Most of the baryons produced from unpolarized p‐Nucleus collisions are polarized. The most studied baryon is &Lgr;0from p‐Nucleus in both inclusive and exclusive reactions; &Lgr;0polarization is described byP(Xf,Pt) =aXfPt; where a is independent of the beam energy but dependent on the target. The above equation fits very well, within statistical errors, &Lgr;¯0polarization produced in inclusive reactions. The polarization of &Lgr;¯0from inclusivep¯preactions is consistent with &Lgr;0polarization from inclusiveppreactions. The parameterais independent of the beam energy but depends on the nature of the target or beam: forp¯preactions,a= 0.280 ± 0.0280,&khgr;2dof = 1.281; forK+preactionsa= 1.142±0.231,&khgr;2dof = 0.931; forpBereactions,a= 0.027 ± 0.035,&khgr;2dof = 0.502; for &Sgr;−(C+Cu) reactions,a= 0.069 ± 0.110,&khgr;2dof = 0.464. © 2003 American Institute of Physics