  We investigate the neutrino elastic differential cross-section (NDCS) and
corresponding mean free path for neutral current scattering in the dense matter
of a neutron star. A wide range of observed neutron star (NS) masses is
considered, including the presence of $\Lambda$, $\Xi^{-}$, and $\Xi^{0}$
hyperons in the heaviest stars. Their presence significantly decreases the
total neutrino mean free path in the heavier stars.
