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Measurement of the electron reconstruction and identification efficiencies in ATLAS
Isolated, high-energy electrons constitute a very clean signature at hadron collider experiments. For final states of many Standard Model processes, as well as for physics beyond the Standard Model, electrons are key signature. A precise knowledge of the efficiency to correctly reconstruct and ident...
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Lenguaje: | eng |
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2014
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Acceso en línea: | http://cds.cern.ch/record/1698057 |
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author | Sommer, P |
author_facet | Sommer, P |
author_sort | Sommer, P |
collection | CERN |
description | Isolated, high-energy electrons constitute a very clean signature at hadron collider experiments. For final states of many Standard Model processes, as well as for physics beyond the Standard Model, electrons are key signature. A precise knowledge of the efficiency to correctly reconstruct and identify these electrons is thus important. In this contribution the measurement of these efficiencies is described. It is performed with a tag-and-probe method using $Z$ and $J/\psi$ decays to electrons in $pp$ collisions recorded in 2012 at $\sqrt{s}=8$~TeV, corresponding to an integrated luminosity of $L=20.3\,\mathrm{fb}^{-1}$. The combination of the measurements results in identification efficiencies determined with an accuracy of the order of one percent and better for electrons with a transverse energy of $E_{\mathrm{T}}>30$~GeV. |
id | cern-1698057 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2014 |
record_format | invenio |
spelling | cern-16980572019-09-30T06:29:59Zhttp://cds.cern.ch/record/1698057engSommer, PMeasurement of the electron reconstruction and identification efficiencies in ATLASDetectors and Experimental TechniquesIsolated, high-energy electrons constitute a very clean signature at hadron collider experiments. For final states of many Standard Model processes, as well as for physics beyond the Standard Model, electrons are key signature. A precise knowledge of the efficiency to correctly reconstruct and identify these electrons is thus important. In this contribution the measurement of these efficiencies is described. It is performed with a tag-and-probe method using $Z$ and $J/\psi$ decays to electrons in $pp$ collisions recorded in 2012 at $\sqrt{s}=8$~TeV, corresponding to an integrated luminosity of $L=20.3\,\mathrm{fb}^{-1}$. The combination of the measurements results in identification efficiencies determined with an accuracy of the order of one percent and better for electrons with a transverse energy of $E_{\mathrm{T}}>30$~GeV.ATL-PHYS-PROC-2014-035oai:cds.cern.ch:16980572014-05-04 |
spellingShingle | Detectors and Experimental Techniques Sommer, P Measurement of the electron reconstruction and identification efficiencies in ATLAS |
title | Measurement of the electron reconstruction and identification efficiencies in ATLAS |
title_full | Measurement of the electron reconstruction and identification efficiencies in ATLAS |
title_fullStr | Measurement of the electron reconstruction and identification efficiencies in ATLAS |
title_full_unstemmed | Measurement of the electron reconstruction and identification efficiencies in ATLAS |
title_short | Measurement of the electron reconstruction and identification efficiencies in ATLAS |
title_sort | measurement of the electron reconstruction and identification efficiencies in atlas |
topic | Detectors and Experimental Techniques |
url | http://cds.cern.ch/record/1698057 |
work_keys_str_mv | AT sommerp measurementoftheelectronreconstructionandidentificationefficienciesinatlas |