Measurement of the W+W and ZZ production cross sections in pp collisions at √s = 8 TeV

S. Chatrchyan, V. Khachatryan, A. M. Sirunyan, A. Tumasyan, W. Adam, E. Aguilo, T. Bergauer, M. Dragicevic, J. Erö, C. Fabjan, M. Friedl, R. Frühwirth, V. M. Ghete, N. Hörmann, J. Hrubec, M. Jeitler, W. Kiesenhofer, V. Knünz, M. Krammer, I. KrätschmerD. Liko, I. Mikulec, M. Pernicka, D. Rabady, B. Rahbaran, C. Rohringer, H. Rohringer, R. Schöfbeck, J. Strauss, A. Taurok, W. Waltenberger, C. E. Wulz, V. Mossolov, N. Shumeiko, J. Suarez Gonzalez, S. Alderweireldt, M. Bansal, S. Bansal, T. Cornelis, E. A. De Wolf, X. Janssen, S. Luyckx, L. Mucibello, S. Ochesanu, B. Roland, R. M. Chatterjee, S. Nourbakhsh, Y. Kubota, J. Mans, R. Rusack, CMS Collaboration

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102 Scopus citations

Abstract

The W+W and ZZ production cross sections are measured in proton-proton collisions at √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 → ℓ′νℓ″ν and ZZ → 2ℓ2ℓ′, where ℓ = e, μ and ℓ′(ℓ″) = e, μ, τ. The measured cross sections σ (pp → W+W) = 69.9 ± 2.8 (stat.) ± 5.6 (syst.) ± 3.1 (lum.) pb and σ (pp → ZZ) = 8.4 ± 1.0 (stat.) ± 0.7 (syst.) ± 0.4 (lum.) pb, for both Z bosons produced in the mass region 60 < mZ < 120 GeV, are consistent with standard model predictions. These are the first measurements of the diboson production cross sections at √s=8 TeV.

Original languageEnglish (US)
Pages (from-to)190-211
Number of pages22
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume721
Issue number4-5
DOIs
StatePublished - Apr 25 2013

Keywords

  • CMS
  • Physics
  • W and Z pair production

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