  We compute the decays ${B\to D^\ast_0}$ and ${B\to D^\ast_2}$ with finite
masses for the $b$ and $c$ quarks. We first discuss the spectral properties of
both the $B$ meson as a function of its momentum and of the $D^\ast_0$ and
$D^\ast_2$ at rest. We compute the theoretical formulae leading to the decay
amplitudes from the three-point and two-point correlators. We then compute the
amplitudes at zero recoil of ${B\to D^\ast_0}$ which turns out not to be
vanishing contrary to what happens in the heavy quark limit. This opens a
possibility to get a better agreement with experiment. To improve the continuum
limit we have added a set of data with smaller lattice spacing. The ${B\to
D^\ast_2}$ vanishes at zero recoil and we show a convincing signal but only
slightly more than 1 sigma from 0. In order to reach quantitatively significant
results, we plan to fully exploit smaller lattice spacings as well as another
lattice regularization.
