2025/03/02 by Bing Wu, Xiang-Kun Dong, Wu, Bing +7
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.2503.00702
openalex publication_date 2025/03/02 · openalex created_date 2025/10/12 · openalex updated_date 2026/07/28
The low-energy J/ψN scattering is of significant importance for various reasons. It is deeply interconnected with the hidden-charm Pc pentaquark states, provides insights into the role of gluons in nucleon structures, and is pertinent to the properties of J/ψ in nuclear medium. The scattering can occur through two distinct mechanisms: the coupled-channel mechanism involving open-charm meson-baryon intermediate states Λc D(*) and Σc(*) D(*), and the soft-gluon exchange mechanism. In this study, we investigate the S-wave J/ψN scattering length arising from both mechanisms. Our findings indicate that both mechanisms lead to attractive interactions, yielding scattering lengths of [-10, -0.1] × 10-3 fm for the coupled-channel mechanism and <-0.16 fm for the soft-gluon exchange mechanism, respectively. Notably, the soft-gluon exchange mechanism produces a scattering length that is at least one order of magnitude larger than that from the coupled-channel mechanism, indicating its predominance. These findings can be corroborated through lattice calculations and will enhance our understanding of scattering processes that violate the Okubo-Zweig-Iizuka rule.