Spin Polarization of Hyperons in the Hadron-Hadron Inclusive Collisions - Mechanisms and Dynamics -

We discuss interplay of the scalar and vector diquarks which decide the characteristics of the spin polarization as functions of $p_T$ and $x_F$ in the wide kinematical range. We demonstrate a significant effect of quark masses on the pair-creation probabilities from vacuum in $pp\to {\mathrm{\Sigma }}^{-}X$ and $\gamma p \to \Lambda X$ collisions, and also a remarkable correction induced by the diquark form factor in ${\mathrm{\Sigma }}^{-}p\to \mathrm{\Lambda }X$ collision.