"Subthreshold" production of antiprotons and kaons inp-nucleus collisions

We show that the high momentum scaling function for nucleons in nuclei, $G\mathrm{}\left(k\right)=\exp (-\frac{k}{k_0})$, determined from the study of the production of protons in $p$-nucleus collisions in kinematic regions forbidden in free $p-p$ interactions, also accounts for the production of antiprotons in $p$-nucleus collisions at energies below the free proton threshold. A simple scaling method as well as detailed Monte Carlo calculations are employed and estimates of $K$ production at "subthreshold" energies are given.