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Study of the fragmentation of b quarks into B mesons at the Z peak

A study of the fragmentation of b quarks into B mesons is presented. The analysis makes use of the statistics collected by the ALEPH experiment around the Z peak during the years 1991-1995. A semi- exclusive reconstruction of B to l nu D(*) decays is performed, by combining lepton candidates with fu...

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Autor principal: CERN. Geneva
Lenguaje:eng
Publicado: 2000
Materias:
Acceso en línea:http://cds.cern.ch/record/494676
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author CERN. Geneva
author_facet CERN. Geneva
author_sort CERN. Geneva
collection CERN
description A study of the fragmentation of b quarks into B mesons is presented. The analysis makes use of the statistics collected by the ALEPH experiment around the Z peak during the years 1991-1995. A semi- exclusive reconstruction of B to l nu D(*) decays is performed, by combining lepton candidates with fully reconstructed D(*) mesons, while the neutrino energy is estimated from the missing energy of the event. The mean reduced energy of the weakly decaying and leading B meson is found to be <x/sub b//sup wd/>=0.7198+or-0.0045(stat) +or-0.0053(syst) and <x/sub b//sup L/>=0.7394+or-0.0045(stat) +or-0.0053(syst) respectively. (4 refs).
id cern-494676
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2000
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spelling cern-4946762022-01-27T08:58:10Zhttp://cds.cern.ch/record/494676engCERN. GenevaStudy of the fragmentation of b quarks into B mesons at the Z peakParticle Physics - ExperimentA study of the fragmentation of b quarks into B mesons is presented. The analysis makes use of the statistics collected by the ALEPH experiment around the Z peak during the years 1991-1995. A semi- exclusive reconstruction of B to l nu D(*) decays is performed, by combining lepton candidates with fully reconstructed D(*) mesons, while the neutrino energy is estimated from the missing energy of the event. The mean reduced energy of the weakly decaying and leading B meson is found to be <x/sub b//sup wd/>=0.7198+or-0.0045(stat) +or-0.0053(syst) and <x/sub b//sup L/>=0.7394+or-0.0045(stat) +or-0.0053(syst) respectively. (4 refs).CERN-ALEPH-2001-039oai:cds.cern.ch:4946762000
spellingShingle Particle Physics - Experiment
CERN. Geneva
Study of the fragmentation of b quarks into B mesons at the Z peak
title Study of the fragmentation of b quarks into B mesons at the Z peak
title_full Study of the fragmentation of b quarks into B mesons at the Z peak
title_fullStr Study of the fragmentation of b quarks into B mesons at the Z peak
title_full_unstemmed Study of the fragmentation of b quarks into B mesons at the Z peak
title_short Study of the fragmentation of b quarks into B mesons at the Z peak
title_sort study of the fragmentation of b quarks into b mesons at the z peak
topic Particle Physics - Experiment
url http://cds.cern.ch/record/494676
work_keys_str_mv AT cerngeneva studyofthefragmentationofbquarksintobmesonsatthezpeak