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

Abstract

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 $pp\to {\Sigma }^{-}X$ and $\gamma p\to \Lambda X$ collisions, and also a remarkable correction induced by the diquark form factor in ${\Sigma }^{-}p\to \Lambda X$ collision.

4 pages, 4 figures, talk presented at 16th International Spin Physics Symposium (SPIN2004)