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Title
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Measurement of the inclusive W and Z production cross sections in pp collisions at = 7 TeV with the CMS experiment
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Author
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Institution/Organisation
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CMS Collaboration
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Abstract
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| A measurement of inclusive W and Z production cross sections in pp collisions at s=7 TeV is presented. The electron and muon decay channels are analyzed in a data sample collected with the CMS detector at the LHC and corresponding to an integrated luminosity of 36 pb−1. The measured inclusive cross sections are σ(pp → WX) × W = 10.31 ± 0.02 (stat.) ± 0.09 (syst.) ± 0.10 (th.) ± 0.41 (lumi.) nb and σ(pp → ZX) × Z+− = 0.974 ± 0.007 (stat.) ± 0.007 (syst.) ± 0.018 (th.) ± 0.039 (lumi.) nb, limited to the dilepton invariant mass range 60 to 120 GeV. The luminosity-independent cross section ratios are (σ(pp → WX) × W /(σ(pp → ZX) × Z+− = 10.54 ± 0.07 (stat.) ± 0.08 (syst.) ± 0.16 (th.) and (σ(pp → W+ X) × W++ /(σ(pp → W− X) × W−− = 1.421 ± 0.006 (stat.) ± 0.014 (syst.) ± 0.029 (th.). The measured values agree with next-to-next-to-leading order QCD cross section calculations based on recent parton distribution functions. |
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Language
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English
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Source (journal)
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Journal of high energy physics. - Bristol
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Publication
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Bristol
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2011
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ISSN
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1126-6708
1029-8479
[online]
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DOI
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10.1007/JHEP10(2011)132
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Volume/pages
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10
(2011)
, p. 1-76
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Article Reference
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132
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ISI
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000296917300056
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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Full text (open access)
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