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Measurements of the Z boson via the two-lepton channels in heavy ion collisions in ATLAS
The ATLAS experiment has observed 1995 $Z$ boson candidates with 148,imb~ of integrated luminosity obtained in the 2011 LHC PbPb~ run at sqn=2.76,TeV. The $Z$ bosons are reconstructed via di-electron and di-muon decay channels. The results from both channels are consistent with each other and are co...
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Lenguaje: | eng |
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2012
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Acceso en línea: | http://cds.cern.ch/record/1452631 |
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author | Citron, Z |
author_facet | Citron, Z |
author_sort | Citron, Z |
collection | CERN |
description | The ATLAS experiment has observed 1995 $Z$ boson candidates with 148,imb~ of integrated luminosity obtained in the 2011 LHC PbPb~ run at sqn=2.76,TeV. The $Z$ bosons are reconstructed via di-electron and di-muon decay channels. The results from both channels are consistent with each other and are combined. The background is less than 3% of our selected sample. Within the statistical and systematic uncertainties, the $Z$ boson yield integrated over $|y|<2.5$ is proportional to the number of binary collisions estimated by the Glauber model. The elliptic flow coefficient of the azimuthal distribution of the $Z$ boson with respect to the event plane is consistent with zero, in line with expectations of production in unmodified hard scattering. |
id | cern-1452631 |
institution | Organización Europea para la Investigación Nuclear |
language | eng |
publishDate | 2012 |
record_format | invenio |
spelling | cern-14526312019-09-30T06:29:59Zhttp://cds.cern.ch/record/1452631engCitron, ZMeasurements of the Z boson via the two-lepton channels in heavy ion collisions in ATLASDetectors and Experimental TechniquesThe ATLAS experiment has observed 1995 $Z$ boson candidates with 148,imb~ of integrated luminosity obtained in the 2011 LHC PbPb~ run at sqn=2.76,TeV. The $Z$ bosons are reconstructed via di-electron and di-muon decay channels. The results from both channels are consistent with each other and are combined. The background is less than 3% of our selected sample. Within the statistical and systematic uncertainties, the $Z$ boson yield integrated over $|y|<2.5$ is proportional to the number of binary collisions estimated by the Glauber model. The elliptic flow coefficient of the azimuthal distribution of the $Z$ boson with respect to the event plane is consistent with zero, in line with expectations of production in unmodified hard scattering.ATL-PHYS-SLIDE-2012-301oai:cds.cern.ch:14526312012-05-30 |
spellingShingle | Detectors and Experimental Techniques Citron, Z Measurements of the Z boson via the two-lepton channels in heavy ion collisions in ATLAS |
title | Measurements of the Z boson via the two-lepton channels in heavy ion collisions in ATLAS |
title_full | Measurements of the Z boson via the two-lepton channels in heavy ion collisions in ATLAS |
title_fullStr | Measurements of the Z boson via the two-lepton channels in heavy ion collisions in ATLAS |
title_full_unstemmed | Measurements of the Z boson via the two-lepton channels in heavy ion collisions in ATLAS |
title_short | Measurements of the Z boson via the two-lepton channels in heavy ion collisions in ATLAS |
title_sort | measurements of the z boson via the two-lepton channels in heavy ion collisions in atlas |
topic | Detectors and Experimental Techniques |
url | http://cds.cern.ch/record/1452631 |
work_keys_str_mv | AT citronz measurementsofthezbosonviathetwoleptonchannelsinheavyioncollisionsinatlas |