Precise measurement of the form factors in $D^0\to K^{\ast }(892{)}^{-}{\ell }^{+}{\nu }_{\ell }$ and observation of $D^0\to K_2^{\ast }(1430{)}^{-}{\ell }^{+}{\nu }_{\ell }$

BESIII Collaboration, M. Ablikim, M. N. Achasov +680

We report a study of the semileptonic decays $D^0\to {\bar{K}}^0{\pi }^{-}{\ell }^{+}{\nu }_{\ell }$ (where $\ell =e,\mu$) based on a sample of $20.3{\mathrm{fb}}^{-1}$ of $e^{+}{e}^{-}$ annihilation…