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We investigate the possible existence of triple-strangeness hidden-charm pentaquark states in the off-shell coupled-channel formalism. The open-charm meson-baryon D ¯ s Ω c , D ¯ s Ω c * , D ¯ s * Ω c , and D ¯ s * Ω c * channels are considered, together with the hidden-charm J / ψ Ω channel. The two-body kernel Feynman amplitudes are constructed from an effective Lagrangian based on hidden local symmetry and heavy-quark spin symmetry. The coupled Blankenbecler-Sugar equation is solved in the partial-wave helicity basis. We observe two triple-strangeness hidden-charm pentaquark states: P c c ¯ s s s ( 4787 ) and P c c ¯ s s s ( 4841 ) , both with J P = 1 / 2 − . The P c c ¯ s s s ( 4787 ) couples dominantly to the D ¯ s * Ω c and D ¯ s * Ω c * channels, while the P c c ¯ s s s ( 4841 ) couples almost exclusively to the D ¯ s * Ω c * channel. The total transition cross sections of D ¯ s ( *
Clymton et al. (Fri,) studied this question.