Coupled-Channel Analysis of $\chi_{cJ}(2P)$ States and Hadronic Molecules
Abstract
The internal structure of charmonium-like states near hadronic thresholds remains an important subject in hadron spectroscopy. In particular, the coupling between conventional charmonium states and hadronic molecular channels may play a significant role in understanding their properties.
In this study, we investigate the $X(3860)$, $X(3872)$, and $Z(3930)$ within a coupled-channel framework incorporating the $\chi_{cJ}(2P)$ charmonium states and hadronic molecular channels. The interactions between charmed mesons are described by one-boson-exchange potentials derived from effective Lagrangians respecting chiral symmetry, heavy-quark symmetry, and hidden local symmetry. By including the coupling between the charmonium and hadronic molecular channels, we describe these three states within a unified framework and investigate their mass spectra and internal structures.
In this study, we investigate the $X(3860)$, $X(3872)$, and $Z(3930)$ within a coupled-channel framework incorporating the $\chi_{cJ}(2P)$ charmonium states and hadronic molecular channels. The interactions between charmed mesons are described by one-boson-exchange potentials derived from effective Lagrangians respecting chiral symmetry, heavy-quark symmetry, and hidden local symmetry. By including the coupling between the charmonium and hadronic molecular channels, we describe these three states within a unified framework and investigate their mass spectra and internal structures.
Date
Nov 24, 2026 — Nov 27, 2026
Event
Location
Nagoya University