Measurement of the W → ℓν and Z/γ → ℓℓ production cross sections in proton-proton collisions at s√=7TeV with the ATLAS detector
2010 | journal article. A publication with affiliation to the University of Göttingen.
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Measurement of the W → ℓν and Z/γ → ℓℓ production cross sections in proton-proton collisions at s√=7TeV with the ATLAS detector
Aad, G.; Abbott, B.; Abdallah, J.; Abdinov, O.; Aben, R.; Abolins, M. & AbouZeid, O. S. et al. (2010)
Journal of High Energy Physics, 60. DOI: https://doi.org/10.1007/JHEP12(2010)060
Documents & Media
Details
- Authors Group
- ATLAS Collaboration
The authors list is uncomplete: - Authors
- Aad, G.; Abbott, B.; Abdallah, J.; Abdinov, O.; Aben, R.; Abolins, M.; AbouZeid, O. S.; Abramowicz, H.; Abreu, H.; Abreu, R.; Zwalinski, L.
- Abstract
- First measurements of the W → ℓν and Z/γ → ℓℓ (ℓ = e, μ) production cross sections in proton-proton collisions at s√=7TeV are presented using data recorded by the ATLAS experiment at the LHC. The results are based on 2250 W → ℓν and 179 Z/γ → ℓℓ candidate events selected from a data set corresponding to an integrated luminosity of approximately 320 nb. The measured total W and Z/γ ∗-boson production cross sections times the respective leptonic branching ratios for the combined electron and muon channels are σtotW. BR(W → ℓν) = 9.96 ± 0.23(stat) ± 0.50(syst) ± 1.10(lumi) nb and σtotZ/γ BR(Z/γ ∗ → ℓℓ) = 0.82 ± 0.06 (stat) ± 0.05 (syst) ± 0.09(lumi) nb (within the invariant mass window 66 < m ℓℓ < 116GeV). The W/Z cross-section ratio is measured to be 11.7 ± 0.9(stat) ± 0.4(syst). In addition, measurements of the W + and W − production cross sections and of the lepton charge asymmetry are reported. Theoretical predictions based on NNLO QCD calculations are found to agree with the measurements.
- Issue Date
- 2010
- Journal
- Journal of High Energy Physics
- Organization
- Fakultät für Physik
- ISSN
- 1029-8479
- Language
- English