2022/08/23 by Wei Hao, Y. Lu, Hao, Wei +3 · 1 citation
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.2208.10915
openalex publication_date 2022/08/23 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We make a systematic calculation of the spectra and hadronic decays of the Ds system in a coupled channel framework, where the unquenched effects are induced by the 3P0 model. In the calculation, the wave functions are obtained by using a nonrelativistic potential model and are handled precisely with Gaussian Expansion Method. Even though the fitting mainly focuses on the spectrum, our model agrees well with the experiments on both the spectra and the hadronic decays, suggesting that the coupled channel effect could result in a reasonable and coherent description of the Ds mesons. Based on the calculation, we give a detailed analysis on various aspects of the excited states, especially Ds(2317), Ds(2460), Ds(2536), Ds(2860), Ds(3040). We also predict that Ds(23P0) should be a D^*K^* dominant molecule with mass 2894~MeV, which is only 5~MeV below the D^*K^* threshold.