Probing $D_s^{\ast }$-meson longitudinal twist-2 LCDA

Si-Hai Zhang, Tao Zhong, Hai-Bing Fu +2

In this paper, we carry on an investigation of the semileptonic decays $B_s\to D_s^{\ast }\ell \bar{\hat{I}}{½}_{\ell }$. Firstly, we derive the moments of the $D_s^{\ast }$-meson longitudinal leading-tw…