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We discuss the relation between the polarization of inclusively produced(anti)-hyperons and the incident baryon states in the framework of theconstituent quark-diquark cascade model. We assume that there is an intrinsicdiquark-antidiquark state in the incident baryon, in which the intrinsicdiquark immediately fragments into a non-leading baryon and the antidiquarkbehaves as a valence constituent. It is also assumed that the valence(anti)diquark in the incident nucleon tends to combine selectively with aspin-down sea quark and, on the othe hand, the spin-up valence quark in theprojectile is chosen by a sea (anti)diquadk in preference to the spin-downvalence quark. It is found that the incident spin-1/2 baryon is mainly composedof a spin-0 valence diquark and a valence quark, and contains an intrinsicdiquark-antidiquark state with a probability of about 7%.

Anti-hyperon Polarization in $pA$ and $\Sigma^-A$ Collisions and Intrinsic Antidiquark State in Incident Baryon