Abstract
We analyzed theK + production at projectile energies below the free nucleon-nucleon threshold in proton-nucleus collisions and studied the contribution from different reaction channels to this process. It was shown that the secondary pion-nucleon (π+N→Λ+K +) channel significantly prevails over the direct (p+N→Λ+N+K +) one. The momentum and angularK + spectra were calculated in the framework of different production channels in order to propose experimental measurements which allow to distinguish the mechanisms discussed. We also studiedK + d correlations and considered the deuteron reabsorption in the nuclear medium as well as the fast deuteron background. The features ofK + p correlations related to the different production channels were analyzed as well.
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