Stability of multiquarks in a simple string model

TL;DR

This paper investigates the stability of multiquark systems using a simple string model inspired by QCD, demonstrating that the ground state of a two-quark and two-antiquark system is stable against dissociation.

Contribution

It introduces a straightforward string model approach to analyze multiquark spectra, with a detailed four-body problem treatment, revealing ground state stability.

Findings

Ground state is stable and below meson dissociation threshold.

The model effectively captures multiquark stability.

Provides insights into multiquark configurations in QCD.

Abstract

A simple string model inspired by the strong-coupling regime of Quantum ChromoDynamics is used as a potential for studying the spectrum of multiquark systems with two quarks and two antiquarks, with a careful treatment of the four-body problem. It is found that the ground state is stable, lying below the threshold for dissociation into two isolated mesons.