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

Abstract

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 $K^{\ast -}{e}^{+}\nu$, 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.

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

References in corpus (2)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Heavy --> Light semileptonic decays of pseudoscalar mesons from lattice QCD