Measurement of the polarisation of W bosons produced with large transverse momentum in pp collisions at √s =7 TeV with the ATLAS experiment

Autores
Anduaga, Xabier Sebastián; Dova, María Teresa; Monticelli, Fernando Gabriel; Tripiana, Martín Fernando; The ATLAS Collaboration
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
This paper describes an analysis of the angular distribution of W → eν and W → μν decays, using data from pp collisions at √ s = 7 TeV recorded with the ATLAS detector at the LHC in 2010, corresponding to an integrated luminosity of about 35 pb−1. Using the decay lepton transverse momentum and the missing transverse momentum, the W decay angular distribution projected onto the transverse plane is obtained and analysed in terms of helicity fractions f0, fL and fR over two ranges of W transverse momentum (pW T ) : 35 50 GeV. Good agreement is found with theoretical predictions. For pW T > 50 GeV, the values of f0 and fL − fR, averaged over charge and lepton flavour, are measured to be: f0 = 0.127±0.030±0.108 and fL−fR = 0.252±0.017±0.030, where the first uncertainties are statistical, and the second include all systematic effects.
La lista completa de autores puede verse en el archivo asociado.
Instituto de Física La Plata
Materia
Física
W bosons
pp collisions
ATLAS detector
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:10915/167539

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network_name_str SEDICI (UNLP)
spelling Measurement of the polarisation of W bosons produced with large transverse momentum in pp collisions at √s =7 TeV with the ATLAS experimentAnduaga, Xabier SebastiánDova, María TeresaMonticelli, Fernando GabrielTripiana, Martín FernandoThe ATLAS CollaborationFísicaW bosonspp collisionsATLAS detectorThis paper describes an analysis of the angular distribution of W → eν and W → μν decays, using data from pp collisions at √ s = 7 TeV recorded with the ATLAS detector at the LHC in 2010, corresponding to an integrated luminosity of about 35 pb−1. Using the decay lepton transverse momentum and the missing transverse momentum, the W decay angular distribution projected onto the transverse plane is obtained and analysed in terms of helicity fractions f0, fL and fR over two ranges of W transverse momentum (pW T ) : 35<pW T < 50 GeV and pW T > 50 GeV. Good agreement is found with theoretical predictions. For pW T > 50 GeV, the values of f0 and fL − fR, averaged over charge and lepton flavour, are measured to be: f0 = 0.127±0.030±0.108 and fL−fR = 0.252±0.017±0.030, where the first uncertainties are statistical, and the second include all systematic effects.La lista completa de autores puede verse en el archivo asociado.Instituto de Física La Plata2012info: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/10915/167539enginfo:eu-repo/semantics/altIdentifier/issn/1434-6052info:eu-repo/semantics/altIdentifier/doi/10.1140/epjc/s10052-012-2001-6info: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:UNLP2025-09-29T11:44:36Zoai:sedici.unlp.edu.ar:10915/167539Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:44:36.827SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Measurement of the polarisation of W bosons produced with large transverse momentum in pp collisions at √s =7 TeV with the ATLAS experiment
title Measurement of the polarisation of W bosons produced with large transverse momentum in pp collisions at √s =7 TeV with the ATLAS experiment
spellingShingle Measurement of the polarisation of W bosons produced with large transverse momentum in pp collisions at √s =7 TeV with the ATLAS experiment
Anduaga, Xabier Sebastián
Física
W bosons
pp collisions
ATLAS detector
title_short Measurement of the polarisation of W bosons produced with large transverse momentum in pp collisions at √s =7 TeV with the ATLAS experiment
title_full Measurement of the polarisation of W bosons produced with large transverse momentum in pp collisions at √s =7 TeV with the ATLAS experiment
title_fullStr Measurement of the polarisation of W bosons produced with large transverse momentum in pp collisions at √s =7 TeV with the ATLAS experiment
title_full_unstemmed Measurement of the polarisation of W bosons produced with large transverse momentum in pp collisions at √s =7 TeV with the ATLAS experiment
title_sort Measurement of the polarisation of W bosons produced with large transverse momentum in pp collisions at √s =7 TeV with the ATLAS experiment
dc.creator.none.fl_str_mv Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín Fernando
The ATLAS Collaboration
author Anduaga, Xabier Sebastián
author_facet Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín Fernando
The ATLAS Collaboration
author_role author
author2 Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín Fernando
The ATLAS Collaboration
author2_role author
author
author
author
dc.subject.none.fl_str_mv Física
W bosons
pp collisions
ATLAS detector
topic Física
W bosons
pp collisions
ATLAS detector
dc.description.none.fl_txt_mv This paper describes an analysis of the angular distribution of W → eν and W → μν decays, using data from pp collisions at √ s = 7 TeV recorded with the ATLAS detector at the LHC in 2010, corresponding to an integrated luminosity of about 35 pb−1. Using the decay lepton transverse momentum and the missing transverse momentum, the W decay angular distribution projected onto the transverse plane is obtained and analysed in terms of helicity fractions f0, fL and fR over two ranges of W transverse momentum (pW T ) : 35<pW T < 50 GeV and pW T > 50 GeV. Good agreement is found with theoretical predictions. For pW T > 50 GeV, the values of f0 and fL − fR, averaged over charge and lepton flavour, are measured to be: f0 = 0.127±0.030±0.108 and fL−fR = 0.252±0.017±0.030, where the first uncertainties are statistical, and the second include all systematic effects.
La lista completa de autores puede verse en el archivo asociado.
Instituto de Física La Plata
description This paper describes an analysis of the angular distribution of W → eν and W → μν decays, using data from pp collisions at √ s = 7 TeV recorded with the ATLAS detector at the LHC in 2010, corresponding to an integrated luminosity of about 35 pb−1. Using the decay lepton transverse momentum and the missing transverse momentum, the W decay angular distribution projected onto the transverse plane is obtained and analysed in terms of helicity fractions f0, fL and fR over two ranges of W transverse momentum (pW T ) : 35<pW T < 50 GeV and pW T > 50 GeV. Good agreement is found with theoretical predictions. For pW T > 50 GeV, the values of f0 and fL − fR, averaged over charge and lepton flavour, are measured to be: f0 = 0.127±0.030±0.108 and fL−fR = 0.252±0.017±0.030, where the first uncertainties are statistical, and the second include all systematic effects.
publishDate 2012
dc.date.none.fl_str_mv 2012
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/10915/167539
url http://sedici.unlp.edu.ar/handle/10915/167539
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/s10052-012-2001-6
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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