We perform a five‐body calculation for pentaquark (q4q̄) state of Λ(1405) as well as the three‐body calculations for the ground state baryons and the Λ(1405), and two‐body calculations for mesons. The hamiltonian, which reproduces reasonably well the energies of ground state baryons (N, Λ, Σ, Ⅺ and ...
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