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$W$ and $Z$ Production in $pp$ Collisions at 7 TeV with the ATLAS Experiment at the LHC
The observation of W→lν and Z→ll (l=e,μ) bosons and a measurement of the production cross sections in proton proton collisions at ECM = 7 TeV are presented using data from the ATLAS experiment at the LHC. Results are based on 118 W and 125 Z candidate events corresponding to an integrated luminosity...
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| Lenguaje: | eng |
| Publicado: |
2010
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| Acceso en línea: | http://cds.cern.ch/record/1303590 |
| _version_ | 1780921108155858944 |
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| author | Martinez Outschoorn, V.I. |
| author_facet | Martinez Outschoorn, V.I. |
| author_sort | Martinez Outschoorn, V.I. |
| collection | CERN |
| description | The observation of W→lν and Z→ll (l=e,μ) bosons and a measurement of the production cross sections in proton proton collisions at ECM = 7 TeV are presented using data from the ATLAS experiment at the LHC. Results are based on 118 W and 125 Z candidate events corresponding to an integrated luminosity of about 17nb-1 and 225 nb-1 respectively. The measured cross sections are σ(W→lν) = 9.3 ± 0.9 (stat) ± 0.6 (syst) ± 1.0 (lumi) nb and σ(Z/γ*→ll, 66≤Mll≤116) = 0.83 ± 0.07 (stat) ± 0.06 (syst) ± 0.09 (lumi) nb. A measurement of the W lepton charge asymmetry is also reported. A comparison with theoretical predictions based on NNLO QCD calculations shows agreement with the measurements. |
| id | cern-1303590 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2010 |
| record_format | invenio |
| spelling | cern-13035902023-03-14T16:41:44Zhttp://cds.cern.ch/record/1303590engMartinez Outschoorn, V.I.$W$ and $Z$ Production in $pp$ Collisions at 7 TeV with the ATLAS Experiment at the LHCDetectors and Experimental Techniqueshep-exParticle Physics - ExperimentThe observation of W→lν and Z→ll (l=e,μ) bosons and a measurement of the production cross sections in proton proton collisions at ECM = 7 TeV are presented using data from the ATLAS experiment at the LHC. Results are based on 118 W and 125 Z candidate events corresponding to an integrated luminosity of about 17nb-1 and 225 nb-1 respectively. The measured cross sections are σ(W→lν) = 9.3 ± 0.9 (stat) ± 0.6 (syst) ± 1.0 (lumi) nb and σ(Z/γ*→ll, 66≤Mll≤116) = 0.83 ± 0.07 (stat) ± 0.06 (syst) ± 0.09 (lumi) nb. A measurement of the W lepton charge asymmetry is also reported. A comparison with theoretical predictions based on NNLO QCD calculations shows agreement with the measurements.The observation of W and Z bosons and a measurement of the production cross sections in proton proton collisions at E_CM = 7 TeV are presented using data from the ATLAS experiment at the LHC. Results are based on 118 W -> lnu and 125 Z/gamma* -> ll (l=e,mu) candidate events corresponding to an integrated luminosity of about 17 nb^-1 and 225 nb^-1 respectively. The measured values of sigma_W x BR(W -> lnu) = 9.3 \pm 0.9 (stat) \pm 0.6 (syst) \pm 1.0 (lumi) nb and sigma_Z/gamma* x BR(Z/gamma* -> ll, 66<m_ll<116) = 0.83 \pm 0.07 (stat) \pm 0.06 (syst) \pm 0.09 (lumi) nb. A measurement of the W lepton charge asymmetry is also reported. A comparison with theoretical predictions based on NNLO QCD calculations shows agreement with the measurements.arXiv:1011.0164ATL-PHYS-PROC-2010-102oai:cds.cern.ch:13035902010-10-31 |
| spellingShingle | Detectors and Experimental Techniques hep-ex Particle Physics - Experiment Martinez Outschoorn, V.I. $W$ and $Z$ Production in $pp$ Collisions at 7 TeV with the ATLAS Experiment at the LHC |
| title | $W$ and $Z$ Production in $pp$ Collisions at 7 TeV with the ATLAS Experiment at the LHC |
| title_full | $W$ and $Z$ Production in $pp$ Collisions at 7 TeV with the ATLAS Experiment at the LHC |
| title_fullStr | $W$ and $Z$ Production in $pp$ Collisions at 7 TeV with the ATLAS Experiment at the LHC |
| title_full_unstemmed | $W$ and $Z$ Production in $pp$ Collisions at 7 TeV with the ATLAS Experiment at the LHC |
| title_short | $W$ and $Z$ Production in $pp$ Collisions at 7 TeV with the ATLAS Experiment at the LHC |
| title_sort | $w$ and $z$ production in $pp$ collisions at 7 tev with the atlas experiment at the lhc |
| topic | Detectors and Experimental Techniques hep-ex Particle Physics - Experiment |
| url | http://cds.cern.ch/record/1303590 |
| work_keys_str_mv | AT martinezoutschoornvi wandzproductioninppcollisionsat7tevwiththeatlasexperimentatthelhc |