[en] The cross section for ³He production in antiproton interaction with ⁴He has been measured at the LEAR accelerator of CERN at antiproton energies of 20, 50 and 180 MeV. An analysis of the obtained experimental results permits to impose the following restriction on the amount of antimatter in the eraly Universe (10³ < t <= 10¹³ s) R=nsub(anti p)/nsub(p) <= (0.7-1.1)x10^-3

[en] The differential and total cross sections of the π⁴He-scattering are calculated on the basis of the Glauber approach with the use of nonrelativistic and relativistic kinematics. The calculated cross sections are compared with experimental data on the elastic scattering obtained at energies of 68, 97 and 154 MeV

[en] In the review methods of phase analysis and the problems connected with the existence of resonance and determination of its parameters are discussed. Classical and contemporary methods of phase analysis are considered. Main attention is given to the ambiguity problem arising at scattering amplitude determination by the phase analysis method. Criteria of resonance existence with account of background effect on resonance behaviour of partial scattering amplitude are investigated in more detail. The phase analysis of pion scattering on nuclei (πA-scattering) at intermediate energies is carried out. Data on existence of new types of excited states in the πA systems are presented

No abstract available

[en] The results of the new measurements of the reaction p-bar + d → π^- + p the antiproton annihilation at rest are presented. A total of 77 events of this reaction have been found in different trigger configurations. The branching ratio of the reaction is W(p-bar + d → π^- + p)=(1.20 ±0.14)x10^-5. The first indication fo the observation of another Pontecorvo reaction p-bar + d → π^- + p was obtained. 17 refs.; 11 figs.; 2 tabs

[en] Results of the energy-dependent phase-shift analysis of the elastic π⁴He scattering in the energy range Tsub(π)=0-300 MeV are discussed. A decrease in the contribution from the elastic scattering to the total π⁴He scattering cross section has been detected in the low-energy region (Tsub(π) < 50 MeV), the S-wave partial inelastic cross section is suppressed in the energy region Tsub(π) approximately 50-80 MeV. The results are compared with the calculations within the optical model and the dispersion relations

[en] The results are discussed of an energy dependent phase analysis of elastic π₄He scattering for energies Tsub(π)=0-300 MeV. A decrease of the contribution of elastic scattering to the total π₄He scattering cross section has been found at low energies (Tsub(π) < 50 MeV), while the partial inelastic cross section in the S-wave turns out to be suppressed at energies within the energy region Tsub(π) approximately 50-80 MeV. Comparison is made with results from optical model calculations and dispersion relations

No abstract available

[en] The NK-bar-scattering S matrix is suggested to have the P₀₁-channel pole which corresponds to Λ-hyperon. The Λ-hyperon magnetic moment is calculated. Its value ''arises'' only due to nucleon magnetic moments and N and K-bar nontrivial relativistic coupling in the P₀₁-channel. This is one more method to the quark model methods. The calculations are in agreement with the experimental value of μΛ

[en] The possible existence of a new stable baryon R(J=1/2, I=3/2, 1025 MeV) and its connection with the narrow low-mass dibaryons are discussed. Proposed is an experiment which can put in evidence the existence of an exotic baryon, R, as well as decide the isospin assignment for low-mass dibaryons (test for I=2 assignment)