# Pentaquarks with anticharm or beauty revisited

## TL;DR

This paper investigates the stability of pentaquark states containing a heavy antiquark and four light quarks using a constituent model, concluding that no bound states are found due to chromoelectric and chromomagnetic effects.

## Contribution

It provides a detailed analysis of pentaquark stability with heavy antiquarks, showing the absence of bound states within this model.

## Key findings

- No bound pentaquark states below dissociation threshold
- Chromoelectric and chromomagnetic effects are not favorable for stability
- Heavy antiquark pentaquarks are unlikely to form bound states

## Abstract

We use a constituent model to analyze the stability of pentaquark $\bar Q qqqq$ configurations with a heavy antiquark $\bar c$ or $\bar b$, and four light quarks $uuds$, $ddsu$ or $ssud$. The interplay between chromoelectric and chromomagnetic effects is not favorable, and, as a consequence, no bound state is found below the lowest dissociation threshold.