  The large data sample being recorded with the Belle detector at the
$\Upsilon$(5S) energy provides a unique opportunity to study the
less-well-known $B_s^{0}$ meson decays. Following our recent measurement of
$B_s^{0}\to D_s^{-}\pi^{+}$ in a sample of 23.6 fb$^{-1}$, we extend the
analysis to include decays with photons in the final state. Using the same
sample, we report the first observation of three other dominant exclusive
$B_s^{0}$ decays, in the modes $B_s^{0}\to D_s^{*-}\pi^+$, $B_s^{0}\to
D_s^{-}\rho^+$ and $B_s^{0}\to D_s^{*-}\rho^+$. We measure their respective
branching fractions and, using helicity-angle distributions, the longitudinal
polarization fraction of the $B_s^{0}\to D_s^{*-}\rho^+$ decay.
  We also present a measurement of the branching fractions for the decays
$B_s^{0} \to D_s^{(*)+}D_s^{(*)-}$. In the heavy quark limit, this branching
fraction is directly related to the width difference between the $B_s$ CP-even
and CP-odd eigenstates.

High Energy Physics - Experiment