# Some decay properties of hidden-charm pentaquarks as baryon-meson molecules

## TL;DR

This paper discusses decay properties of hidden-charm pentaquarks modeled as baryon-meson molecules, predicting specific decay rate ratios based on heavy quark spin symmetry to test their molecular nature.

## Contribution

It provides theoretical decay rate relations for hidden-charm pentaquarks as baryon-meson molecules, offering experimental tests for their molecular structure.

## Key findings

- Predicted decay rate ratios for P_c states to J/ψ p and η_c p
- Predicted decay rate ratios for P_c states to Λ_c D and Λ_c D*
- Proposed experimental tests to verify molecular interpretation

## Abstract

It is pointed out that the previously suggested interpretation of the hidden-charm pentaquarks $P_c(4312)$, $P_c(4440)$ and $P_c(4457)$ as molecular bound states of $\Sigma_c \bar D$ and $\Sigma_c \bar D^*$ baryon-meson pairs gives rise to specific relations for their decays. In particular, the heavy quark spin symmetry predicts ratios of rates of decays of each of the molecules to $J/\psi p$ and to $\eta_c p$ as well as of the decays to $\Lambda_c \bar D$ and to $\Lambda_c \bar D^*$. Experimental studies of these relations would thus provide an indicative probe of the molecular structure.