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arXiv · 1905.03934

Lattice QCD Study of the Nucleon-Charmonium Interaction

Takuya Sugiura·Yoichi Ikeda·Noriyoshi Ishii
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Abstract

The $J/\psi$-nucleon interaction is studied by lattice QCD calculations. At the leading order of the derivative expansion, the interaction consists of four terms: the central, the spin-spin, and two types of tensor forces. We determine these spin-dependent forces quantitatively by using the time-dependent HAL QCD method. We find that the spin-spin force is the main cause of the hyperfine splitting between the $J=1/2$ and the $J=3/2$ states, while the two tensor forces have much smaller effects on the S-wave scattering processes.

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Takuya Sugiura, Yoichi Ikeda, Noriyoshi Ishii. 2019-05-10. Lattice QCD Study of the Nucleon-Charmonium Interaction. https://doi.org/10.7566/jpscp.26.031015

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