Is Pcs(4459) one state or two?
DOI:
https://doi.org/10.31349/SuplRevMexFis.3.0308045Keywords:
Pentaquark state, heavy quark spin symmetry, coupled channelAbstract
The LHCb collaboration reported recently a charm-strange pentaquark state Pcs(4459) found in the J/ψΛ invariant mass distribution. Using a coupled channel unitary approach combined with the local hidden gauge formalism, we investigate the D¯(∗)Ξ (∗,0) c interactions, together with the J/ψΛ and other coupled channels, with the constraints of the heavy quark spin symmetry. We dynamically reproduce the Pcs(4459) state in the coupled channel interactions, which is a degenerate state of D¯ ∗Ξc and analogous to the Pc(4450) state before. Furthermore, we make more predictions for future experiments.
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