Investigation reveals ten bound states in hidden-charm systems, highlighting short-range dynamics and pentaquark properties.
We investigate hidden-charm molecular states in Ξc(,*)D̄(*) systems using the one-boson exchange model. By regulating the short-range interactions with parameter a and cutoff $Λ$, we found ten bound states in isoscalar systems. Our analysis reveals that if the LHCb's Pcs(4459) and Belle's Pcs(4472) pentaqurks are indeed distinct states, their mass splitting can be resolved through Ξc^D̄-ΞcD̄^* coupled-channel dynamics using consistent model parameters. This framework assigns 3/2⁻ and 1/2⁻ spin-parity quantum numbers to Pcs(4459) and Pcs(4472), respectively. With this consistent model parameter, we predict several new molecular candidates in the 4.3-4.7 GeV mass region, demonstrating the crucial interplay between coupled-channel effects and short-range dynamics in understanding hidden-charm pentaquarks as hadronic molecules.
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Wang et al. (2025) studied this question.
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