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Observation of WZγ production and constraints on new physics scenarios in proton-proton collisions at sqrt{s} = 13 TeV
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Observation of WZγ production and constraints on new physics scenarios in proton-proton collisions at sqrt{s} = 13 TeV
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A measurement of the WZ$\gamma$ triboson production cross section is presented. The analysis is based on a data sample of proton-proton collisions at a center-of-mass energy of $\sqrt{s}$ = 13 TeV recorded with the CMS detector at the LHC, corresponding to an integrated luminosity of 138 fb$^{-1}$. The analysis focuses on the final state with three charged leptons, $\ell^\pm\nu\ell^+\ell^-$, where $\ell$ = e or $\mu$, accompanied by an additional photon. The observed (expected) significance of the WZ$\gamma$ signal is 5.4 (3.8) standard deviations. The cross section is measured in a fiducial region, where events with an $\ell$ originating from a tau lepton decay are excluded, to be 5.48 $\pm$ 1.11 fb, which is compatible with the prediction of 3.69 $\pm$ 0.24 fb at next-to-leading order in quantum chromodynamics. Exclusion limits are set on anomalous quartic gauge couplings and on the production cross sections of massive axion-like particles.
Forward citations
Cited by 4 Pith papers
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Observation of $W^{+}W^{-}\gamma$ production in $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector and constraints on anomalous quartic gauge-boson couplings
ATLAS reports the observation of W⁺W⁻γ triboson production with 5.9σ significance and derives constraints on anomalous quartic gauge-boson couplings via effective field theory.
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Combined effective field theory interpretation of measurements sensitive to quartic gauge boson couplings in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
Combined ATLAS VBS and triboson data constrain 17 Éboli-model dimension-8 Wilson coefficients for anomalous quartic gauge couplings, with and without unitarity clipping.
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Combined effective field theory interpretation of measurements sensitive to quartic gauge boson couplings in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
Combined ATLAS VBS and triboson data constrain 17 Éboli-model dimension-8 Wilson coefficients for anomalous quartic gauge couplings, with and without unitarity bounds.
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Probing the limits on anomalous quartic gauge couplings via $ZZ\gamma$ production in the $\ell\ell\nu\nu\gamma$ channel at FCC-hh
Simulated ZZγ production at FCC-hh (100 TeV, 30 ab^-1) yields 95% C.L. projected limits on fT0, fT8, fT9, fM2/Λ^4 between 1.65×10^-3 and 8.97×10^-3 TeV^-4, an order of magnitude beyond current LHC limits.
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