Simultaneous measurements of the tt¯, W<sup>+</sup>W<sup>-</sup>, and Z/γ* →ττ production cross-sections in pp collisions at √s = 7 TeV with the ATLAS detector

Autores
Alconada Verzini, María Josefina; Alonso, Francisco; Anduaga, Xabier Sebastián; 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
Simultaneous measurements of the tt¯, W+W-, and Z/γ*→ττ production cross-sections using an integrated luminosity of 4.6 fb-1 of pp collisions at √s = 7 TeV collected by the ATLAS detector at the LHC are presented. Events are selected with two high transverse momentum leptons consisting of an oppositely charged electron and muon pair. The three processes are separated using the distributions of the missing transverse momentum of events with zero and greater than zero jet multiplicities. Measurements of the fiducial cross-section are presented along with results that quantify for the first time the underlying correlations in the predicted and measured cross-sections due to proton parton distribution functions. These results indicate that the correlated next-to-leading-order predictions for tt¯ and Z/γ*→ττ underestimate the data, while those at next-to-next-to-leading-order generally describe the data well. The full cross-sections are measured to be σ(tt¯)=181.2±2.8+9.7-9.5±3.3±3.3 pb, σ(W+W-)=53.3±2.7+7.3-8.0±1.0±0.5 pb, and σ(Z/γ*→ττ)=1174±24+72-87±21±9 pb, where the cited uncertainties are due to statistics, systematic effects, luminosity and the LHC beam energy measurement, respectively. The W+W- measurement includes the small contribution from Higgs boson decays, H→W+W-.
La lista completa de autores que integran el documento puede consultarse en el archivo.
Facultad de Ciencias Exactas
Instituto de Física La Plata
Materia
Ciencias Exactas
Física
proton-proton collisions
ATLAS detector
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:10915/86837

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network_name_str SEDICI (UNLP)
spelling Simultaneous measurements of the tt¯, W<sup>+</sup>W<sup>-</sup>, and Z/γ* →ττ production cross-sections in pp collisions at √s = 7 TeV with the ATLAS detectorAlconada Verzini, María JosefinaAlonso, FranciscoAnduaga, Xabier SebastiánDova, María TeresaMonticelli, Fernando GabrielWahlberg, Hernán PabloThe ATLAS CollaborationCiencias ExactasFísicaproton-proton collisionsATLAS detectorSimultaneous measurements of the tt¯, W<sup>+</sup>W<sup>-</sup>, and Z/γ*→ττ production cross-sections using an integrated luminosity of 4.6 fb<sup>-1</sup> of pp collisions at √s = 7 TeV collected by the ATLAS detector at the LHC are presented. Events are selected with two high transverse momentum leptons consisting of an oppositely charged electron and muon pair. The three processes are separated using the distributions of the missing transverse momentum of events with zero and greater than zero jet multiplicities. Measurements of the fiducial cross-section are presented along with results that quantify for the first time the underlying correlations in the predicted and measured cross-sections due to proton parton distribution functions. These results indicate that the correlated next-to-leading-order predictions for tt¯ and Z/γ*→ττ underestimate the data, while those at next-to-next-to-leading-order generally describe the data well. The full cross-sections are measured to be σ(tt¯)=181.2±2.8<sup>+9.7</sup><sub>-9.5</sub>±3.3±3.3 pb, σ(W<sup>+</sup>W<sup>-</sup>)=53.3±2.7<sup>+7.3</sup><sub>-8.0</sub>±1.0±0.5 pb, and σ(Z/γ*→ττ)=1174±24<sup>+72</sup><sub>-87</sub>±21±9 pb, where the cited uncertainties are due to statistics, systematic effects, luminosity and the LHC beam energy measurement, respectively. The W+W- measurement includes the small contribution from Higgs boson decays, H→W<sup>+</sup>W<sup>-</sup>.La lista completa de autores que integran el documento puede consultarse en el archivo.Facultad de Ciencias ExactasInstituto de Física La Plata2015info: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/10915/86837enginfo:eu-repo/semantics/altIdentifier/issn/1550-7998info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.91.052005info: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:UNLP2025-09-29T11:16:55Zoai:sedici.unlp.edu.ar:10915/86837Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:16:55.583SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Simultaneous measurements of the tt¯, W<sup>+</sup>W<sup>-</sup>, and Z/γ* →ττ production cross-sections in pp collisions at √s = 7 TeV with the ATLAS detector
title Simultaneous measurements of the tt¯, W<sup>+</sup>W<sup>-</sup>, and Z/γ* →ττ production cross-sections in pp collisions at √s = 7 TeV with the ATLAS detector
spellingShingle Simultaneous measurements of the tt¯, W<sup>+</sup>W<sup>-</sup>, and Z/γ* →ττ production cross-sections in pp collisions at √s = 7 TeV with the ATLAS detector
Alconada Verzini, María Josefina
Ciencias Exactas
Física
proton-proton collisions
ATLAS detector
title_short Simultaneous measurements of the tt¯, W<sup>+</sup>W<sup>-</sup>, and Z/γ* →ττ production cross-sections in pp collisions at √s = 7 TeV with the ATLAS detector
title_full Simultaneous measurements of the tt¯, W<sup>+</sup>W<sup>-</sup>, and Z/γ* →ττ production cross-sections in pp collisions at √s = 7 TeV with the ATLAS detector
title_fullStr Simultaneous measurements of the tt¯, W<sup>+</sup>W<sup>-</sup>, and Z/γ* →ττ production cross-sections in pp collisions at √s = 7 TeV with the ATLAS detector
title_full_unstemmed Simultaneous measurements of the tt¯, W<sup>+</sup>W<sup>-</sup>, and Z/γ* →ττ production cross-sections in pp collisions at √s = 7 TeV with the ATLAS detector
title_sort Simultaneous measurements of the tt¯, W<sup>+</sup>W<sup>-</sup>, and Z/γ* →ττ production cross-sections in pp collisions at √s = 7 TeV with the ATLAS detector
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
proton-proton collisions
ATLAS detector
topic Ciencias Exactas
Física
proton-proton collisions
ATLAS detector
dc.description.none.fl_txt_mv Simultaneous measurements of the tt¯, W<sup>+</sup>W<sup>-</sup>, and Z/γ*→ττ production cross-sections using an integrated luminosity of 4.6 fb<sup>-1</sup> of pp collisions at √s = 7 TeV collected by the ATLAS detector at the LHC are presented. Events are selected with two high transverse momentum leptons consisting of an oppositely charged electron and muon pair. The three processes are separated using the distributions of the missing transverse momentum of events with zero and greater than zero jet multiplicities. Measurements of the fiducial cross-section are presented along with results that quantify for the first time the underlying correlations in the predicted and measured cross-sections due to proton parton distribution functions. These results indicate that the correlated next-to-leading-order predictions for tt¯ and Z/γ*→ττ underestimate the data, while those at next-to-next-to-leading-order generally describe the data well. The full cross-sections are measured to be σ(tt¯)=181.2±2.8<sup>+9.7</sup><sub>-9.5</sub>±3.3±3.3 pb, σ(W<sup>+</sup>W<sup>-</sup>)=53.3±2.7<sup>+7.3</sup><sub>-8.0</sub>±1.0±0.5 pb, and σ(Z/γ*→ττ)=1174±24<sup>+72</sup><sub>-87</sub>±21±9 pb, where the cited uncertainties are due to statistics, systematic effects, luminosity and the LHC beam energy measurement, respectively. The W+W- measurement includes the small contribution from Higgs boson decays, H→W<sup>+</sup>W<sup>-</sup>.
La lista completa de autores que integran el documento puede consultarse en el archivo.
Facultad de Ciencias Exactas
Instituto de Física La Plata
description Simultaneous measurements of the tt¯, W<sup>+</sup>W<sup>-</sup>, and Z/γ*→ττ production cross-sections using an integrated luminosity of 4.6 fb<sup>-1</sup> of pp collisions at √s = 7 TeV collected by the ATLAS detector at the LHC are presented. Events are selected with two high transverse momentum leptons consisting of an oppositely charged electron and muon pair. The three processes are separated using the distributions of the missing transverse momentum of events with zero and greater than zero jet multiplicities. Measurements of the fiducial cross-section are presented along with results that quantify for the first time the underlying correlations in the predicted and measured cross-sections due to proton parton distribution functions. These results indicate that the correlated next-to-leading-order predictions for tt¯ and Z/γ*→ττ underestimate the data, while those at next-to-next-to-leading-order generally describe the data well. The full cross-sections are measured to be σ(tt¯)=181.2±2.8<sup>+9.7</sup><sub>-9.5</sub>±3.3±3.3 pb, σ(W<sup>+</sup>W<sup>-</sup>)=53.3±2.7<sup>+7.3</sup><sub>-8.0</sub>±1.0±0.5 pb, and σ(Z/γ*→ττ)=1174±24<sup>+72</sup><sub>-87</sub>±21±9 pb, where the cited uncertainties are due to statistics, systematic effects, luminosity and the LHC beam energy measurement, respectively. The W+W- measurement includes the small contribution from Higgs boson decays, H→W<sup>+</sup>W<sup>-</sup>.
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
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info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/86837
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language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1550-7998
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevD.91.052005
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)
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