Measurement of triple-gauge-boson couplings of the W boson at LEP

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The CP-conserving triple-gauge-boson couplings, gZ1 , κγ , λγ , gZ5 , κZ and λZ are measured using hadronic and semi-leptonic W-pair events selected in 629 pb−1 of data collected at LEP with the L3 detector at centre-of-mass energies between 189 and 209 GeV. The results are combined with previous L3...

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Detalles Bibliográficos
Autores principales: Dova, María Teresa, L3 Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2004
Materias:
Física
W boson
L3 detector
Electroweak theory
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/78382
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-78382
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
W boson
L3 detector
Electroweak theory
spellingShingle Física
W boson
L3 detector
Electroweak theory
Dova, María Teresa
L3 Collaboration
Measurement of triple-gauge-boson couplings of the W boson at LEP
topic_facet Física
W boson
L3 detector
Electroweak theory
description The CP-conserving triple-gauge-boson couplings, gZ1 , κγ , λγ , gZ5 , κZ and λZ are measured using hadronic and semi-leptonic W-pair events selected in 629 pb−1 of data collected at LEP with the L3 detector at centre-of-mass energies between 189 and 209 GeV. The results are combined with previous L3 measurements based on data collected at lower centre-of-mass energies and with the results from single-W production and from events with a single-photon and missing energy. Imposing the constraints κZ = gZ1− tan2 θW(κγ − 1) and λZ =λγ , we obtain for the C and P conserving couplings the results: gZ1= 0.966 ± 0.033(stat) ± 0.015(syst), κγ =1.013 ± 0.066(stat) ± 0.026(syst), λγ =−0.021 ± 0.035(stat) ± 0.017(syst). Results from the analysis of fully leptonic W-pair decays are also given. All results are in agreement with the Standard Model expectations and confirm the existence of self-couplings among electroweak gauge bosons.
format Articulo
Articulo
author Dova, María Teresa
L3 Collaboration
author_facet Dova, María Teresa
L3 Collaboration
author_sort Dova, María Teresa
title Measurement of triple-gauge-boson couplings of the W boson at LEP
title_short Measurement of triple-gauge-boson couplings of the W boson at LEP
title_full Measurement of triple-gauge-boson couplings of the W boson at LEP
title_fullStr Measurement of triple-gauge-boson couplings of the W boson at LEP
title_full_unstemmed Measurement of triple-gauge-boson couplings of the W boson at LEP
title_sort measurement of triple-gauge-boson couplings of the w boson at lep
publishDate 2004
url http://sedici.unlp.edu.ar/handle/10915/78382
work_keys_str_mv AT dovamariateresa measurementoftriplegaugebosoncouplingsofthewbosonatlep
AT l3collaboration measurementoftriplegaugebosoncouplingsofthewbosonatlep
bdutipo_str Repositorios
_version_ 1764820485855510528

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