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The results of the SERP-E-184 experiment at the U-70 accelerator (IHEP,Protvino) are presented. Interactions of the 70 GeV proton beam with C, Si andPb targets were studied to detect decays of charmed $D^0$, $\overline D^0$,$D^+$, $D^-$ mesons and $\Lambda _c^+$ baryon near their production threshold.Measurements of lifetimes and masses are shown a good agreement with PDG data.The inclusive cross sections of charm production and their A-dependencies wereobtained. The yields of these particles are compared with the theoreticalpredictions and the data of other experiments. The measured cross section ofthe total open charm production ($\sigma _{\mathrm {tot}}(c\overline c)$ = 7.1$\pm $ 2.3(stat) $\pm $1.4(syst) $\mu $b/nucleon) at the collision c.m. energy$\sqrt {s}$ = 11.8 GeV is well above the QCD model predictions. Thecontributions of different species of charmed particles to the total crosssection of the open charm production in proton-nucleus interactions vary withenergy.

Charm production nearby threshold in pA-interactions at 70 GeV