Speaker
Chu-Wen Xiao
(Central South University)
Description
The LHCb collaboration has reported recently the charm-strange pentaquark states found in the $J/\psi \Lambda$ mass distribution, called as the $P_{cs}(4459)$ state. Based on the constraints of the heavy quark spin symmetry combined with the local hidden gauge symmetry, we investigate the $\bar{D}^{(∗)} \Xi_c^{(∗,\prime)}$ interactions, together with $J/\psi \Lambda$ and other coupled channels, using a coupled channel approach. With this approach, before the experimental findings, we had made some predictions for them. Using the experimental results, one can determine the free parameters, $a_{\mu}$ in the loop functions. From the poles found in the second Riemann sheets, we dynamically reproduce the $P_{cs}(4459)$ state in the coupled channel interactions, which may be a degenerate state, analogous to the one of $P_c(4450)$ before. Furthermore, our results also made some more predictions for further experimental studies.
| Presentation type | Oral |
|---|
Primary author
Chu-Wen Xiao
(Central South University)
Co-authors
Prof.
Bingsong ZOU
(ITP, CAS)
Prof.
Eulogio Oset
(IFIC, University of Valencia)
Dr
Jia-Jun Wu
(IHEP)
Dr
Juan Nieves
(IFIC (CSIC-UV))
