Determination of Differences between Quark and Gluon Jets in 3-Jet Events

A comparison of the properties of quark and gluon jets has been made for the reaction e^+ e^- -> q qbar g recorded by the ALEPH Detector at CERN. A high purity sample of gluon jets is obtained by tagging b bbar quarks and energy ordering the jets within the events containing 3-jets (b bbar g). Th...

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Detalles Bibliográficos
Autor principal: Köksal, A
Lenguaje:eng
Publicado: CERN 1996
Materias:
Particle Physics - Experiment
Acceso en línea:http://cds.cern.ch/record/390137
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author Köksal, A
author_facet Köksal, A
author_sort Köksal, A
collection CERN
description A comparison of the properties of quark and gluon jets has been made for the reaction e^+ e^- -> q qbar g recorded by the ALEPH Detector at CERN. A high purity sample of gluon jets is obtained by tagging b bbar quarks and energy ordering the jets within the events containing 3-jets (b bbar g). The highest energy jet is accepted to be a quark or antiquark jet with high probability, because of the bremsstrahlung nature of gluon jet. The jets under study have an energy of about 25 GeV. It is observed that the mean particle multiplicity is found to be larger for gluon than quark jets at the same energy and the gluon jets yield a softer particle energy spectrum.
id cern-390137
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1996
publisher CERN
record_format invenio
spelling cern-3901372019-09-30T06:29:59Zhttp://cds.cern.ch/record/390137engKöksal, ADetermination of Differences between Quark and Gluon Jets in 3-Jet EventsParticle Physics - ExperimentA comparison of the properties of quark and gluon jets has been made for the reaction e^+ e^- -> q qbar g recorded by the ALEPH Detector at CERN. A high purity sample of gluon jets is obtained by tagging b bbar quarks and energy ordering the jets within the events containing 3-jets (b bbar g). The highest energy jet is accepted to be a quark or antiquark jet with high probability, because of the bremsstrahlung nature of gluon jet. The jets under study have an energy of about 25 GeV. It is observed that the mean particle multiplicity is found to be larger for gluon than quark jets at the same energy and the gluon jets yield a softer particle energy spectrum.CERNCERN-THESIS-99-039CERN-ALEPH-THESIS-96-042oai:cds.cern.ch:3901371996
spellingShingle Particle Physics - Experiment
Köksal, A
Determination of Differences between Quark and Gluon Jets in 3-Jet Events
title Determination of Differences between Quark and Gluon Jets in 3-Jet Events
title_full Determination of Differences between Quark and Gluon Jets in 3-Jet Events
title_fullStr Determination of Differences between Quark and Gluon Jets in 3-Jet Events
title_full_unstemmed Determination of Differences between Quark and Gluon Jets in 3-Jet Events
title_short Determination of Differences between Quark and Gluon Jets in 3-Jet Events
title_sort determination of differences between quark and gluon jets in 3-jet events
topic Particle Physics - Experiment
url http://cds.cern.ch/record/390137
work_keys_str_mv AT koksala determinationofdifferencesbetweenquarkandgluonjetsin3jetevents

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