.5%.
publishDate 2018
dc.date.none.fl_str_mv 2018-06-12
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/10915/82303
url http://sedici.unlp.edu.ar/handle/10915/82303
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1434-6052
info:eu-repo/semantics/altIdentifier/doi/10.1140/epjc/s10052-018-5904-z
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
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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