2025/04/28 by Qing-Fu Song, Wei Liang, Song, Qing-Fu +4
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Physics of Superconductivity and Magnetism #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.2504.19462
openalex publication_date 2025/04/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In this work, we adopt the one-boson exchange model to analyze the D(*)(s)B(*)(s) interactions from a coupled-channel perspective. For the I(JP)=1(1+) DB*/D^*B/D^*B* system, employing the complex scaling method, we obtain a loosely bound state and two resonant states located below the DB*, D^*B, and D^*B* thresholds, respectively. Assuming that the charmonium-like states T_cc1(3900) and T_cc1(4020), as well as the bottomonium-like states T_bb1(10610) and T_bb1(10650), are molecular states near their respective thresholds, we suggest that the predicted states in the I(JP)=1(1+) D(*)(s)B(*)(s) system could be their bottom-charmed analogues. In addition, we extend our analysis to other D(*)(s)B(*)(s) combinations with various quantum numbers. Our results suggest that some exotic structures may exist in the bottom-charmed sector. Finally, we collect the possible decay channels for future experimental observations. The Bc/Bc^* plus a light meson are the ideal final state to search for the bound states, while the D(s)(*)B(s)(*) channels are suitable for the resonances. We highly recommend that the future experiments hunt for these bottom-charmed exotic particles.