Dalitz decays $D_{sJ}^{(\ast )}\to D_s^{(\ast )}{\ell }^{+}{\ell }^{-}$

Pietro Colangelo, Fulvia De Fazio, Francesco Loparco +1

The Dalitz decays of the positive parity $D_{sJ}^{(\ast )}$ charmed mesons, $D_{sJ}^{(\ast )}\to D_s^{(\ast )}{\ell }^{+}{\ell }^{-}$ with $J=0,1,2$ and $\ell =e,\mu$, are important processes to invest…