Speaker
Description
The LHCb collaboration's discovery of pentaquarks has revitalized interest in heavy exotic baryon spectroscopy, motivating extensive searches for new states. In this work, we investigate hidden-charm pentaquark states in heavy meson and singly heavy baryon systems by employing an off-shell coupled-channel formalism. The interaction kernel is constructed from meson exchange diagrams using an effective Lagrangian that respects both heavy quark spin symmetry and hidden local symmetry. In this talk, I will present our study of the production mechanisms of hidden-charm pentaquark states ranging from $S=0$ to $S=-3$ in strangeness. Several key findings will be discussed: the suppression of $P_{c\bar{c}}$ signals in $J/\psi$ photoproduction; the two-pole structure of $P_{c\bar{c}s}(4459)$; predictions of $I=3/2$ $P_{c\bar{c}}$ and $I=1$ $P_{c\bar{c}s}$ states; and predictions of eight $P_{c\bar{c}ss}$ and two $P_{c\bar{c}sss}$ states. These findings provide insights into the production dynamics and properties of pentaquark states while offering predictions that can guide future experimental observations.
