2025/06/30 by Y. Shen, Zhi-Wei Liu, Shen, Yi-bo +7
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.2506.23476
openalex publication_date 2025/06/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
Over the past 20 years, many new hadron states have been discovered, but understanding their nature remains a key experimental and theoretical challenge. Recent studies have established that hadron-hadron interactions primarily govern the generation of new hadronic states, with their spectroscopy serving as a powerful tool for probing these interactions and determining the corresponding compositeness. In this work, we study four scenarios to determine the DK interaction by reproducing the mass of the Ds0^*(2317), i.e., assuming the Ds0^*(2317) as a DK molecule, a mixture of a DK molecule and a bare state, a DK-Dsη molecule, and a mixture of a DK-Dsη molecule and a bare state. Using the D0K+ interactions derived from these scenarios, we predict the D0K+ correlation functions. Our results demonstrate that the lineshape of the D0K+ correlation function is sensitive to the admixture effects from the coupled-channel D+K0 and the bare state. Furthermore, we find that the D0K+ correlation function can probe the position of the bare state, if such a QCD bare state exists. Using the shallow-bound state candidate X(3872) as input, we study the D0D*0 correlation functions. These functions are highly sensitive to short-range dynamics and bare-state admixtures, resulting in clearly distinguishable correlation-function line shapes across different values of compositeness.