Interaction of strange particles with nucleons

The interaction of the strange particles (Lambda, K (+)) with nucleons is i nvestigated. A comparison of calculated (within CBUU model) and measured K (+) spectra in proton-nucleus reactions is made and shows good agreement. E xperimentally determined production cross sections of heavy Lambda hypernuc lei in collisions of protons with Bi and U targets, obtained at COSY-Julich , are compared with calculated values and agreement is obtained if rescatte ring of the Lambda particles on nucleons is taken into account. The lifetim es of heavy Lambda hypernuclei produced on Bi and U targets were measured. The value obtained for Bi (161+/-7+/-14)ps (the most precise value in liter ature) and the new value of the lifetime obtained for U (152+/-10+/-25)ps a re consistent with possibility of the violation of DeltaI = 1/2 rule for no nmesonic Lambda decay.