Compact Muon Solenoid
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| CMS-PAS-SMP-20-001 | ||
| Evidence for vector boson scattering in events with four leptons and two jets in proton-proton collisions at $\sqrt{s}=$ 13 TeV | ||
| CMS Collaboration | ||
| May 2020 | ||
| Abstract: A search for the electroweak production of two Z bosons in association with two jets and constraints on anomalous quartic gauge couplings are presented. The analysis is based on a data sample of proton-proton collisions at $\sqrt{s}=$ 13 TeV collected with the CMS detector in 2016, 2017 and 2018, and corresponding to an integrated luminosity of 137.1 fb$^{-1}$. The search is performed in the fully leptonic final state $\mathrm{ZZ}\to\ell\ell\ell'\ell'$, where $\ell,\ell' = $ e, $\mu$. The electroweak production of two jets in association with two Z bosons is measured with an observed (expected) significance of 4.0 (3.5) standard deviations. Fiducial cross sections for the electroweak production are measured and the fiducial cross section is $\sigma_{\mathrm{EW}}(\mathrm{pp}\rightarrow ZZ\mathrm{jj}\rightarrow\ell\ell\ell'\ell'\mathrm{jj}) = $ 0.33 $^{+0.11}_{-0.10}$ (stat) $^{+0.04}_{-0.03}$ (syst) fb in the most inclusive volume, in agreement with the standard model prediction. Limits on anomalous quartic gauge couplings are derived in terms of the effective field theory operators T0-2 and T8-9. | ||
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Links:
CDS record (PDF) ;
inSPIRE record ;
CADI line (restricted) ;
These preliminary results are superseded in this paper, PLB 812 (2020) 135992. The superseded preliminary plots can be found here. |
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Compact Muon Solenoid LHC, CERN |
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