Top quark mass measurement using template methods, with 35 pb−1 recorded by the ATLAS detector, at sqrt(s) = 7 TeV.

A first measurement of the top quark mass (mtop) has been performed by ATLAS with the first 35 pb−1 recorded by the experiment. This measurement is based on three template methods, in the tt ̄ → lepton + jets channel. One of these methods, described in details here, makes use of the observable R32,...

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Detalles Bibliográficos
Autor principal: Etienvre, AI
Lenguaje:eng
Publicado: 2011
Materias:
Detectors and Experimental Techniques
Acceso en línea:http://cds.cern.ch/record/1394241
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author Etienvre, AI
author_facet Etienvre, AI
author_sort Etienvre, AI
collection CERN
description A first measurement of the top quark mass (mtop) has been performed by ATLAS with the first 35 pb−1 recorded by the experiment. This measurement is based on three template methods, in the tt ̄ → lepton + jets channel. One of these methods, described in details here, makes use of the observable R32, event-by-event ratio of the reconstructed top-quark and W boson masses associ- ated to the hadronically decaying top quark candidates; combining both channels, the measured top quark mass is: mtop = (169.3±4.0stat ±4.9syst) GeV. Two additional template methods are also presented; they lead to consistent results, with different sensitivities to systematic effects.
id cern-1394241
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2011
record_format invenio
spelling cern-13942412019-09-30T06:29:59Zhttp://cds.cern.ch/record/1394241engEtienvre, AITop quark mass measurement using template methods, with 35 pb−1 recorded by the ATLAS detector, at sqrt(s) = 7 TeV.Detectors and Experimental TechniquesA first measurement of the top quark mass (mtop) has been performed by ATLAS with the first 35 pb−1 recorded by the experiment. This measurement is based on three template methods, in the tt ̄ → lepton + jets channel. One of these methods, described in details here, makes use of the observable R32, event-by-event ratio of the reconstructed top-quark and W boson masses associ- ated to the hadronically decaying top quark candidates; combining both channels, the measured top quark mass is: mtop = (169.3±4.0stat ±4.9syst) GeV. Two additional template methods are also presented; they lead to consistent results, with different sensitivities to systematic effects.ATL-PHYS-PROC-2011-191oai:cds.cern.ch:13942412011-10-28
spellingShingle Detectors and Experimental Techniques
Etienvre, AI
Top quark mass measurement using template methods, with 35 pb−1 recorded by the ATLAS detector, at sqrt(s) = 7 TeV.
title Top quark mass measurement using template methods, with 35 pb−1 recorded by the ATLAS detector, at sqrt(s) = 7 TeV.
title_full Top quark mass measurement using template methods, with 35 pb−1 recorded by the ATLAS detector, at sqrt(s) = 7 TeV.
title_fullStr Top quark mass measurement using template methods, with 35 pb−1 recorded by the ATLAS detector, at sqrt(s) = 7 TeV.
title_full_unstemmed Top quark mass measurement using template methods, with 35 pb−1 recorded by the ATLAS detector, at sqrt(s) = 7 TeV.
title_short Top quark mass measurement using template methods, with 35 pb−1 recorded by the ATLAS detector, at sqrt(s) = 7 TeV.
title_sort top quark mass measurement using template methods, with 35 pb−1 recorded by the atlas detector, at sqrt(s) = 7 tev.
topic Detectors and Experimental Techniques
url http://cds.cern.ch/record/1394241
work_keys_str_mv AT etienvreai topquarkmassmeasurementusingtemplatemethodswith35pb1recordedbytheatlasdetectoratsqrts7tev

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