Prediction of triple-charm molecular pentaquarks

TL;DR

This paper predicts the existence of several triple-charm molecular pentaquarks using a one-boson-exchange model, extending to various heavy flavor systems, and encourages experimental searches for these states.

Contribution

The study introduces a theoretical prediction of multiple triple-charm and heavy-flavor molecular pentaquarks within a unified model, expanding the scope of possible exotic states.

Findings

Predicted two triple-charm molecular pentaquarks: $\xi_{cc}D$ and $\xi_{cc}D^*$.

Extended the model to include $\xi_{cc}ar{B}^{(*)}$, $\xi_{cc}ar{D}^{(*)}$, and $\xi_{cc}B^{(*)}$ systems.

Identified several additional heavy-flavor molecular pentaquark candidates.

Abstract

In a one-boson-exchange model, we study molecular states of double-charm baryon ($\Xi_{cc}(3621)$) and a charmed meson ($D$ and $D^*$). Our model indicates that there exist two possible triple-charm molecular pentaquarks, a $\Xi_{cc}D$ state with $I(J^P)=0(1/2^-)$ and a $\Xi_{cc}D^*$ state with $I(J^P)=0(3/2^-)$. In addition, we also extend our formula to explore $\Xi_{cc}\bar{B}^{(*)}$, $\Xi_{cc}\bar{D}^{(*)}$, and $\Xi_{cc}B^{(*)}$ systems, and find more possible heavy flavor molecular pentaquarks, a $\Xi_{cc}\bar{B}$ state with $I(J^P)=0(1/2^-)$, a $\Xi_{cc}\bar{B}^*$ state with $I(J^P)=0(3/2^-)$, and $\Xi_{cc}\bar{D}^*/\Xi_{cc}B^*$ states with $I(J^P)=0(1/2^-)$. Experimental search for these predicted triple-charm molecular pentaquarks is encouraged.