Probing the measurement of jet energies with the ATLAS detector using Z+jet events from proton-proton collisions at sqrt(s) = 7 TeV

The energy calibration of jets measured with the ATLAS detector at the LHC is probed in situ using the direct transverse momentum balance pT(jet)/pT(Z) between a jet in the central region of the detector (|eta| < 1.2) and a Z boson decaying into an e+e− pair. Two calibration schemes are studied u...

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Autor principal: The ATLAS collaboration
Lenguaje:eng
Publicado: 2012
Materias:
Detectors and Experimental Techniques
Acceso en línea:http://cds.cern.ch/record/1452641
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author The ATLAS collaboration
author_facet The ATLAS collaboration
author_sort The ATLAS collaboration
collection CERN
description The energy calibration of jets measured with the ATLAS detector at the LHC is probed in situ using the direct transverse momentum balance pT(jet)/pT(Z) between a jet in the central region of the detector (|eta| < 1.2) and a Z boson decaying into an e+e− pair. Two calibration schemes are studied using a data set corresponding to an integrated luminosity of 4.7 fb−1 of proton-proton collisions at a centre-of-mass energy of sqrt(s) = 7 TeV. The analysis is carried out for pT(Z) between 17 GeV and 260 GeV. The pT balance measured in the data is a few percent lower than in the simulation. The precision achieved with this in situ method is about 10% at low pT and 1% to 2% for pT > 30 GeV.
id cern-1452641
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2012
record_format invenio
spelling cern-14526412021-04-18T19:37:33Zhttp://cds.cern.ch/record/1452641engThe ATLAS collaborationProbing the measurement of jet energies with the ATLAS detector using Z+jet events from proton-proton collisions at sqrt(s) = 7 TeVDetectors and Experimental TechniquesThe energy calibration of jets measured with the ATLAS detector at the LHC is probed in situ using the direct transverse momentum balance pT(jet)/pT(Z) between a jet in the central region of the detector (|eta| < 1.2) and a Z boson decaying into an e+e− pair. Two calibration schemes are studied using a data set corresponding to an integrated luminosity of 4.7 fb−1 of proton-proton collisions at a centre-of-mass energy of sqrt(s) = 7 TeV. The analysis is carried out for pT(Z) between 17 GeV and 260 GeV. The pT balance measured in the data is a few percent lower than in the simulation. The precision achieved with this in situ method is about 10% at low pT and 1% to 2% for pT > 30 GeV.ATLAS-CONF-2012-053oai:cds.cern.ch:14526412012-05-30
spellingShingle Detectors and Experimental Techniques
The ATLAS collaboration
Probing the measurement of jet energies with the ATLAS detector using Z+jet events from proton-proton collisions at sqrt(s) = 7 TeV
title Probing the measurement of jet energies with the ATLAS detector using Z+jet events from proton-proton collisions at sqrt(s) = 7 TeV
title_full Probing the measurement of jet energies with the ATLAS detector using Z+jet events from proton-proton collisions at sqrt(s) = 7 TeV
title_fullStr Probing the measurement of jet energies with the ATLAS detector using Z+jet events from proton-proton collisions at sqrt(s) = 7 TeV
title_full_unstemmed Probing the measurement of jet energies with the ATLAS detector using Z+jet events from proton-proton collisions at sqrt(s) = 7 TeV
title_short Probing the measurement of jet energies with the ATLAS detector using Z+jet events from proton-proton collisions at sqrt(s) = 7 TeV
title_sort probing the measurement of jet energies with the atlas detector using z+jet events from proton-proton collisions at sqrt(s) = 7 tev
topic Detectors and Experimental Techniques
url http://cds.cern.ch/record/1452641
work_keys_str_mv AT theatlascollaboration probingthemeasurementofjetenergieswiththeatlasdetectorusingzjeteventsfromprotonprotoncollisionsatsqrts7tev

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