Measurements of inclusive W and Z cross sections in pp collisions at sqrt(s)=7 TeV

Journal Article · Sat Jan 01 04:00:00 EST 2011 · Journal of High Energy Physics (Online)

DOI:https://doi.org/10.1007/JHEP01(2011)080· OSTI ID:1176782

Khachatryan, V. ^[1]; et al.,

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1. Yerevan Physics Institute (Aremenia)

Measurements of inclusive W and Z boson production cross sections in pp collisions at sqrt(s)=7 TeV are presented, based on 2.9 inverse picobarns of data recorded by the CMS detector at the LHC. The measurements, performed in the electron and muon decay channels, are combined to give sigma(pp to WX) times B(W to muon or electron + neutrino) = 9.95 \pm 0.07(stat.) \pm 0.28(syst.) \pm 1.09(lumi.) nb and sigma(pp to ZX) times B(Z to oppositely charged muon or electron pairs) = 0.931 \pm 0.026(stat.) \pm 0.023(syst.) \pm 0.102(lumi.) nb. Theoretical predictions, calculated at the next-to-next-to-leading order in QCD using recent parton distribution functions, are in agreement with the measured cross sections. Ratios of cross sections, which incur an experimental systematic uncertainty of less than 4%, are also reported.

• Research Organization: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
• Contributing Organization: CMS Colloboration
• OSTI ID: 1176782
• Report Number(s): CERN-PH-EP-2010-050; CMS-EWK-10-002; FERMILAB-PUB-10-623-CMS; ArticleNumber: 80; arXiv eprint number arXiv:1012.2466
• Journal Information: Journal of High Energy Physics (Online), Journal Name: Journal of High Energy Physics (Online) Journal Issue: 1 Vol. 2011; ISSN 1029-8479
• Publisher: Springer Berlin
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS