Fig. 1. (color online) Temporal evolution of mesons, hyperons, primordial antiprotons and antiprotons produced in the annihilation channels in central ²⁸Si+²⁸Si collisions at the incident energy of 3 GeV/nucleon.

Fig. 2. Mass dependence of K⁺, K^-, primordial antiprotons and annihilation antiprotons at the incident energy of 2 GeV/nucleon.

Fig. 3. (color online) Rapidity and transverse momentum spectra of primordial antiprotons and annihilation antiprotons in central ⁴⁰Ca+⁴⁰Ca collisions at the energy of 3 GeV/nucleon.

Fig. 4. Invariant spectra of antiprotons produced in collisions of ²⁸Si+²⁸Si and ⁵⁸Ni+⁵⁸Ni at the respective incident energies of 2 GeV/nucleon and 1.85 GeV/nucleon compared with the available experimental data [39, 40].

Fig. 5. (color online) Rapidity distribution of directed flows of , K⁺, K⁻ and antiprotons produced in ⁵⁸Ni+⁵⁸Ni at the incident energy of 3 GeV/nucleon.