2019/09/19 by Y. Huang, Yin Huang, Ming-Zhu Liu +7 · 27 citations
Physics and Astronomy · #Algorithm #Bound state #Computer science #Hadron #High-Energy Particle Collisions Research #Isospin #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #State (computer science) #hep-ex #hep-lat #hep-ph
paper · pdf · doi:10.1103/physrevd.101.014022
published in Physical review. D/Physical review. D. 101(1) (American Physical Society) · 6 pages, 4 figures
arxiv created 2019/09/19 · openalex publication_date 2020/01/28 · arxiv updated 2020/02/05 · openalex created_date 2020/02/07 · openalex updated_date 2026/08/05
Nowadays, it is generally accepted that the DK interaction in isospin zero is strongly attractive, and the Ds0*(2317) can be described as a DK molecular state. Recent studies have shown that the three-body DDK system binds as well with a binding energy about 60--70 MeV. The DDK bound state has an isospin of 1/2 and a spin-parity of 0^\ensuremath-. If discovered either experimentally or in lattice QCD, it will not only provide further support for the molecular nature of the Ds0*(2317), but also provide a way to understand other exotic hadrons expected to be of a molecular nature. In the present work, we study its two-body strong decay widths via triangle diagrams. We find that the partial decay width into DDs\ensuremathπ is at the order of 2--3 MeV, which seems to be within the reach of the current experiments such as Belle II. As a result, we strongly recommend that this decay channel of the DDK bound state is searched for experimentally.