期刊
PHYSICAL REVIEW D
卷 101, 期 1, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.101.014022
关键词
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资金
- National Natural Science Foundation of China (NSFC) [11975041, 11735003]
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) [310759/2016-1, 311524/2016-8]
Nowadays, it is generally accepted that the DK interaction in isospin zero is strongly attractive, and the D-s0*(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(-). If discovered either experimentally or in lattice QCD, it will not only provide further support for the molecular nature of the D-s0* (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 pi 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.
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