2008/10/17 by Mitchell, R. E.
#FOS: Physical sciences #High Energy Physics - Experiment (hep-ex)
paper · doi:10.48550/arxiv.0810.3231
This review briefly outlines recent experimental results from the charmonium system. These include new measurements of the M1 radiative transition rates B(ψ(1S,2S)→γηc(1S)); new insights into the mass of the ηc(1S); the observation of J/ψ(1S) decays to three photons; new measurements of the two-photon widths of the χcJ(1P); the observation of radiative decays of the χcj(1P) to light quarks; a precise measurement of the hc(1P) mass; and an update on properties of the ηc(2S). Each result adds piecemeal to our understanding of the strong force.