UNITARY SYMMETRY IN BARYON-ANTIBARYON SYSTEMS

In this paper, we assume that proton, neutron and Λ hyperon are basic particles which belong to the fundamental triplet of the group SU3. Besides, the "original" mass difference between Λ hyperon and nucleon exhibits the violation of unitary symmetry which carases the splitting of the energy level and leads to formation of the "unitary symmetrical energy band." The analysis of the energy levels of B-(?) systems in this paper shows the existence of the energy band. Furthermore, we find that the theoretical values obtained are well consistent with the experimental ones.