@Article{Du_etal2021,
author="Du, M. L.
and Guo, Z. H.
and Oller, J. A.",
title="Insights into the nature of the P-cs(4459)",
journal="Physical Review D",
year="2021",
publisher="Amer Physical Soc",
volume="104",
number="11",
pages="114034--14pp",
abstract="We study the nature of the recently observed Pcs(4459) by the LHCb collaboration by employing three methods based on the elastic effective-range expansion and the resulting size of the effective-range, the saturation of the compositeness relation and width of the resonance, and a direct fit to data involving the channels J/psi Lambda, Xi {\textquoteright} c over line D, and Xi c over line D*. We have also considered the addition of a Castillejo-Dalitz-Dyson (CDD) pole but this scenario can be discarded. Our different analyses clearly indicate the molecular nature of the Pcs(4459) with a clear Xi c over line D* dominant component. In relation with heavy-quark-spin symmetry our results also favor the actual existence of two resonances with J=1/2 (the lighter one) and 3/2 (the heavier one) in the energy region of the Pcs(4459). In the scenario of two-resonance for the Pcs(4459), the inclusion of the Xi {\textquoteright} c over line D channel is required for their mass splitting and it allows one to determine the spin structures of the two resonances.",
optnote="WOS:000754325600003",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=5118), last updated on Mon, 21 Feb 2022 13:33:34 +0000",
issn="2470-0010",
doi="10.1103/PhysRevD.104.114034",
opturl="https://arxiv.org/abs/2109.14237",
opturl="https://doi.org/10.1103/PhysRevD.104.114034",
language="English"
}