Observation of D+ to eta e+ nue
Abstract
Using a 281 pb-1 data sample collected at the psi(3770) resonance with the CLEO-c detector at the Cornell Electron Storage Ring, we report the first observation of D+ to eta e+ nue. We also set upper limits for D+ to eta' e+ nue and D+ to phi e+ nue that are about two orders of magnitude more restrictive than those obtained by previous experiments.
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