Interlayer Charge Disproportionation in the Layered Organic Superconductor κH−(DMEDO−TSeF)2[Au(CN)4](THF) with Polar Dielectric Insulating Layers
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The first observation of the decayand measurement of the branching ratio oftoare presented. Theandmesons are reconstructed using their dimuon decay modes. The results are based on proton-proton colliding beam data from the LHC collected by the CMS experiment atin 2016–2018, corresponding to an integrated luminosity of. The branching fraction ratio is measured to be, where the last uncertainty comes from the uncertainties in the branching fractions of the charmonium states. New measurements of thebaryon mass and natural width are also presented, using thefinal state, where thebaryon is reconstructed through the decays,,, and. Finally, the fraction ofbaryons produced fromdecays is determined.
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