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| CMS-PAS-SMP-22-018 | ||
| Measurement of $ \mathrm{WZ}\gamma $ production and constraints on new physics scenarios in proton-proton collisions at $ \sqrt{s}= $ 13 TeV | ||
| CMS Collaboration | ||
| 23 July 2024 | ||
| Abstract: A measurement of the $ \mathrm{WZ}\gamma $ triboson production predicted by the standard model is reported. The analysis uses 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 uses the final state containing three charged leptons, $ \mathrm{WZ}\rightarrow\ell\nu\ell'\ell' $, where $ \ell, \ell' = \mathrm{e} $ or $ \mu $, plus an additional photon. The observed (expected) significance of the $ \mathrm{WZ}\gamma $ signal is 5.4 (3.8) standard deviations. The cross section is measured in a fiducial region to be 5.48 $ \pm $ 1.11 fb, which can be compared with the prediction of 3.69 $ \pm $ 0.15 $ \ (\mathrm{PDF}) \pm 0.19\ (\mathrm{scale}) $ fb at next-to-leading order in quantum chromodynamics. Exclusions limits at the 95% confidence level are placed on anomalous quartic gauge couplings and on the production of massive axion-like particles. | ||
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Links:
CDS record (PDF) ;
CADI line (restricted) ;
These preliminary results are superseded in this paper, Submitted to PRD. The superseded preliminary plots can be found here. |
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Compact Muon Solenoid LHC, CERN |
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