Optimization of sensitivity for the Di-Higgs search in b¯blνqq final state in the LHC data recorded by the ATLAS detector in pp collisions at √s = 13 TeV

A study of optimization of signal sensitivity in the search for the diHiggs event in the ATLAS experiment is presented where one of the Higgs bosons decays via the H →− b¯b channel and the other via H →W W∗ with b¯blνqq as the final state . A large irreducible background contamination from tt¯ decay...

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Detalles Bibliográficos
Autor principal: Kafle, Pratik
Lenguaje:eng
Publicado: 2021
Materias:
Physics in General
Acceso en línea:http://cds.cern.ch/record/2750386
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author Kafle, Pratik
author_facet Kafle, Pratik
author_sort Kafle, Pratik
collection CERN
description A study of optimization of signal sensitivity in the search for the diHiggs event in the ATLAS experiment is presented where one of the Higgs bosons decays via the H →− b¯b channel and the other via H →W W∗ with b¯blνqq as the final state . A large irreducible background contamination from tt¯ decay significantly decreases the signal sensitivity in the diHiggs search. We employ ROOT’s built-in Multivariate analysis tool(TMVA) to train new physics motivated variables along with currently trained variables. An increment in the rejection of tt¯ background while keeping the signal efficiency high is observed.
id cern-2750386
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2021
record_format invenio
spelling cern-27503862021-04-26T07:22:59Zhttp://cds.cern.ch/record/2750386engKafle, PratikOptimization of sensitivity for the Di-Higgs search in b¯blνqq final state in the LHC data recorded by the ATLAS detector in pp collisions at √s = 13 TeVPhysics in General A study of optimization of signal sensitivity in the search for the diHiggs event in the ATLAS experiment is presented where one of the Higgs bosons decays via the H →− b¯b channel and the other via H →W W∗ with b¯blνqq as the final state . A large irreducible background contamination from tt¯ decay significantly decreases the signal sensitivity in the diHiggs search. We employ ROOT’s built-in Multivariate analysis tool(TMVA) to train new physics motivated variables along with currently trained variables. An increment in the rejection of tt¯ background while keeping the signal efficiency high is observed.CERN-STUDENTS-Note-2021-001oai:cds.cern.ch:27503862021-01-26
spellingShingle Physics in General
Kafle, Pratik
Optimization of sensitivity for the Di-Higgs search in b¯blνqq final state in the LHC data recorded by the ATLAS detector in pp collisions at √s = 13 TeV
title Optimization of sensitivity for the Di-Higgs search in b¯blνqq final state in the LHC data recorded by the ATLAS detector in pp collisions at √s = 13 TeV
title_full Optimization of sensitivity for the Di-Higgs search in b¯blνqq final state in the LHC data recorded by the ATLAS detector in pp collisions at √s = 13 TeV
title_fullStr Optimization of sensitivity for the Di-Higgs search in b¯blνqq final state in the LHC data recorded by the ATLAS detector in pp collisions at √s = 13 TeV
title_full_unstemmed Optimization of sensitivity for the Di-Higgs search in b¯blνqq final state in the LHC data recorded by the ATLAS detector in pp collisions at √s = 13 TeV
title_short Optimization of sensitivity for the Di-Higgs search in b¯blνqq final state in the LHC data recorded by the ATLAS detector in pp collisions at √s = 13 TeV
title_sort optimization of sensitivity for the di-higgs search in b¯blνqq final state in the lhc data recorded by the atlas detector in pp collisions at √s = 13 tev
topic Physics in General
url http://cds.cern.ch/record/2750386
work_keys_str_mv AT kaflepratik optimizationofsensitivityforthedihiggssearchinbblnqqfinalstateinthelhcdatarecordedbytheatlasdetectorinppcollisionsats13tev

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