  In the framework of quark delocalization color screening model, the three new
reported pentaquarks $P_{c}(4312)$, $P_{c}(4440)$, and $P_{c}(4457)$ can be
identified as the hidden-charm molecular states $\Sigma_{c}D$ with
$J^{P}=\frac{1}{2}^{-}$, $\Sigma_{c}D^{*}$ with $J^{P}=\frac{3}{2}^{-}$, and
$\Sigma_{c}D^{*}$ with $J^{P}=\frac{1}{2}^{-}$, in the baryon-meson scattering
process, respectively. Besides, the $\Sigma^{*}_{c}D^{*}$ of both
$J^{P}=\frac{1}{2}^{-}$ and $J^{P}=\frac{3}{2}^{-}$ are also possible molecular
pentaquarks. Moreover, the calculation is extended to the $P_{c}-$like
molecular pentaquarks $P_{b}$. Several states with masses above $11$ GeV and
narrow width are obtained. All these heavy pentaquarks are worth searching in
the future experiments.
