Compact Muon Solenoid
LHC, CERN
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| CMS-PAS-SMP-13-005 | ||
| Measurement of the ZZ production cross section and anomalous trilinear | ||
| CMS Collaboration | ||
| 2013 | ||
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Abstract:
Measurements are presented of the ZZ production cross sections and anomalous triple gauge couplingsin proton-proton collisions at $\sqrt{s} = 8~\rm{TeVa}$ with the CMS experiment at the LHC in a data sample corresponding to an integrated luminosity of 19.6 fb$^{-1}$. The measurements are performed in the leptonic decay modes $\rm{ZZ} \rightarrow \ell\ell\ell'\ell'$, where $\ell$ = e, $\mu$ and $\ell'$ = e, $\mu$, $\tau$. The measured cross section $\sigma ( \rm{pp} \to \rm{ZZ}) = 7.7^{+0.5}_{-0.5} ~(\rm{stat}) ^{+0.5} _{-0.4}~(\rm{syst}) \pm 0.4~ (\rm{theo)} \pm 0.3~(\rm{lum})~\rm{pb}$ for both Z bosons produced in the mass region < m_{\rm{Z}} < 120~\rm{GeV}$, is consistent with standard model predictions. Differential cross sections are measured and well described by the theoretical predictions. A limit extraction on anomalous ZZZ and ZZ$\gamma$ couplings is based on the invariant mass distribution of the four-lepton system. The measured couplings: $-0.004 | ||
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Links:
CDS record (PDF) ;
inSPIRE record ;
Public twiki page ;
CADI line (restricted) ;
These preliminary results are superseded in this paper, PLB 740 (2015) 250 [Corr: PLB 757 (2016) 569]. The superseded preliminary plots can be found here. |
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Compact Muon Solenoid LHC, CERN |
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