The $D\to \rho$ semileptonic and radiative decays within the light-cone sum rules

Hai-Bing Fu, Long Zeng, Rong Lü +2

The measured branching ratio of the $D$ meson semileptonic decay $D\to \rho e^{+}{\nu }_e$, which is based on the $0.82\mathrm{f}{\mathrm{b}}^{-1}$ CLEO data taken at the peak of $\psi (3770)$ resonance, di…