Precision measurements of semleptonic decays $D^0\to \ddot{I}{€}^{-}{\ell }^{+}\hat{I}{½}_{\ell }$ and $D^{+}\to \ddot{I}{€}^0{\ell }^{+}\hat{I}{½}_{\ell }$ ($\ell =e,\hat{I}¼$)

BESIII Collaboration, M. Ablikim, M. N. Achasov +773

The branching fractions of $D^0\to \ddot{I}{€}^{-}{e}^{+}\hat{I}{½}_e$, $D^0\to \ddot{I}{€}^{-}\hat{I}{¼}^{+}\hat{I}{½}_{\hat{I}}¼$, $D^{+}\to \ddot{I}{€}^0{e}^{+}\hat{I}{½}_e$, and $D^{+}\to \ddot{I}{€}^0\hat{I}{¼}^{+}\hat{I}{½}_{\hat{I}}¼$ are measured to be $(2.950\pm0.017_{\rm stat.}\pm 0.017_{\…