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Measurement of inclusive W and Z boson production cross sections in pp collisions at sqrt(s) = 8 TeV

Abstract : A measurement of total and fiducial inclusive W and Z boson production cross sections in pp collisions at sqrt(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 inverse picobarns. The measured total inclusive cross sections times branching fractions are sigma(pp to W X) B(W to l nu ) = 12.21 +/- 0.03 (stat.) +/- 0.24 (syst.) +/- 0.32 (lum.) nb and sigma(pp to Z X) B(Z to l+ l-) = 1.15 +/- 0.01 (stat.) +/- 0.02 (syst.) +/- 0.03 (lum.) nb for the dilepton mass in the range of 60 to 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 sqrt(s)=8 TeV.
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http://hal.in2p3.fr/in2p3-00942544
Contributor : Sylvie Flores <>
Submitted on : Thursday, February 6, 2014 - 7:18:58 AM
Last modification on : Friday, June 5, 2020 - 10:52:06 AM

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S. Chatrchyan, S. Baffioni, F. Beaudette, L. Benhabib, L. Bianchini, et al.. Measurement of inclusive W and Z boson production cross sections in pp collisions at sqrt(s) = 8 TeV. Physical Review Letters, American Physical Society, 2014, 112, pp.191802. ⟨10.1103/PhysRevLett.112.191802⟩. ⟨in2p3-00942544⟩

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