Observation of $D^{+}\to f_0(500)e^{+}{\nu }_e$ and Improved Measurements of $D\to \rho e^{+}{\nu }_e$

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

Using a data sample corresponding to an integrated luminosity of 2.93~fb${}^{-1}$ recorded by the BESIII detector at a center-of-mass energy of $3.773$ GeV, we present an analysis of…