Measurement of the Dynamics of the Decays $D_s^{+}\to {\eta }^{(\prime )}{e}^{+}{\nu }_e$

M. Ablikim, M. N. Achasov, S. Ahmed +458

Using $e^{+}{e}^{-}$ annihilation data corresponding to an integrated luminosity of 3.19\,fb${}^{-1}$ collected at a center-of-mass energy of 4.178~GeV with the BESIII detector, we measure…