Recent Charmonium Results from BES (Talk Presented at DPF99)

Details Recent Charmonium Results from BES (Talk Presented at DPF99) Recent Charmonium Results from BES (Talk Presented at DPF99)

1999-03-17

arxiv.org/abs/hep-ex/9903036v2

Physics

High Energy Physics

High Energy Physics - Experiment

7 pages, 7 figures Corrected Table III

Scientific paper

Recent results obtained from the BES psi(2S) data are summarized, including the measurement of the branching ratio of the J/psi to leptons, B(J/psi -> l^+ l^-) = 5.87 +/- 0.04 +/- 0.09, many psi(2S) and chi_c branching ratios, information on the rho-pi puzzle, and measurements of the mass of the chi_c0, m(chi_c0) = 3414.1 +/- 0.6 +/- 0.8 MeV, and the eta_c, m(eta_c) = 2975.8 +/- 3.9 +/- 1.2 MeV.

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