Optimisation of the ATLAS $b$-tagging performance for the 2016 LHC Run

The performance of the current ATLAS $b$-tagging algorithms has been optimised ahead of the 2016 Run-2 data taking. The algorithms used to identify jets containing $b$-hadrons are briefly described and the improvements relative to the 2015 LHC run are highlighted. Particular emphasis is given to the...

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Detalles Bibliográficos
Autor principal: The ATLAS collaboration
Lenguaje:eng
Publicado: 2016
Materias:
Particle Physics - Experiment
Acceso en línea:http://cds.cern.ch/record/2160731
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author The ATLAS collaboration
author_facet The ATLAS collaboration
author_sort The ATLAS collaboration
collection CERN
description The performance of the current ATLAS $b$-tagging algorithms has been optimised ahead of the 2016 Run-2 data taking. The algorithms used to identify jets containing $b$-hadrons are briefly described and the improvements relative to the 2015 LHC run are highlighted. Particular emphasis is given to the optimisation and performance of the multivariate $b$-tagging algorithm, MV2. Overall for a $b$-tagging efficiency of 77%, the light-quark rejection factor has been held constant while increasing the charm rejection factor by 40%. The performance at high jet $p_T$ has also been improved.
id cern-2160731
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2016
record_format invenio
spelling cern-21607312021-04-18T19:40:51Zhttp://cds.cern.ch/record/2160731engThe ATLAS collaborationOptimisation of the ATLAS $b$-tagging performance for the 2016 LHC RunParticle Physics - ExperimentThe performance of the current ATLAS $b$-tagging algorithms has been optimised ahead of the 2016 Run-2 data taking. The algorithms used to identify jets containing $b$-hadrons are briefly described and the improvements relative to the 2015 LHC run are highlighted. Particular emphasis is given to the optimisation and performance of the multivariate $b$-tagging algorithm, MV2. Overall for a $b$-tagging efficiency of 77%, the light-quark rejection factor has been held constant while increasing the charm rejection factor by 40%. The performance at high jet $p_T$ has also been improved.ATL-PHYS-PUB-2016-012oai:cds.cern.ch:21607312016-06-14
spellingShingle Particle Physics - Experiment
The ATLAS collaboration
Optimisation of the ATLAS $b$-tagging performance for the 2016 LHC Run
title Optimisation of the ATLAS $b$-tagging performance for the 2016 LHC Run
title_full Optimisation of the ATLAS $b$-tagging performance for the 2016 LHC Run
title_fullStr Optimisation of the ATLAS $b$-tagging performance for the 2016 LHC Run
title_full_unstemmed Optimisation of the ATLAS $b$-tagging performance for the 2016 LHC Run
title_short Optimisation of the ATLAS $b$-tagging performance for the 2016 LHC Run
title_sort optimisation of the atlas $b$-tagging performance for the 2016 lhc run
topic Particle Physics - Experiment
url http://cds.cern.ch/record/2160731
work_keys_str_mv AT theatlascollaboration optimisationoftheatlasbtaggingperformanceforthe2016lhcrun

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