Studies of the misidentification probability of electrons as photons with the CMS experiment in data recorded in 2015

In this thesis the estimation of backgrounds for search analyses with photon final states arising from the misidentification of electrons as photons in the CMS detector is studied. To determine the misidentification probability, events containing a Z boson that decays into two electrons are selected...

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Autor principal: Meyer, Ralf
Lenguaje:eng
Publicado: 2016
Materias:
Particle Physics - Experiment
Acceso en línea:http://cds.cern.ch/record/2239058
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author Meyer, Ralf
author_facet Meyer, Ralf
author_sort Meyer, Ralf
collection CERN
description In this thesis the estimation of backgrounds for search analyses with photon final states arising from the misidentification of electrons as photons in the CMS detector is studied. To determine the misidentification probability, events containing a Z boson that decays into two electrons are selected and assigned to two event classes using a tag and probe method. The Z-boson resonance is then fitted with template based probability distributions for signal and background. The method is validated in simulation and the results for the first LHC Run I data recorded by CMS in 2015 are presented.
id cern-2239058
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2016
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spelling cern-22390582019-09-30T06:29:59Zhttp://cds.cern.ch/record/2239058engMeyer, RalfStudies of the misidentification probability of electrons as photons with the CMS experiment in data recorded in 2015Particle Physics - ExperimentIn this thesis the estimation of backgrounds for search analyses with photon final states arising from the misidentification of electrons as photons in the CMS detector is studied. To determine the misidentification probability, events containing a Z boson that decays into two electrons are selected and assigned to two event classes using a tag and probe method. The Z-boson resonance is then fitted with template based probability distributions for signal and background. The method is validated in simulation and the results for the first LHC Run I data recorded by CMS in 2015 are presented.CERN-THESIS-2016-204oai:cds.cern.ch:22390582016-12-14T20:13:20Z
spellingShingle Particle Physics - Experiment
Meyer, Ralf
Studies of the misidentification probability of electrons as photons with the CMS experiment in data recorded in 2015
title Studies of the misidentification probability of electrons as photons with the CMS experiment in data recorded in 2015
title_full Studies of the misidentification probability of electrons as photons with the CMS experiment in data recorded in 2015
title_fullStr Studies of the misidentification probability of electrons as photons with the CMS experiment in data recorded in 2015
title_full_unstemmed Studies of the misidentification probability of electrons as photons with the CMS experiment in data recorded in 2015
title_short Studies of the misidentification probability of electrons as photons with the CMS experiment in data recorded in 2015
title_sort studies of the misidentification probability of electrons as photons with the cms experiment in data recorded in 2015
topic Particle Physics - Experiment
url http://cds.cern.ch/record/2239058
work_keys_str_mv AT meyerralf studiesofthemisidentificationprobabilityofelectronsasphotonswiththecmsexperimentindatarecordedin2015

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