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Measurement of Zγγ production in pp collisions at sqrt{s}= 13 TeV with the ATLAS detector
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Measurement of Zγγ production in pp collisions at sqrt{s}= 13 TeV with the ATLAS detector
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Cross-sections for the production of a $Z$ boson in association with two photons are measured in proton$-$proton collisions at a centre-of-mass energy of 13 TeV. The data used correspond to an integrated luminosity of 139 fb$^{-1}$ recorded by the ATLAS experiment during Run 2 of the LHC. The measurements use the electron and muon decay channels of the $Z$ boson, and a fiducial phase-space region where the photons are not radiated from the leptons. The integrated $Z(\rightarrow\ell\ell)\gamma\gamma$ cross-section is measured with a precision of 12% and differential cross-sections are measured as a function of six kinematic variables of the $Z\gamma\gamma$ system. The data are compared with predictions from MC event generators which are accurate to up to next-to-leading order in QCD. The cross-section measurements are used to set limits on the coupling strengths of dimension-8 operators in the framework of an effective field theory.
Forward citations
Cited by 3 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
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Electroweak diboson production in association with a high-mass dijet system in semileptonic final states from $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector
Electroweak diboson plus high-mass dijet production observed at 7.4 sigma with signal strength 1.28, plus first semileptonic-channel limits on S02, T0 and M0 Wilson coefficients.
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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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