# Prediction of $QQqq\bar{s}$ molecular pentaquarks within the extended local hidden gauge approach

## TL;DR

This paper predicts fourteen potential molecular pentaquark states with specific quantum numbers and quark compositions using an extended local hidden gauge approach, highlighting their possible existence and binding energies.

## Contribution

It introduces a novel application of the extended local hidden gauge approach to predict new molecular pentaquark states with specific quantum numbers and quark content.

## Key findings

- Fourteen molecular pentaquark candidates identified.
- Binding energies range from 0.1 to 33 MeV.
- States arise from specific meson-baryon interactions.

## Abstract

We investigate hadronic molecular states with the quark contents $ccqq\bar{s}$, $bbqq\bar{s}$, and $bcqq\bar{s}$ $(q=u,d)$ by employing the extended local hidden gauge approach. Considering that the $S$-wave meson-baryon interactions are dominated by vector meson exchange, the coupled channels scattering amplitudes are obtained by solving the Bethe-Salpeter equation in its on-shell form. We find that the poles appearing on the complex Riemann sheet are potential candidates for dynamically generated molecular pentaquark states. The results suggest the existence of a total of fourteen molecular states with quantum numbers $I(J^{P})=0(1/2^{-})$, $0(3/2^{-})$, and $0(5/2^{-})$, which arise from the interactions of the $K^{(*)}\Xi_{cc}^{(*)}$, $K^{(*)}\Xi_{bb}^{(*)}$, $K^{(*)}\Xi_{bc}^{(*)}$, and $K^{(*)}\Xi_{bc}^{'}$ channels, respectively. Their binding energies are calculated to be about $0.1-33$ MeV, and this range depends on the free parameter of the theory. Our research contributes to the spectroscopic studies of hadronic molecular pentaquark states.