Study of the ATLAS sensitivity to angular asymmetries in top quark decays

We study the sensitivity of the ATLAS experiment to the measurement of angular distributions and asymmetries in $t \bar t$ decays. We consider semileptonic decays of the top quark pair produced at LHC, with $t \to W^+ b$, $\bar t \to W^- \bar b$, one of the $W$ bosons decaying leptonically and the o...

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Detalles Bibliográficos
Autores principales: Aguilar-Saavedra, J A, Carvalho, J, Castro, N, Onofre, A, Veloso, F
Lenguaje:eng
Publicado: 2006
Materias:
Detectors and Experimental Techniques
Acceso en línea:http://cds.cern.ch/record/952732
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author Aguilar-Saavedra, J A
Carvalho, J
Castro, N
Onofre, A
Veloso, F
author_facet Aguilar-Saavedra, J A
Carvalho, J
Castro, N
Onofre, A
Veloso, F
author_sort Aguilar-Saavedra, J A
collection CERN
description We study the sensitivity of the ATLAS experiment to the measurement of angular distributions and asymmetries in $t \bar t$ decays. We consider semileptonic decays of the top quark pair produced at LHC, with $t \to W^+ b$, $\bar t \to W^- \bar b$, one of the $W$ bosons decaying leptonically and the other hadronically. Several event analysis and reconstruction procedures are examined, finding that a convenient choice of the reconstruction method can significantly reduce systematic uncertainties. The most relevant angular asymmetries studied can be measured with a precision ranging from 0.4% to 15%.
id cern-952732
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2006
record_format invenio
spelling cern-9527322021-04-18T19:39:56Zhttp://cds.cern.ch/record/952732engAguilar-Saavedra, J ACarvalho, JCastro, NOnofre, AVeloso, FStudy of the ATLAS sensitivity to angular asymmetries in top quark decaysDetectors and Experimental TechniquesWe study the sensitivity of the ATLAS experiment to the measurement of angular distributions and asymmetries in $t \bar t$ decays. We consider semileptonic decays of the top quark pair produced at LHC, with $t \to W^+ b$, $\bar t \to W^- \bar b$, one of the $W$ bosons decaying leptonically and the other hadronically. Several event analysis and reconstruction procedures are examined, finding that a convenient choice of the reconstruction method can significantly reduce systematic uncertainties. The most relevant angular asymmetries studied can be measured with a precision ranging from 0.4% to 15%.ATL-PHYS-PUB-2006-018ATL-COM-PHYS-2006-035oai:cds.cern.ch:9527322006-05-25
spellingShingle Detectors and Experimental Techniques
Aguilar-Saavedra, J A
Carvalho, J
Castro, N
Onofre, A
Veloso, F
Study of the ATLAS sensitivity to angular asymmetries in top quark decays
title Study of the ATLAS sensitivity to angular asymmetries in top quark decays
title_full Study of the ATLAS sensitivity to angular asymmetries in top quark decays
title_fullStr Study of the ATLAS sensitivity to angular asymmetries in top quark decays
title_full_unstemmed Study of the ATLAS sensitivity to angular asymmetries in top quark decays
title_short Study of the ATLAS sensitivity to angular asymmetries in top quark decays
title_sort study of the atlas sensitivity to angular asymmetries in top quark decays
topic Detectors and Experimental Techniques
url http://cds.cern.ch/record/952732
work_keys_str_mv AT aguilarsaavedraja studyoftheatlassensitivitytoangularasymmetriesintopquarkdecays
AT carvalhoj studyoftheatlassensitivitytoangularasymmetriesintopquarkdecays
AT castron studyoftheatlassensitivitytoangularasymmetriesintopquarkdecays
AT onofrea studyoftheatlassensitivitytoangularasymmetriesintopquarkdecays
AT velosof studyoftheatlassensitivitytoangularasymmetriesintopquarkdecays

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