Low-energy J/psi-Hadron Interactions from Quenched Lattice QCD
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.
Keywords
Cite
@article{arxiv.hep-lat/0509189,
title = {Low-energy J/psi-Hadron Interactions from Quenched Lattice QCD},
author = {K. Yokokawa and S. Sasaki and A. Hayashigaki and T. Hatsuda},
journal= {arXiv preprint arXiv:hep-lat/0509189},
year = {2007}
}
Comments
6 pages, 6 figures, talk presented at Lattice 2005 (Heavy quark physics), Trinity College, Dublin, Ireland, 25-30 July 2005