Strong decays of the newly $$P_{cs}(4459)$$ as a strange hidden-charm $$\Xi _c{\bar{D}}^*$$ molecule

Abstract

AbstractIn our former work [arXiv:2011.07214], the $$P_{cs}(4459)$$ P cs ( 4459 ) observed by the LHCb Collaboration can be explained as a coupled strange hidden-charm $$\Xi _c{\bar{D}}^*/\Xi _c^*{\bar{D}}/\Xi _c'{\bar{D}}^*/\Xi _c^*{\bar{D}}^*$$ Ξ c D ¯ ∗ / Ξ c ∗ D ¯ / Ξ c ′ D ¯ ∗ / Ξ c ∗ D ¯ ∗ molecule with $$I(J^P)=0(3/2^-)$$ I ( J P ) = 0 ( 3 / 2 - ) . Here, we further discuss the two-body strong decay behaviors of the $$P_{cs}(4459)$$ P cs ( 4459 ) in the meson-baryon molecular scenario by input the former obtained bound solutions. Our results support the $$P_{cs}(4459)$$ P cs ( 4459 ) as the strange hidden-charm $$\Xi _c{\bar{D}}^*$$ Ξ c D ¯ ∗ molecule with $$I(J^P)=0(3/2^-)$$ I ( J P ) = 0 ( 3 / 2 - ) . The relative decay ratio between $$\Lambda _cD_s^*$$ Λ c D s ∗ and $$J/\psi \Lambda $$ J / ψ Λ is around 10, where the partial decay width for the $$\Lambda _cD_s^*$$ Λ c D s ∗ channel is around 0.6 to 2.0 MeV.