Exclusive decays $B\to {\ell }^{-}\bar{\nu }$ and $B\to D^{(\ast )}{\ell }^{-}\bar{\nu }$ in the covariant quark model

Mikhail A. Ivanov, Jürgen G. Körner, Chien-Thang Tran

We study the exclusive leptonic and semileptonic $B$ decays $B\to {\ell }^{-}\bar{\nu }$ and $B\to D^{(\ast )}{\ell }^{-}\bar{\nu }$ in the framework of the covariant quark model with built-in infr…