Speaker
Mr
Takuya Sugiura
(RCNP, Osaka University)
Description
In this talk we report on the lattice QCD calculations of the interactions between a charmonium (either $\eta_c$ and $J/\psi$) and a nucleon. We use the method introduced by the HAL QCD collaboration to compute potentials, which guarantees the interaction to be faithful to the QCD S-matrix below the open-charm threshold. Our lattice simulation is performed with $2+1$ flavor full QCD gauge configurations on a $32^3\times 64$ lattice generated by the CP-PACS and JLQCD collaborations. The relativistic heavy quark action is employed for charm quarks. We find that both $\eta_c N$ and $J/\psi N$ are weakly attractive, but not strong enough to have a bound state.
Primary author
Mr
Takuya Sugiura
(RCNP, Osaka University)
Co-authors
Prof.
Noriyoshi Ishii
(RCNP)
Dr
Yoichi Ikeda
(RCNP)