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Measurement of the top-quark mass with all-jets final states in pp collisions at 7 TeV
A measurement is presented of the top-quark mass in the all-jets channel using a sample of ttbar candidate events requiring at least six jets in the final state. The data have been collected by CMS in pp collisions at 7 TeV and correspond to an integrated luminosity of 3.54/fb. In this channel, a ve...
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Lenguaje: | eng |
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2013
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Acceso en línea: | http://cds.cern.ch/record/1510135 |
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author | Schlieckau, Eike Steffen |
author_facet | Schlieckau, Eike Steffen |
author_sort | Schlieckau, Eike Steffen |
collection | CERN |
description | A measurement is presented of the top-quark mass in the all-jets channel using a sample of ttbar candidate events requiring at least six jets in the final state. The data have been collected by CMS in pp collisions at 7 TeV and correspond to an integrated luminosity of 3.54/fb. In this channel, a very tight event selection is needed to reduce the huge amount of multi-jet events. In addition, the signal fraction and mass resolution is improved by the use of a kinematic fit. An ideogram method is used to measure the top-quark mass with the background estimated from data through an event mixing technique. The top-quark mass is measured to be $m_t = 173.5 \pm 0.7 (stat.) \pm 1.3 (syst.)$ GeV. |
id | cern-1510135 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2013 |
record_format | invenio |
spelling | cern-15101352019-09-30T06:29:59Zhttp://cds.cern.ch/record/1510135engSchlieckau, Eike SteffenMeasurement of the top-quark mass with all-jets final states in pp collisions at 7 TeVDetectors and Experimental TechniquesA measurement is presented of the top-quark mass in the all-jets channel using a sample of ttbar candidate events requiring at least six jets in the final state. The data have been collected by CMS in pp collisions at 7 TeV and correspond to an integrated luminosity of 3.54/fb. In this channel, a very tight event selection is needed to reduce the huge amount of multi-jet events. In addition, the signal fraction and mass resolution is improved by the use of a kinematic fit. An ideogram method is used to measure the top-quark mass with the background estimated from data through an event mixing technique. The top-quark mass is measured to be $m_t = 173.5 \pm 0.7 (stat.) \pm 1.3 (syst.)$ GeV.CMS-CR-2013-025oai:cds.cern.ch:15101352013-01-25 |
spellingShingle | Detectors and Experimental Techniques Schlieckau, Eike Steffen Measurement of the top-quark mass with all-jets final states in pp collisions at 7 TeV |
title | Measurement of the top-quark mass with all-jets final states in pp collisions at 7 TeV |
title_full | Measurement of the top-quark mass with all-jets final states in pp collisions at 7 TeV |
title_fullStr | Measurement of the top-quark mass with all-jets final states in pp collisions at 7 TeV |
title_full_unstemmed | Measurement of the top-quark mass with all-jets final states in pp collisions at 7 TeV |
title_short | Measurement of the top-quark mass with all-jets final states in pp collisions at 7 TeV |
title_sort | measurement of the top-quark mass with all-jets final states in pp collisions at 7 tev |
topic | Detectors and Experimental Techniques |
url | http://cds.cern.ch/record/1510135 |
work_keys_str_mv | AT schlieckaueikesteffen measurementofthetopquarkmasswithalljetsfinalstatesinppcollisionsat7tev |