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Strange particles and hyperfragments in collisions of antiprotons and protonson nuclei have been investigated systematically within a microscopic transportmodel. The hyperons are produced from the annihilation in antibaryon-baryoncollisions and strangeness exchange process in antiproton induced reactions. Acoalescence approach is used for constructing the primary hyperfragments inphase space and the statistical model is modified for describing the decay ofhyperfragments via evaporating hyperon, neutron, charged particles etc, inwhich the shell effect, binding energy and root-mean-square radii are takeninto account. It is found that the influence of the hyperon-nucleon interactionon the free $\Lambda$ and $\Xi^{-}$ production is negligible. However, thelarge hyperfragment yields are obvious with the attractive potential. Theproduction of double strangeness hyperfragments are reduced below 1$\mu b$ incomparison to the yields of $\Lambda$-hyperfragments with the cross sections of0.05-0.1 mb in the antiproton induced reactions on $^{63}$Cu at the incidentmomenta of 1-5 GeV/c. The light hyperfragments are formed in the dynamicalfragmentation process. The energy dependence of hyperfragment formation is weakonce the incident energy above the threshold energy for the hyperon production.

Strangeness production and hypernuclear formation in proton and antiproton induced reactions