CMS-SMP-12-007

CMS-SMP-12-007 ; CERN-PH-EP-2012-336
Measurement of the ZZ production cross section and search for anomalous couplings in $2 \ell 2 \ell^{\prime}$ final states in pp collisions at $\sqrt{s}$ = 7 TeV
CMS Collaboration
20 November 2012
J. High Energy Phys. 01 (2013) 063
Abstract: A measurement is presented of the ZZ production cross section in the ZZ to $2 \ell 2 \ell^{ \prime }$ decay mode with $\ell = \mathrm{e}, \mu$ and $\ell^{\prime} = \mathrm{e}, \mu, \tau$ in proton-proton collisions at $\sqrt{s}$ = 7 TeV with the CMS experiment at the LHC. Results are based on data corresponding to an integrated luminosity of 5.0 inverse femtobarns. The measured cross section $\sigma( \mathrm{ pp \to ZZ } ) =$ 6.24 $^{+0.86}_{-0.80}$ (stat.) $^{+0.41}_{-0.32}$ (syst.) $\pm$ 0.14 (lumi.) pb is consistent with the standard model predictions. The following limits on ZZZ and ZZ gamma anomalous trilinear gauge couplings are set at 95% confidence level: -0.011 $\lt$ f[4;Z] $\lt$ 0.012, -0.012 $\lt$ f[5;Z] $\lt$ 0.012, -0.013 $\lt$ f[4; $\gamma$ ] $\lt$ 0.015, and -0.014 $\lt$ f[5, $\gamma$ ] $\lt$ 0.014.
Links: e-print arXiv:1211.4890 [hep-ex] (PDF) ; CDS record ; inSPIRE record ; Public twiki page ; HepData record ; CADI line (restricted) ;

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