Measurements of Charm and Charmonium Decays at BES

By analyzing data collected with the BES-II detector at the BEPC collider, a lot of charm and charmonium decays were studied. We directly measured the branching fractions for to be (15.1 ± 5.6 ± 1.8)%, and searched for 39 decay modes of ψ(3770) → light hadrons. We firstly observed anomalous line-shape of cross sections near 3.770 GeV. The branching fractions for the neutral and charged D inclusive semileptonic decays are directly measured. We observed Y(2175) in the decay J/ψ→ηΦf0(980). A lot of channels for ψ(2s)→γ+hadrons with the invariant mass of hadrons below 2.9 GeV were studied.