We investigate the charmed baryon production reaction $p\overline{p}\to {\mathrm{\Lambda }}_c{\overline{\mathrm{\Lambda }}}_c$ in the effective Lagrangian approach. Besides the $t$-channel $D^0$ and $D^{*0}$ mesons exchanges, the $s$-channel $Y(4630)$ meson exchange is taken into account. For the total cross sections, the $D^0$ and $D^{*0}$ mesons provide minor background contributions, while the $Y(4630)$ state gives a clear peak structure with the magnitude of $10\mu \mathrm{b}$ at center-of-mass energy 4.63 GeV. Based on the results, we suggest that the reaction of $p\overline{p}\to {\mathrm{\Lambda }}_c{\overline{\mathrm{\Lambda }}}_c$ can be used to search for the $1^{--}$ charmoniumlike $Y(4630)$ state, and our predictions may be tested in the future by the $\overline{\mathrm{P}}\mathrm{ANDA}$ facility.

• Received 15 April 2016

DOI:https://doi.org/10.1103/PhysRevD.94.014025