Measurement of the W+W- and ZZ production cross sections in pp collisions at root s=8 TeV
CMS Collaboration (ukupan broj autora: 2212)
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The W+W- and ZZ production cross sections are measured in proton-proton collisions at root s = 8 TeV with the CMS experiment at the LHC in data samples corresponding to an integrated luminosity of up to 5.3 fb(-1). The measurements are performed in the leptonic decay modes W+W- - GT lvl v and ZZ - GT 2l2l, where l = e, mu and l(l ) = e, mu, tau. The measured cross sections sigma (pp - GT W+W-) =, 69.9 +/- 2.8 (stat.) +/- 5.6 (syst.) 3.1 +/- (lum.) pb and sigma (pp - GT ZZ) = 8.4 +/- 1.0 (stat) +/- 0.7 (syst) +/- 0.4 (lum.) pb, for both Z bosons produced in the mass region 60 LT m(Z) LT 120 GeV, are consistent with standard model predictions. These are the first measurements of the diboson production cross sections at root s = 8 TeV. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.
Keywords:CMS / Physics / W and Z pair production
Source:Physics Letters B, 2013, 721, 4-5, 190-211
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