Exotic triple-charm deuteron-like hexaquarks

TL;DR

This study uses the one-boson-exchange model to explore potential triple-charm deuteron-like hexaquarks and molecular hexaquarks involving doubly charmed baryons, predicting their possible existence for future experimental detection.

Contribution

It provides a systematic theoretical investigation of heavy flavor hexaquarks, considering effects like $S$-$D$ mixing and coupled channels, and predicts new bound states involving doubly charmed baryons.

Findings

Several possible triple-charm deuteron-like hexaquarks identified.

Doubly charmed baryons can form shallow molecular hexaquarks with S-wave anticharmed baryons.

Predicted heavy flavor hexaquarks are accessible at future experiments like LHCb.

Abstract

Adopting the one-boson-exchange model, we perform a systematic investigation of interactions between a doubly charmed baryon $(\Xi_{cc})$ and an $S$-wave charmed baryon ($\Lambda_c$, $\Sigma_c^{(*)}$, and $\Xi_c^{(\prime,*)}$). Both the $S$-$D$ mixing effect and coupled-channel effect are considered in this work. Our results suggest that there may exist several possible triple-charm deuteron-like hexaquarks. Meanwhile, we further study the interactions between a doubly charmed baryon and an $S$-wave anticharmed baryon. We find that a doubly charmed baryon and an $S$-wave anticharmed baryon can be easily bound together to form shallow molecular hexaquarks. These heavy flavor hexaquarks predicted here can be accessible at future experiment like LHCb.