Stable multiquark states with heavy quarks in a diquark model

TL;DR

This paper explores the stability of certain multiquark states containing heavy quarks using a diquark model, identifying new potential stable configurations that could exist against strong decay.

Contribution

It introduces a diquark-based approach to predict stable multiquark states with heavy quarks and identifies new candidates for such stable states.

Findings

Identification of the $T^0_{cb}$ tetraquark as stable

Prediction of the $ heta_{bs}$ pentaquark stability

Proposal of the $H_c$ dibaryon as a stable multiquark state

Abstract

Based on the color-spin interaction in diquarks, we argue why some multiquark configurations could be stable against strong decay when heavy quarks are included. After showing the stability of previously discussed states we identify new possible stable states. These are the $T^0_{cb}(ud \bar{c}\bar{b})$ tetraquark, the $\Theta_{bs}(udus \bar{b})$ pentaquark and the $H_c(udusuc)$ dibaryon, and so forth.