Performance studies of $b$-tagging algorithms using top quark pair production in $pp$ collisions at the center of mass energy 7 TeV with the ATLAS experiment

$b$-tagging algorithms are calibrated with $tar{t}$ events for the first time with early data in the ATLAS experiment. Compared to di-jet events that have been used for $b$-tagging calibrations, $tar{t}$ events provide closer signature to most of the important signals in the experiment. The higher m...

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Detalles Bibliográficos
Autor principal: Kirika, U
Lenguaje:eng
Publicado: 2011
Materias:
Detectors and Experimental Techniques
Acceso en línea:http://cds.cern.ch/record/1394603
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author Kirika, U
author_facet Kirika, U
author_sort Kirika, U
collection CERN
description $b$-tagging algorithms are calibrated with $tar{t}$ events for the first time with early data in the ATLAS experiment. Compared to di-jet events that have been used for $b$-tagging calibrations, $tar{t}$ events provide closer signature to most of the important signals in the experiment. The higher multiplicity of jets, higher $p_{T}$, high purity of $tar{t}$ event sample with two $b$-jets per events are very attractive aspects of $tar{t}$ events. Also, the high $tar{t}$ production rate in the experiment enables calibrations already with 35 pb$^{-1}$. Two successful first attempts are presented in EPS 2011.
id cern-1394603
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2011
record_format invenio
spelling cern-13946032019-09-30T06:29:59Zhttp://cds.cern.ch/record/1394603engKirika, UPerformance studies of $b$-tagging algorithms using top quark pair production in $pp$ collisions at the center of mass energy 7 TeV with the ATLAS experimentDetectors and Experimental Techniques$b$-tagging algorithms are calibrated with $tar{t}$ events for the first time with early data in the ATLAS experiment. Compared to di-jet events that have been used for $b$-tagging calibrations, $tar{t}$ events provide closer signature to most of the important signals in the experiment. The higher multiplicity of jets, higher $p_{T}$, high purity of $tar{t}$ event sample with two $b$-jets per events are very attractive aspects of $tar{t}$ events. Also, the high $tar{t}$ production rate in the experiment enables calibrations already with 35 pb$^{-1}$. Two successful first attempts are presented in EPS 2011.ATL-PHYS-PROC-2011-209oai:cds.cern.ch:13946032011-11-01
spellingShingle Detectors and Experimental Techniques
Kirika, U
Performance studies of $b$-tagging algorithms using top quark pair production in $pp$ collisions at the center of mass energy 7 TeV with the ATLAS experiment
title Performance studies of $b$-tagging algorithms using top quark pair production in $pp$ collisions at the center of mass energy 7 TeV with the ATLAS experiment
title_full Performance studies of $b$-tagging algorithms using top quark pair production in $pp$ collisions at the center of mass energy 7 TeV with the ATLAS experiment
title_fullStr Performance studies of $b$-tagging algorithms using top quark pair production in $pp$ collisions at the center of mass energy 7 TeV with the ATLAS experiment
title_full_unstemmed Performance studies of $b$-tagging algorithms using top quark pair production in $pp$ collisions at the center of mass energy 7 TeV with the ATLAS experiment
title_short Performance studies of $b$-tagging algorithms using top quark pair production in $pp$ collisions at the center of mass energy 7 TeV with the ATLAS experiment
title_sort performance studies of $b$-tagging algorithms using top quark pair production in $pp$ collisions at the center of mass energy 7 tev with the atlas experiment
topic Detectors and Experimental Techniques
url http://cds.cern.ch/record/1394603
work_keys_str_mv AT kirikau performancestudiesofbtaggingalgorithmsusingtopquarkpairproductioninppcollisionsatthecenterofmassenergy7tevwiththeatlasexperiment

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