Measurement of the B°-B° mixing parameter and the Z → bb forward-backward asymmetry

We have measured the time integrated B°-B° mixing parameter and the forward-backward asymmetry in the process e+e− → bb using hadronic events containing muons or electrons. The data sample corresponds to 1,044,000 hadronic decays of the Z. From a fit to the momentum and transverse momentum distribu...

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Detalles Bibliográficos
Autores principales: Dova, María Teresa, L3 Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 1994
Materias:
Ciencias Exactas
Física
hadronic events
muons
electrons
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/73621
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-73621
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
hadronic events
muons
electrons
spellingShingle Ciencias Exactas
Física
hadronic events
muons
electrons
Dova, María Teresa
L3 Collaboration
Measurement of the B°-B° mixing parameter and the Z → bb forward-backward asymmetry
topic_facet Ciencias Exactas
Física
hadronic events
muons
electrons
description We have measured the time integrated B°-B° mixing parameter and the forward-backward asymmetry in the process e+e− → bb using hadronic events containing muons or electrons. The data sample corresponds to 1,044,000 hadronic decays of the Z. From a fit to the momentum and transverse momentum distributions for single lepton and dilepton events, we have determined the B°-B° mixing parameter to be χB = 0.123 =k 0.012 (stat.) -t- 0.008 (sys.), and the bb forward-backward asymmetry at the effective center-of-mass energy x/~ = 91.30GeV to be AbF , = 0.087 + 0.011 (stat.) =t= 0.004 (sys.) This measurement corresponds to a value of the effective electroweak mixing angle of sin20w = 0.2335 + 0.0021.
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 B°-B° mixing parameter and the Z → bb forward-backward asymmetry
title_short Measurement of the B°-B° mixing parameter and the Z → bb forward-backward asymmetry
title_full Measurement of the B°-B° mixing parameter and the Z → bb forward-backward asymmetry
title_fullStr Measurement of the B°-B° mixing parameter and the Z → bb forward-backward asymmetry
title_full_unstemmed Measurement of the B°-B° mixing parameter and the Z → bb forward-backward asymmetry
title_sort measurement of the b°-b° mixing parameter and the z → bb forward-backward asymmetry
publishDate 1994
url http://sedici.unlp.edu.ar/handle/10915/73621
work_keys_str_mv AT dovamariateresa measurementofthebbmixingparameterandthezbbforwardbackwardasymmetry
AT l3collaboration measurementofthebbmixingparameterandthezbbforwardbackwardasymmetry
bdutipo_str Repositorios
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