Inclusive W and Z production in the forward region at √s=7 TeV
Measurements of inclusive W and Z boson production cross-sections in pp collisions at s√=7TeVs=7TeV \sqrt {s} = 7\,{\text{TeV}} using final states containing muons are presented. The data sample corresponds to an integrated luminosity of 37 pb−1 collected with the LHCb detector. The W and Z bosons a...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
June 11, 2012
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| In: |
Journal of high energy physics
Year: 2012, Heft: 6 |
| ISSN: | 1029-8479 |
| DOI: | 10.1007/JHEP06(2012)058 |
| Online-Zugang: | Verlag, Volltext: http://dx.doi.org/10.1007/JHEP06(2012)058 Verlag, Volltext: https://doi.org/10.1007/JHEP06(2012)058 
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| Verfasserangaben: | the LHCb Collaboration |
MARC
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| 245 | 1 | 0 | |a Inclusive W and Z production in the forward region at √s=7 TeV |c the LHCb Collaboration |
| 246 | 3 | 0 | |a sqrt |
| 246 | 3 | 3 | |a Inclusive W and Z production in the forward region at square root s = 7TeV |
| 264 | 1 | |c June 11, 2012 | |
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| 500 | |a The LHCb Collaboration: R. Aaij, A. Adametz, S. Bachmann, A. Bien, J. Blouw, M. Britsch, A. Comerma-Montells, F. Dordei, F. Eisele, C. Fäber, S. Hansmann-Menzemer, T. Hartmann, A. Jaeger, K. Kreplin, G. Krocker, P. Krokovny, C. Langenbruch, C. Linn, J. Marks, M. Meissner, T. Nikodem, P. Seyfert, S. Stahl, J. v. Tilburg, U. Uwer, S. Wandernoth, D. Wiedner, A. Zhelezov [und weitere] | ||
| 500 | |a Gesehen am 30.10.2018 | ||
| 520 | |a Measurements of inclusive W and Z boson production cross-sections in pp collisions at s√=7TeVs=7TeV \sqrt {s} = 7\,{\text{TeV}} using final states containing muons are presented. The data sample corresponds to an integrated luminosity of 37 pb−1 collected with the LHCb detector. The W and Z bosons are reconstructed from muons with a transverse momentum above 20 GeV/c and pseudorapidity between 2.0 and 4.5, and, in the case of the Z cross-section, a dimuon invariant mass between 60 and 120 GeV/c2. The cross-sections are measured to be 831 ± 9 ± 27 ± 29pb for W +, 656 ± 8 ± 19 ± 23 for W − and 76.7 ± 1.7 ± 3.3 ± 2.7pb for Z, where the first uncertainty is statistical, the second is systematic and the third is due to the luminosity. Differential cross-sections, W and Z cross-section ratios and the lepton charge asymmetry are also measured in the same kinematic region. The ratios are determined to be σW+→μ+ν/σW−→μ−ν¯¯¯=1.27±0.02±0.01σW+→μ+ν/σW−→μ−ν¯=1.27±0.02±0.01 {\sigma_{{{W^{ + }} \to {\mu^{ + }}\nu }}}/{\sigma_{{{W^{ - }} \to {\mu^{ - }}\overline \nu }}} = 1.27\pm 0.02\pm 0.01 and (σW+→μ+ν+σW−→μ−ν¯¯¯)/σZ→μμ=19.4±0.5±0.9(σW+→μ+ν+σW−→μ−ν¯)/σZ→μμ=19.4±0.5±0.9 \left( {{\sigma_{{{W^{ + }} \to {\mu^{ + }}\nu }}} + {\sigma_{{{W^{ - }} \to {\mu^{ - }}\overline \nu }}}} \right)/{\sigma_{{Z \to \mu \mu }}} = 19.4\pm 0.5\pm 0.9 . The results are in general agreement with theoretical predictions, performed at next-to-next-to-leading order in QCD using recently calculated parton distribution functions. Open image in new window | ||
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