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Experimental studies of QCD using flavour tagged jets with DELPHI

Identified $b\overline{b}g$ and $q\overline{q}\gamma$ events from DELPHI are used to measure the ratio of the mean charged particle multiplicity distribution between gluon and quark jets. The dependence of this ratio with the jet energy is established using about three million Z$^0$ decays. Results...

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Detalles Bibliográficos
Autores principales: Fuster, J., Cabrera, S., Marti i Garcia, S.
Lenguaje:eng
Publicado: 1996
Materias:
Acceso en línea:https://dx.doi.org/10.1016/S0920-5632(97)00011-X
http://cds.cern.ch/record/310659
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author Fuster, J.
Cabrera, S.
Marti i Garcia, S.
author_facet Fuster, J.
Cabrera, S.
Marti i Garcia, S.
author_sort Fuster, J.
collection CERN
description Identified $b\overline{b}g$ and $q\overline{q}\gamma$ events from DELPHI are used to measure the ratio of the mean charged particle multiplicity distribution between gluon and quark jets. The dependence of this ratio with the jet energy is established using about three million Z$^0$ decays. Results from all other detectors are discussed and compared. A nice agreement is found among all them. The ratio between the normalized total three-jet cross sections of $b\overline{b}g$ and $q\overline{q}g, q \equiv u,d,s$ events is also determined. The preliminary value obtained indicates that $b$ quarks are experimentaly seen to radiate less than light quarks due to their higher mass. The suggested experimental error is $\sim$300 MeV for the $b$ mass determination at the M$_Z$ scale.
id cern-310659
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1996
record_format invenio
spelling cern-3106592019-09-30T06:29:59Zdoi:10.1016/S0920-5632(97)00011-Xhttp://cds.cern.ch/record/310659engFuster, J.Cabrera, S.Marti i Garcia, S.Experimental studies of QCD using flavour tagged jets with DELPHIParticle Physics - ExperimentIdentified $b\overline{b}g$ and $q\overline{q}\gamma$ events from DELPHI are used to measure the ratio of the mean charged particle multiplicity distribution between gluon and quark jets. The dependence of this ratio with the jet energy is established using about three million Z$^0$ decays. Results from all other detectors are discussed and compared. A nice agreement is found among all them. The ratio between the normalized total three-jet cross sections of $b\overline{b}g$ and $q\overline{q}g, q \equiv u,d,s$ events is also determined. The preliminary value obtained indicates that $b$ quarks are experimentaly seen to radiate less than light quarks due to their higher mass. The suggested experimental error is $\sim$300 MeV for the $b$ mass determination at the M$_Z$ scale.Identified $b\overline{b}g$ and $q\overline{q}\gamma$ events from DELPHI are used to measure the ratio of the mean charged particle multiplicity distribution between gluon and quark jets. The dependence of this ratio with the jet energy is established using about three million Z$~0$ decays. Results from all other detectors are discussed and compared. A nice agreement is found among all them. The ratio between the normalized total three-jet cross sections of $b\overline{b}g$ and $q\overline{q}g, q \equiv u,d,s$ events is also determined. The preliminary value obtained indicates that $b$ quarks are experimentaly seen to radiate less than light quarks due to their higher mass. The suggested experimental error is $\sim$300 MeV for the $b$ mass determination at the M$_Z$ scale.hep-ex/9609004IFIC-96-63IFIC-96-63oai:cds.cern.ch:3106591996-09-10
spellingShingle Particle Physics - Experiment
Fuster, J.
Cabrera, S.
Marti i Garcia, S.
Experimental studies of QCD using flavour tagged jets with DELPHI
title Experimental studies of QCD using flavour tagged jets with DELPHI
title_full Experimental studies of QCD using flavour tagged jets with DELPHI
title_fullStr Experimental studies of QCD using flavour tagged jets with DELPHI
title_full_unstemmed Experimental studies of QCD using flavour tagged jets with DELPHI
title_short Experimental studies of QCD using flavour tagged jets with DELPHI
title_sort experimental studies of qcd using flavour tagged jets with delphi
topic Particle Physics - Experiment
url https://dx.doi.org/10.1016/S0920-5632(97)00011-X
http://cds.cern.ch/record/310659
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AT cabreras experimentalstudiesofqcdusingflavourtaggedjetswithdelphi
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