Semileptonic $D_{e4}$ decays: hadronic dynamics and the determination of $|V_{cs}|$

J. L. Gutiérrez Santiago, G. López Castro

The four-body decays $D^{+}\to K^{-}{\pi }^{+}{e}^{+}{\nu }_e$ ($D_{e4}^{+}$) and $D^0\to \overline{K^0}{\pi }^{-}{e}^{+}{\nu }_e$ ($D_{e4}^0$) are studied in a model where the momentum-dependence of the hadronic matr…