Study on triple-hadron bound states with Gaussian expansion method

TL;DR

This paper investigates three-body hadronic molecules using the Gaussian expansion method, predicting new bound states like DDK, Xi_cc Xi_cc K̄, and BB K̄, which could be observed in current experiments.

Contribution

It introduces a novel application of the Gaussian expansion method to three-body hadronic molecules and predicts specific bound states not previously identified.

Findings

Prediction of DDK, Xi_cc Xi_cc K̄, and BB K̄ bound states

Potential for experimental discovery in current facilities

Supports the hadronic molecule interpretation of exotic states

Abstract

In recent years, more and more exotic hadronic states have been discovered successively. Many of them can be explained as hadronic molecules, such as $D_{s0}^*(2317)$, $X(3872)$, and $P_c$ pentaquark states. Analogous to the formation of nuclei, we study three-body hadronic molecules with the Gaussian expansion method and predict the existence of the $DDK$, $\Xi_{cc}\Xi_{cc}\bar{K}$, and $BB\bar{K}$ bound states, which are likely to be found in the current and updated facilities.