The new $P_{\rm cs}(4459)$, $Z_{\rm cs}(3985)$, $Z_{\rm cs}(4000)$ and $Z_{\rm cs}(4220)$ and the possible emergence of flavor pentaquark octets and tetraquark nonets

TL;DR

This paper predicts new hidden-charm states and discusses the potential formation of flavor pentaquark octets and tetraquark nonets, aligning with recent experimental discoveries and aiding in theoretical interpretation.

Contribution

It extends previous hadro-charmonium and tetraquark models to new states and explores the emergence of flavor multiplets in the hidden-charm sector.

Findings

Model predictions match experimental data for $Z_{cs}$ states.

Extended predictions for $P_{cs}$ and other tetraquarks.

Discussion of flavor multiplet structures in hidden-charm sector.

Abstract

Our hadro-charmonium and compact tetraquark model predictions, published before the BESIII and LHCb experimental data for the $Z_{\rm cs}(3985)$ and $Z_{\rm cs}(4003)$ tetraquarks were released, match surprisingly well with them. Here, we extend our results for the $P_{\rm cs}$ states to $\Lambda$ + charmonium configurations and also our hadro-charmonium predictions for $Z_{\rm c}$ and $X_{\rm c}$ tetraquarks to charmonium + pion/eta. We use them, in combination with our previous findings, to discuss the possible emergence of SU(3)$_{\rm f}$ pentaquark octets and tetraquark nonets in the hidden-charm sector as a tool to discriminate among different theoretical interpretations.