Prediction of triple-charm molecular pentaquarks

Abstract

In a one-boson-exchange model, we study molecular states of double-charm baryon [${\mathrm{\ensuremath{\Xi}}}_{cc}(3621)$] and a charmed meson ($D$ and ${D}^{*}$). Our model indicates that there exist two possible triple-charm molecular pentaquarks, a ${\mathrm{\ensuremath{\Xi}}}_{cc}D$ state with $I({J}^{P})=0(1/{2}^{\ensuremath{-}})$, and a ${\mathrm{\ensuremath{\Xi}}}_{cc}{D}^{*}$ state with $I({J}^{P})=0(3/{2}^{\ensuremath{-}})$, and we do not find bound solutions for isotriplet states. In addition, we also extend our formula to explore ${\mathrm{\ensuremath{\Xi}}}_{cc}{\overline{B}}^{(*)}$, ${\mathrm{\ensuremath{\Xi}}}_{cc}{\overline{D}}^{(*)}$, and ${\mathrm{\ensuremath{\Xi}}}_{cc}{B}^{(*)}$ systems and find more possible heavy flavor molecular pentaquarks, a ${\mathrm{\ensuremath{\Xi}}}_{cc}\overline{B}$ state with $I({J}^{P})=0(1/{2}^{\ensuremath{-}})$, a ${\mathrm{\ensuremath{\Xi}}}_{cc}{\overline{B}}^{*}$ state with $I({J}^{P})=0(3/{2}^{\ensuremath{-}})$, and ${\mathrm{\ensuremath{\Xi}}}_{cc}{\overline{D}}^{*}/{\mathrm{\ensuremath{\Xi}}}_{cc}{B}^{*}$ states with $I({J}^{P})=0(1/{2}^{\ensuremath{-}})$. Experimental research for these predicted triple-charm molecular pentaquarks is encouraged.