  The first observation and study of two new baryonic structures in the final
state $\Xi_b^0\pi^+\pi^-$ and the confirmation of the $\Xi_b(6100)^-$ state in
the $\Xi_b^-\pi^+\pi^-$ decay mode are reported using proton-proton collision
data collected by the LHCb experiment, corresponding to an integrated
luminosity of 9$\mathrm{fb}^{-1}$. In addition, the properties of the known
$\Xi_b^{*0}$, $\Xi_b^{'-}$ and $\Xi_b^{*-}$ resonances are measured with
improved precision. The new decay mode of the $\Xi_b^0$ baryon to the
$\Xi_c^+\pi^-\pi^+\pi^-$ final state is observed and exploited for the first
time in these measurements.
