Abstract

We report results of experiments performed with the KEDR detector at the VEPP-4M e+e−e^+e^- collider. They include final results for the mass and other parameters of the J/ψJ/ψ, ψ(2S)ψ(2S) and ψ(3770)ψ(3770) and J/ψ→γηcJ/ψ\toγη_c branching fraction determination.

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