Fully heavy multiquarks

TL;DR

This paper investigates the potential existence of stable multiquark states composed of heavy quarks using potential models, emphasizing the importance of accurate few-body calculations, and finds no bound states but suggests possible resonances.

Contribution

It provides a detailed analysis of heavy multiquark systems with a focus on the importance of precise few-body methods and discusses the likelihood of resonances rather than bound states.

Findings

No bound multiquark states found in current models

Resonances likely exist above the lowest threshold

Highlights need for accurate few-body calculations

Abstract

The existence of stable multiquarks made of heavy quarks and antiquarks is discussed in the framework of potential models. It is stressed that the few-body problem should be handled seriously and accurately. No bound state is found within the current models. But resonances are likely present in the spectrum above the lowest threshold.