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Measurement of Inclusive W and Z Boson Production Cross Sections in pp Collisions at √s = 8 TeV

Author(s)
Apyan, Aram; Busza, Wit; Butz, Erik M.; Cali, Ivan Amos; Chan, M.; Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Kim, Y.; Klute, Markus; Lai, Yue Shi; Ma, Teng; Nahn, Steven; Paus, Christoph M. E.; Ralph, Duncan Kelley; Stephans, George S. F.; Sung, Kevin Kai Hong; velicanu, Dragos Alexandru; Wyslouch, Boleslaw; Yilmaz, Yetkin; Yoon, A. S.; Zanetti, Marco; Velicanu, Dragos Alexandru; Dutta, Valentina; Levin, Andrew Michael; Roland, Christof E; Sumorok, Konstanty C; Luckey Jr, P David; Roland, Gunther M; Stoeckli, Fabian; Wolf, Roger; Yang, Mingming; Wyslouch, Victoria; Bauer, Gerry P; ... Show more Show less
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Abstract
A measurement of total and fiducial inclusive W and Z boson production cross sections in pp collisions at √s = 8  TeV is presented. Electron and muon final states are analyzed in a data sample collected with the CMS detector corresponding to an integrated luminosity of 18.2 ± 0.5  pb[superscript −1]. The measured total inclusive cross sections times branching fractions are σ(pp → WX) × B(W → ℓν) = 12.21 ± 0.03(stat) ± 0.24(syst) ± 0.32(lum)  nb and σ(pp → ZX) × B(Z → ℓ[superscript +]ℓ[superscript −]) = 1.15 ± 0.01(stat) ± 0.02(syst) ± 0.03(lum)  nb for the dilepton mass in the range of 60—120 GeV. The measured values agree with next-to-next-to-leading-order QCD cross section calculations. Ratios of cross sections are reported with a precision of 2%. This is the first measurement of inclusive W and Z boson production in proton-proton collisions at √s = 8  TeV.
Date issued
2014-05
URI
http://hdl.handle.net/1721.1/88729
Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science; Massachusetts Institute of Technology. School of Science
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Chatrchyan, S., V. Khachatryan, A. M. Sirunyan, A. Tumasyan, W. Adam, T. Bergauer, M. Dragicevic, et al. “Measurement of Inclusive W and Z Boson Production Cross Sections in pp Collisions at √s = 8 TeV” Physical Review Letters 112, no. 19 (May 2014). © 2014 CERN, for the CMS Collaboration
Version: Final published version
ISSN
0031-9007
1079-7114

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