  An important observable to understand the properties of the matter produced
in heavy-ion collisions is its strangeness content. Recent experimental results
show that in semi-central collisions, the $\Lambda$ and $\bar{\Lambda}$ global
polarization show differences that increase at low energies. This behaviour has
been described using a model where these particles may be produced from two
distinct density zones in the collision region: the core and the corona where
QGP processes and p + p like reactions, respectively, are mainly at work. Using
this idea, the polarization can be influenced by the relative abundance of
these particles coming from either regions. In this work we show how to test
this model in the MPD experiment.
