Abstract
We present the first results from a recent pilot run of the CLEO-c experiment. This new program investigates the physics of charm mesons and charmonium resonances. We begin with results on two-body decays of the ψ(2S); first observations of some highly-suppressed "PV" modes are presented. Next, data taken at the ψ(3770) are used for a variety of studies of D meson decays in a very clean environment. We report the [Formula: see text] cross-section at the ψ(3770), extract fD from the first significant sample of D+→μ+νμ decays, and investigate both inclusive and exclusive semileptonic D decays.
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