Measurement of the W → ℓν and Z/γ* → ℓℓ production cross sections in proton-proton collisions at √s = 7 TeV with the ATLAS detector
First measurements of the W → ℓν and Z/γ*→ ℓℓ (ℓ = e, μ) production cross sections in proton-proton collisions at $ \sqrt {s} = 7\;{\text{TeV}} $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...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
14 December 2010
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| In: |
Journal of high energy physics
Year: 2010, Pages: 1-65 |
| ISSN: | 1029-8479 |
| DOI: | 10.1007/JHEP12(2010)060 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1007/JHEP12(2010)060
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| Verfasserangaben: | The ATLAS Collaboration* |
MARC
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| 245 | 1 | 0 | |a Measurement of the W → ℓν and Z/γ* → ℓℓ production cross sections in proton-proton collisions at √s = 7 TeV with the ATLAS detector |c The ATLAS Collaboration* |
| 246 | 3 | 0 | |a sqrt |
| 246 | 3 | 3 | |a Measurement of the W → ℓ nu and Z/ gamma * → ℓℓ production cross sections in proton-proton collisions at square root s = 7 TeV with the ATLAS detector |
| 264 | 1 | |c 14 December 2010 | |
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| 500 | |a *The ATLAS Collaboration: G. Aad, V. Andrei, T.A. Dietzsch, P. Hanke, A. Khomich, E.-E. Kluge, A. Kugel, R. Maenner, K. Meier, F. Mueller, S. Poddar, V. Radescu, S. Schaetzel, V. Scharf, A. Schoening, H.-C. Schultz-Coulon, R. Stamen, M. Wessels [und sehr viele weitere Personen] | ||
| 500 | |a Im Titel steht der Buchstabe s unter dem Wurzelzeichen | ||
| 500 | |a Gesehen am 31.10.2022 | ||
| 520 | |a First measurements of the W → ℓν and Z/γ*→ ℓℓ (ℓ = e, μ) production cross sections in proton-proton collisions at $ \sqrt {s} = 7\;{\text{TeV}} $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 $ \sigma_W^{\text{tot}} $. BR(W → ℓν) = 9.96 ± 0.23(stat) ± 0.50(syst) ± 1.10(lumi) nb and $ \sigma_{{{Z} \left/ {\gamma } \right.}}^{\text{tot}} $BR(Z/γ∗ → ℓℓ) = 0.82 ± 0.06 (stat) ± 0.05 (syst) ± 0.09(lumi) nb (within the invariant mass window 66 < mℓℓ< 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. | ||
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