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Low-energy J/psi-Hadron Interactions from Quenched Lattice QCD

K. Yokokawa·S. Sasaki·A. Hayashigaki·T. Hatsuda
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Abstract

The J/psi-hadron interaction is a key ingredient in analyzing the J/psi suppression in hot hadronic matter as well as the propagation of J/psi in nuclei. As a first step to clarify the J/psi-hadron interactions at low energies, we have calculated J/psi-pi, J/psi-rho and J/psi-nucleon scattering lengths by the quenched lattice QCD simulations with Wilson fermions for beta=6.2 on 24^3*48 and 32^3*48 lattices. Using the Luscher's method to extract the scattering length from the simulations in a finite box, we find an attractive interaction in the S-wave channel for all three systems: Among others, the J/psi-nucleon interaction is most attractive. Possibility of the J/psi-nucleon bound state is also discussed.

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K. Yokokawa, S. Sasaki, A. Hayashigaki, T. Hatsuda. 2005-09-30. Low-energy J/psi-Hadron Interactions from Quenched Lattice QCD. https://arxiv.org/abs/hep-lat/0509189

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