Search for doubly-heavy dibaryons in a quark model

TL;DR

This study investigates the stability of doubly-heavy dibaryons using a quark model, finding no bound states due to chromoelectric and chromomagnetic effects, and also provides insights into anticharmed pentaquarks.

Contribution

It offers a detailed analysis of doubly-heavy dibaryons in a simple quark model, highlighting the absence of bound states and exploring implications for anticharmed pentaquarks.

Findings

No bound or metastable doubly-heavy dibaryons found.

Chromoelectric and chromomagnetic effects influence stability.

Insights into the unbound nature of anticharmed pentaquarks.

Abstract

We study the stability of hexaquark systems containing two heavy quarks and four light quarks within a simple quark model. No bound or metastable state is found. The reason stems on a delicate interplay between chromoelectric and chromomagnetic effects. Our calculation provides also information about anticharmed pentaquarks that are seemingly unbound in simple quark models.