B>0 annihilation

We analysed the experimental data on strange particle production in antiproton nucleus annihilations. Following the standard conventional annihilation picture we account for the dominant reaction channels in order to calculate the cross sections observed. The experimental data on single strangeness production are reproduced by the calculations and account for the annihilation on a single nucleon followed by subsequent rescattering proceeding in the hadron phase. The contribution of the discussed process underestimates the experimental results on double strangeness production by an order of magnitude. One of the possible explanation for this discrepancy may be related with the B>0 annihilation. (author). 19 refs, 5 tabs