Measurements of Absolute Branching Fractions for Exclusive $D^0$ Semileptonic Decays

Physics – High Energy Physics – High Energy Physics - Experiment

Scientific paper

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5 pages and 3 figures. Talk given at DPF'04, UC Riverside, CA

Scientific paper

10.1142/S0217751X05027072

Based on a data sample of 60 pb$^{-1}$ collected at the $\psi(3770)$ resonance with the CLEO-c detector at CESR, we present improved measurements of absolute branching fractions for exclusive $D^0$ semileptonic decays into $K^-e^+\nu$, $\pi^-e^+\nu$ and $K^{*-}e^+\nu$, and the first observation and measurement of $D^0 \to \rho^-e^+\nu$. The determinations of the CKM matrix elements $V_{cs}$ and $V_{cd}$ are reviewed.

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