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Possible Existence of Charmonium-Nucleus Bound States
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abstract
Possible existence of $(c\bar{c})-$nucleus bound states are examined. We adopt Gaussian potentials for the $\eta_{c}-N$ and $J/\psi-N$ interactions. The relations between the scattering lengths $a$ of $(c\bar{c})-N$ interactions and the binding energies of $\eta_{c}-NN$, $J/\psi-NN$ and $J/\psi-^{4}$He are given. The results show that scattering lengths $a \le -0.95$ fm are needed to make $\eta_{c}-NN$ and $J/\psi-NN$ bound states, while for $a \le -0.24$ fm there may exist a $J/\psi-^{4}$He bound state.
Forward citations
Cited by 2 Pith papers
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Meson-Nucleus Bound States with Neural-Network Quantum States
Neural-network quantum states applied to HAL QCD meson-nucleon potentials predict bound states for phi at A>=2, J/psi at A>=4, and eta_c at A>=6, with binding energies from tens of MeV to sub-MeV scales.
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Medium modifications of $1P$-wave charmonia $\chi_{cJ}(1P)$ in cold nuclear matter
χcJ(1P) masses drop by 34–97 MeV in nuclear matter in the QMC+unquenched-loop model, with the D*D̄* loop dominating χc2 and no D-D̄ threshold crossing below 3ρ0.
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