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Measurement of the Charge Asymmetry in Top Quark Pair Production with the CMS Experiment

We present a measurement of the charge asymmetry in top quark pair production using an integrated luminosity of 1.09/fb collected with the CMS detector. Top quark pairs with a signature of one electron or muon and four or more jets, at least one of them b tagged, are selected. At LHC a small charge...

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Autor principal: Boeser, Christian
Lenguaje:eng
Publicado: 2011
Materias:
Acceso en línea:http://cds.cern.ch/record/1453409
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author Boeser, Christian
author_facet Boeser, Christian
author_sort Boeser, Christian
collection CERN
description We present a measurement of the charge asymmetry in top quark pair production using an integrated luminosity of 1.09/fb collected with the CMS detector. Top quark pairs with a signature of one electron or muon and four or more jets, at least one of them b tagged, are selected. At LHC a small charge asymmetry in the rapidity distributions of top and antitop quarks is predicted. Therein slightly broader rapidity distributions for top quarks are expected, while antitop quarks are produced more centrally and possess narrower rapidity distributions. We determine the charge asymmetry based on two different sensitive variables and the results are compared with the most precise standard model theory predictions using a dedicated unfolding technique.
id cern-1453409
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2011
record_format invenio
spelling cern-14534092019-09-30T06:29:59Zhttp://cds.cern.ch/record/1453409engBoeser, ChristianMeasurement of the Charge Asymmetry in Top Quark Pair Production with the CMS ExperimentDetectors and Experimental TechniquesWe present a measurement of the charge asymmetry in top quark pair production using an integrated luminosity of 1.09/fb collected with the CMS detector. Top quark pairs with a signature of one electron or muon and four or more jets, at least one of them b tagged, are selected. At LHC a small charge asymmetry in the rapidity distributions of top and antitop quarks is predicted. Therein slightly broader rapidity distributions for top quarks are expected, while antitop quarks are produced more centrally and possess narrower rapidity distributions. We determine the charge asymmetry based on two different sensitive variables and the results are compared with the most precise standard model theory predictions using a dedicated unfolding technique.CMS-CR-2011-366oai:cds.cern.ch:14534092011-12-29
spellingShingle Detectors and Experimental Techniques
Boeser, Christian
Measurement of the Charge Asymmetry in Top Quark Pair Production with the CMS Experiment
title Measurement of the Charge Asymmetry in Top Quark Pair Production with the CMS Experiment
title_full Measurement of the Charge Asymmetry in Top Quark Pair Production with the CMS Experiment
title_fullStr Measurement of the Charge Asymmetry in Top Quark Pair Production with the CMS Experiment
title_full_unstemmed Measurement of the Charge Asymmetry in Top Quark Pair Production with the CMS Experiment
title_short Measurement of the Charge Asymmetry in Top Quark Pair Production with the CMS Experiment
title_sort measurement of the charge asymmetry in top quark pair production with the cms experiment
topic Detectors and Experimental Techniques
url http://cds.cern.ch/record/1453409
work_keys_str_mv AT boeserchristian measurementofthechargeasymmetryintopquarkpairproductionwiththecmsexperiment