Hidden charm mesons in nuclear matter and nuclei

Abstract

Recent results for the ${\eta }_c$- and $J/\psi$-nucleus bound state energies for various nuclei are presented. The attractive potentials for the ${\eta }_c$ and $J/\psi$ mesons in the nuclear medium originate, respectively, from the in-medium enhanced $D{D}^{\ast }$ and $D\bar{D}$ loops in the ${\eta }_c$ and $J/\psi$ self energies. Our results suggest that the ${\eta }_c$ and $J/\psi$ mesons should form bound states with all the nuclei considered.

Comments: Contribution to the proceedings of the 22nd Particles and Nuclei International Conference (PANIC 2021), 5 pages, 2 figures, and 1 table. arXiv admin note: text overlap with arXiv:2109.10995