The ${\Lambda }_c{\Sigma }_c$ dibaryon and ${\bar{\Lambda }}_c{\Sigma }_c\pm {\bar{\Sigma }}_c{\Lambda }_c$ baryonium states via the QCD sum rules

Abstract

In the present work, we study the ${\Lambda }_c{\Sigma }_c$ dibaryon and ${\bar{\Lambda }}_c{\Sigma }_c\pm {\bar{\Sigma }}_c{\Lambda }_c$ baryonium states via the QCD sum rules. We construct four (eight) currents with definite $J^P$ ($J^{PC}$) to interpolate the dibaryon (baryonium) states and obtain twelve QCD sum rules. For the dibaryon states, the state with the $J^P=1^{+}$ lies below the ${\Lambda }_c{\Sigma }_c$ threshold, and is a molecule candidate. For the baryonium states, the states with the $J^P=0^{-\pm }$ and $1^{-\pm }$ lie below the ${\bar{\Lambda }}_c{\Sigma }_c$ threshold, and are four molecule candidates. The present predictions can be confronted to the experimental data in the future and make contributions to the exotic spectroscopy.