Hidden strange pentaquark in constituent quark models

TL;DR

This paper explores the potential existence of a hidden strange pentaquark state in the Nϕ system using a chiral quark model, highlighting the role of meson exchange and channel coupling in binding.

Contribution

It demonstrates that the Nϕ state can form a bound pentaquark through meson exchange and channel coupling effects within the chiral quark model.

Findings

Nϕ state can be bound via σ meson exchange

Channel coupling influences the bound state formation

The study supports the existence of a hidden strange pentaquark

Abstract

In the framework of the chiral quark model, we investigate the hidden strange pentaquark system of the $N\phi$ state with the quantum numbers of IJ=$\frac{1}{2}$$\frac{3}{2}$. The results show that the $N\phi$ state can be bound through the interaction of the $\sigma$ meson exchange plus the effect of the channel coupling, which means that the effect of the channel coupling has an influence on the existence of this bound state.