First observation of Z->τhτℓ Decays with the ATLAS detector

A study of Z->ττ decays has been performed with the ATLAS experiment at the LHC. The channel with one lepton decaying into an electron or muon and the second one into hadrons has been considered. The analysis is based on a data sample corresponding to an integrated luminosity of 8.3 pb−1 for...

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Detalles Bibliográficos
Autor principal: Larner, A
Lenguaje:eng
Publicado: 2011
Materias:
Detectors and Experimental Techniques
Acceso en línea:http://cds.cern.ch/record/1356154
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author Larner, A
author_facet Larner, A
author_sort Larner, A
collection CERN
description A study of Z->ττ decays has been performed with the ATLAS experiment at the LHC. The channel with one lepton decaying into an electron or muon and the second one into hadrons has been considered. The analysis is based on a data sample corresponding to an integrated luminosity of 8.3 pb−1 for the electron channel and 8.5 pb−1 for the muon channel,at a proton-proton centre-of-mass energy of 7 TeV. In the muon channel a total of 51 data events is selected, with a total estimated background of 9.9 ± 2.1. In the electron channel a total of 29 data events is selected, with an estimated background of 11.8 ± 1.7 events. The obtained number of events in data is compatible with the Standard Model expectation. This is the first observation of Z->ττ decays in ATLAS.
id cern-1356154
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2011
record_format invenio
spelling cern-13561542019-09-30T06:29:59Zhttp://cds.cern.ch/record/1356154engLarner, AFirst observation of Z->τhτℓ Decays with the ATLAS detectorDetectors and Experimental TechniquesA study of Z->ττ decays has been performed with the ATLAS experiment at the LHC. The channel with one lepton decaying into an electron or muon and the second one into hadrons has been considered. The analysis is based on a data sample corresponding to an integrated luminosity of 8.3 pb−1 for the electron channel and 8.5 pb−1 for the muon channel,at a proton-proton centre-of-mass energy of 7 TeV. In the muon channel a total of 51 data events is selected, with a total estimated background of 9.9 ± 2.1. In the electron channel a total of 29 data events is selected, with an estimated background of 11.8 ± 1.7 events. The obtained number of events in data is compatible with the Standard Model expectation. This is the first observation of Z->ττ decays in ATLAS.ATL-PHYS-PROC-2011-047oai:cds.cern.ch:13561542011-06-03
spellingShingle Detectors and Experimental Techniques
Larner, A
First observation of Z->τhτℓ Decays with the ATLAS detector
title First observation of Z->τhτℓ Decays with the ATLAS detector
title_full First observation of Z->τhτℓ Decays with the ATLAS detector
title_fullStr First observation of Z->τhτℓ Decays with the ATLAS detector
title_full_unstemmed First observation of Z->τhτℓ Decays with the ATLAS detector
title_short First observation of Z->τhτℓ Decays with the ATLAS detector
title_sort first observation of z->τhτℓ decays with the atlas detector
topic Detectors and Experimental Techniques
url http://cds.cern.ch/record/1356154
work_keys_str_mv AT larnera firstobservationofzgtthtldecayswiththeatlasdetector

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