Measurement of the cross section of W-boson pair production at LEP

The cross section of W-boson pair-production is measured with the L3 detector at LEP. In a data sample corresponding to a total luminosity of 629.4 pb<sup>−1</sup>, collected at centre-of-mass energies ranging from 189 to 209 GeV, 9834 four-fermion events with W bosons decaying into hadr...

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Detalles Bibliográficos
Autores principales: Dova, María Teresa, L3 Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2004
Materias:
Ciencias Exactas
Física
W-boson
large electron positron collider
L3 detector
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/79970
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-79970
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Física
W-boson
large electron positron collider
L3 detector
spellingShingle Ciencias Exactas
Física
W-boson
large electron positron collider
L3 detector
Dova, María Teresa
L3 Collaboration
Measurement of the cross section of W-boson pair production at LEP
topic_facet Ciencias Exactas
Física
W-boson
large electron positron collider
L3 detector
description The cross section of W-boson pair-production is measured with the L3 detector at LEP. In a data sample corresponding to a total luminosity of 629.4 pb<sup>−1</sup>, collected at centre-of-mass energies ranging from 189 to 209 GeV, 9834 four-fermion events with W bosons decaying into hadrons or leptons are selected. The total cross section is measured with a precision of 1.4% and agrees with the Standard Model expectation. Assuming charged-lepton universality, the branching fraction for hadronic W-boson decays is measured to be: Br(W → hadrons) = 67.50 ± 0.42(stat.) ± 0.30(syst.)%, in agreement with the Standard Model. Differential cross sections as a function of the W-production angle are also measured for the semi-leptonic channels <i>qqeν</i> and <i>qqμν</i>.
format Articulo
Articulo
author Dova, María Teresa
L3 Collaboration
author_facet Dova, María Teresa
L3 Collaboration
author_sort Dova, María Teresa
title Measurement of the cross section of W-boson pair production at LEP
title_short Measurement of the cross section of W-boson pair production at LEP
title_full Measurement of the cross section of W-boson pair production at LEP
title_fullStr Measurement of the cross section of W-boson pair production at LEP
title_full_unstemmed Measurement of the cross section of W-boson pair production at LEP
title_sort measurement of the cross section of w-boson pair production at lep
publishDate 2004
url http://sedici.unlp.edu.ar/handle/10915/79970
work_keys_str_mv AT dovamariateresa measurementofthecrosssectionofwbosonpairproductionatlep
AT l3collaboration measurementofthecrosssectionofwbosonpairproductionatlep
bdutipo_str Repositorios
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