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- W4385681444 abstract "This letter reports the observation of $W(ellnu)gammagamma$ production in proton-proton collisions. This measurement uses the full Run 2 sample of events recorded at a center of mass energy of $sqrt{s} = 13$ TeV by the ATLAS detector at the LHC, corresponding to an integrated luminosity of 140 fb$^{-1}$. Events with a leptonically-decaying $W$ boson and at least two photons are considered. The background-only hypothesis is rejected with an observed and expected significance of $5.6$ standard deviations, corresponding to the observation of this process. The inclusive fiducial production cross section of $W(enu)gammagamma$ and $W(munu)gammagamma$ events is measured to be $sigma_{mathrm{fid}} = 12.2 pm 1.0 (mathrm{stat}) substack{+1.9 -1.8} (mathrm{syst}) pm 0.1 (mathrm{lumi})$ fb, in agreement with the Standard Model prediction." @default.
- W4385681444 created "2023-08-09" @default.
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- W4385681444 date "2023-08-06" @default.
- W4385681444 modified "2023-10-16" @default.
- W4385681444 title "Observation of $Wgammagamma$ triboson production in proton-proton collisions at $sqrt{s} = 13$ TeV with the ATLAS detector" @default.
- W4385681444 doi "https://doi.org/10.48550/arxiv.2308.03041" @default.
- W4385681444 hasPublicationYear "2023" @default.
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