2021/06/21 by Tian-Wei Wu, Y. Pan, Wu, Tian-Wei +11
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Nuclear physics research studies #Quantum Chromodynamics and Particle Interactions #hep-ex #hep-lat #hep-ph
paper · pdf · doi:10.48550/arxiv.2106.11450
17 pages, 4 figures
arxiv created 2021/06/21 · openalex publication_date 2021/06/21 · arxiv updated 2021/06/23 · openalex created_date 2024/04/11 · openalex updated_date 2026/07/28
Motivated by the recent discovery of the first hidden charm pentaquark state with strangeness Pcs(4459) by the LHCb Collaboration, we study the likely existence of a three-body ΣcDK bound state, which shares the same minimal quark content as Pcs(4459). The ΣcD and DK interactions are determined by reproducing Pc(4312) and Ds0^*(2317) as ΣcD and DK molecules, respectively, while the ΣcK interaction is constrained by chiral effective theory. We indeed find a three-body bound state by solving the Schrödinger equation using the Gaussian Expansion Method, which can be viewed as an excited hidden charm pentaquark state with strangeness, Pcs^*(4739), with I(JP)=1(1/2+) and a binding energy of 77.8+25-10.3 MeV. We further study its strong decays via triangle diagrams and show that its partial decay widths into DΞc' and Ds^*Σc are of a few ten's MeV, with the former being dominant.