Measurement of the W-boson polarisation in top quark decays in pp collision data at sqrt(s) = 7 TeV using the ATLAS detector

The polarisation of W bosons in top-quark decays is sensitive to the Wtb vertex structure. In this analysis the W-boson helicity fractions and angular asymmetries are measured in top-quark pair production. Final states with a single charged lepton, missing transverse energy and at least four jets, w...

Descripción completa

Detalles Bibliográficos
Autor principal: The ATLAS collaboration
Lenguaje:eng
Publicado: 2011
Materias:
Detectors and Experimental Techniques
Acceso en línea:http://cds.cern.ch/record/1337787
_version_ 1780921840888184832
author The ATLAS collaboration
author_facet The ATLAS collaboration
author_sort The ATLAS collaboration
collection CERN
description The polarisation of W bosons in top-quark decays is sensitive to the Wtb vertex structure. In this analysis the W-boson helicity fractions and angular asymmetries are measured in top-quark pair production. Final states with a single charged lepton, missing transverse energy and at least four jets, where at least one of them is b-tagged, are considered. Data collected by the ATLAS experiment at a centre-of-mass energy of 7 TeV are used, corresponding to an integrated luminosity of 35 pb^-1. The results are in agreement with the Standard Model and are used to set limits on anomalous contributions to the Wtb vertex.
id cern-1337787
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2011
record_format invenio
spelling cern-13377872021-04-18T19:37:04Zhttp://cds.cern.ch/record/1337787engThe ATLAS collaborationMeasurement of the W-boson polarisation in top quark decays in pp collision data at sqrt(s) = 7 TeV using the ATLAS detectorDetectors and Experimental TechniquesThe polarisation of W bosons in top-quark decays is sensitive to the Wtb vertex structure. In this analysis the W-boson helicity fractions and angular asymmetries are measured in top-quark pair production. Final states with a single charged lepton, missing transverse energy and at least four jets, where at least one of them is b-tagged, are considered. Data collected by the ATLAS experiment at a centre-of-mass energy of 7 TeV are used, corresponding to an integrated luminosity of 35 pb^-1. The results are in agreement with the Standard Model and are used to set limits on anomalous contributions to the Wtb vertex.ATLAS-CONF-2011-037oai:cds.cern.ch:13377872011-03-23
spellingShingle Detectors and Experimental Techniques
The ATLAS collaboration
Measurement of the W-boson polarisation in top quark decays in pp collision data at sqrt(s) = 7 TeV using the ATLAS detector
title Measurement of the W-boson polarisation in top quark decays in pp collision data at sqrt(s) = 7 TeV using the ATLAS detector
title_full Measurement of the W-boson polarisation in top quark decays in pp collision data at sqrt(s) = 7 TeV using the ATLAS detector
title_fullStr Measurement of the W-boson polarisation in top quark decays in pp collision data at sqrt(s) = 7 TeV using the ATLAS detector
title_full_unstemmed Measurement of the W-boson polarisation in top quark decays in pp collision data at sqrt(s) = 7 TeV using the ATLAS detector
title_short Measurement of the W-boson polarisation in top quark decays in pp collision data at sqrt(s) = 7 TeV using the ATLAS detector
title_sort measurement of the w-boson polarisation in top quark decays in pp collision data at sqrt(s) = 7 tev using the atlas detector
topic Detectors and Experimental Techniques
url http://cds.cern.ch/record/1337787
work_keys_str_mv AT theatlascollaboration measurementofthewbosonpolarisationintopquarkdecaysinppcollisiondataatsqrts7tevusingtheatlasdetector

Ejemplares similares