Parameters of charmonium states from KEDR

Abstract

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

5 pages, 6 figures, PhiPsi 2013, International Workshop on e+e- collisions from Phi to Psi. September 9-12, 2013, Rome, Italy