Manifestly exotic pentaquarks with a single heavy quark

TL;DR

This paper systematically studies the mass spectra and stability of ground pentaquark states with a single heavy quark using the Chromomagnetic Interaction model, suggesting possible narrow or stable exotic states.

Contribution

It provides a detailed analysis of the mass spectra, stability, and decay behaviors of pentaquarks with a heavy quark, offering new predictions for experimental searches.

Findings

Possible existence of narrow or stable pentaquark states.

Detailed mass spectra and decay behavior analysis.

Guidance for experimental searches of exotic pentaquarks.

Abstract

Inspired by the observed $X(2900)$, we study systematically the mass spectra of the ground pentaquark states with the $qqqq\bar{Q}$ ($Q=c,b$; $q=n,s$; $n=u,d$) configuration in the framework of the Chromomagnetic Interaction model. We present a detailed analysis of their stabilities and decay behaviors. Our results indicate that there may exist narrow states or even stable states. We hope that the present study may inspire experimentalist's interest in searching for such a type of the exotic pentaquark state.