Measurements of Z° bƀ decays and the semileptonic branching ratio BR (b→, ℓ + X)

We have measured the decay properties of from a study of inclusive muon and electron events. The average (e and μ) b-quark semileptonic branching ratio has been determined to be BR (b → ℓ + X) = 0.119 ± 0.003 (stat.) ± 0.006 (syst.), assuming the standard model prediction of Γbb = 378 ± 3 MeV. From...

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Detalles Bibliográficos
Autores principales: Dova, María Teresa, L3 Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 1991
Materias:
Ciencias Exactas
decaimiento
mediciones
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/72420
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-72420
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
decaimiento
mediciones
spellingShingle Ciencias Exactas
decaimiento
mediciones
Dova, María Teresa
L3 Collaboration
Measurements of Z° bƀ decays and the semileptonic branching ratio BR (b→, ℓ + X)
topic_facet Ciencias Exactas
decaimiento
mediciones
description We have measured the decay properties of from a study of inclusive muon and electron events. The average (e and μ) b-quark semileptonic branching ratio has been determined to be BR (b → ℓ + X) = 0.119 ± 0.003 (stat.) ± 0.006 (syst.), assuming the standard model prediction of Γbb = 378 ± 3 MeV. From the ratio of the number of dilepton events to single lepton events, we find BR (b → ℓ + X) = 0.113 ± 0.010 (stat.) ± 0.006 (syst.), without assumptions on Λbb. The partial decay width of the Z0 into has been measured to be Λbb = 385 ± 7 (stat.) ± 11 (syst.) MeV with an additional 19 MeV error from the uncertainty in BR (b → ℓ + X). The average fractional energy of bottom hadrons in events has been determined to be 〈xE〉 = 0.686 ± 0.006 (stat.) ± 0.016 (syst.).
format Articulo
Articulo
author Dova, María Teresa
L3 Collaboration
author_facet Dova, María Teresa
L3 Collaboration
author_sort Dova, María Teresa
title Measurements of Z° bƀ decays and the semileptonic branching ratio BR (b→, ℓ + X)
title_short Measurements of Z° bƀ decays and the semileptonic branching ratio BR (b→, ℓ + X)
title_full Measurements of Z° bƀ decays and the semileptonic branching ratio BR (b→, ℓ + X)
title_fullStr Measurements of Z° bƀ decays and the semileptonic branching ratio BR (b→, ℓ + X)
title_full_unstemmed Measurements of Z° bƀ decays and the semileptonic branching ratio BR (b→, ℓ + X)
title_sort measurements of z° bƀ decays and the semileptonic branching ratio br (b→, ℓ + x)
publishDate 1991
url http://sedici.unlp.edu.ar/handle/10915/72420
work_keys_str_mv AT dovamariateresa measurementsofzbƀdecaysandthesemileptonicbranchingratiobrblx
AT l3collaboration measurementsofzbƀdecaysandthesemileptonicbranchingratiobrblx
bdutipo_str Repositorios
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