CMS-PAS-SMP-15-005

CMS-PAS-SMP-15-005
Measurement of the ZZ production cross section in $\ell \ell \ell' \ell'$ decays in pp collisions at $\sqrt{s} =$ 13 TeV
CMS Collaboration
December 2015

Abstract: The ZZ production cross section is measured in proton-proton collisions at center-of-mass energy 13 TeV with the CMS detector at the LHC. A data sample corresponding to an integrated luminosity of 1.34 fb $^{-1}$ is used. The cross section $\sigma( \mathrm{pp \to ZZ } )$ is inferred from measurements performed in the leptonic decay modes $\mathrm{ZZ} \to \ell \ell \ell' \ell'$ , where $\ell$ , $\ell' = \mathrm{e}$ , $\mu$ . The measured cross section, $\sigma(\mathrm{pp \to ZZ } ) =$ 16.7 $^{+2.9}_{-2.6}$ (stat) $^{+0.7}_{-0.5}$ (syst) $\pm$ 0.3 (theo) $\pm$ 0.8 (lum) pb, for both Z bosons produced in the mass region 60 $< m_{\mathrm{Z}} <$ 120 GeV, is consistent with standard model predictions.
Links: CDS record (PDF) ; inSPIRE record ; CADI line (restricted) ;

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