Molecular state $Σ_b Σ_b^*$ in the coupled-channel formalism

In the framework of the dispersion relation technique the relativistic six-quark equations for the molecule $Σ_b Σ_b^*$ are found. The relativistic six-quark amplitudes of the hexaquark including the quarks of three flavors ($u$, $d$, $b$) are calculated. The pole of these amplitudes determines the mass of $Σ_b Σ_b^*$ state $M=11620\, MeV$. The binding energy is equal to $27\, MeV$.

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