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Soft b-hadron tagging with the ATLAS detector

The identification of b-hadrons at low-pT can play a crucial role in a variety of analyses, such as those where soft b-hadrons are produced by new physics signals as in compressed SUSY searches for stop/sbottom production or in analyses that require heavy flavour jet vetos. Such b-hadron identificat...

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Detalles Bibliográficos
Autor principal: Yamazaki, Tomohiro
Lenguaje:eng
Publicado: 2019
Materias:
Acceso en línea:http://cds.cern.ch/record/2683956
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author Yamazaki, Tomohiro
author_facet Yamazaki, Tomohiro
author_sort Yamazaki, Tomohiro
collection CERN
description The identification of b-hadrons at low-pT can play a crucial role in a variety of analyses, such as those where soft b-hadrons are produced by new physics signals as in compressed SUSY searches for stop/sbottom production or in analyses that require heavy flavour jet vetos. Such b-hadron identification is a particularly challenging task, owing to the relatively short decay length of such b-hadrons and difficulties identifying hadronic jets, and current flavour tagging algorithms are often not tuned to identify such b-hadron decays. This poster presents new developments for soft b-hadron tagging techniques based either on the presence of jets composed only of tracks, or on the identification of secondary vertices from the b-hadron decay seeded without requiring the presence of a jet. The techniques will be described and their performance reviewed.
id cern-2683956
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2019
record_format invenio
spelling cern-26839562019-09-30T06:29:59Zhttp://cds.cern.ch/record/2683956engYamazaki, TomohiroSoft b-hadron tagging with the ATLAS detectorParticle Physics - ExperimentThe identification of b-hadrons at low-pT can play a crucial role in a variety of analyses, such as those where soft b-hadrons are produced by new physics signals as in compressed SUSY searches for stop/sbottom production or in analyses that require heavy flavour jet vetos. Such b-hadron identification is a particularly challenging task, owing to the relatively short decay length of such b-hadrons and difficulties identifying hadronic jets, and current flavour tagging algorithms are often not tuned to identify such b-hadron decays. This poster presents new developments for soft b-hadron tagging techniques based either on the presence of jets composed only of tracks, or on the identification of secondary vertices from the b-hadron decay seeded without requiring the presence of a jet. The techniques will be described and their performance reviewed.ATL-PHYS-SLIDE-2019-461oai:cds.cern.ch:26839562019-07-25
spellingShingle Particle Physics - Experiment
Yamazaki, Tomohiro
Soft b-hadron tagging with the ATLAS detector
title Soft b-hadron tagging with the ATLAS detector
title_full Soft b-hadron tagging with the ATLAS detector
title_fullStr Soft b-hadron tagging with the ATLAS detector
title_full_unstemmed Soft b-hadron tagging with the ATLAS detector
title_short Soft b-hadron tagging with the ATLAS detector
title_sort soft b-hadron tagging with the atlas detector
topic Particle Physics - Experiment
url http://cds.cern.ch/record/2683956
work_keys_str_mv AT yamazakitomohiro softbhadrontaggingwiththeatlasdetector