Left-right asymmetry and polarization for inclusive hyperon production   processes
  It is shown that the polarization in inclusive hyperon production and the left-right asymmetries in meson and hyperon production are closely related to one other. They can be understood in terms of a picture in which the orbital motion of valence quarks of the scattering hadrons play an important role. 
C. Boros, Liang Zuo-tang and Meng Ta-chung