文章基本信息

标题：Low-energy J/Psi-Hadron Interactions from Quenched Lattice QCD
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作者：K. Yokokawa ; S. Sasaki ; A. Hayashigaki,T.,Hatsuda 等
期刊名称：PoS - Proceedings of Science
印刷版ISSN：1824-8039
出版年度：2005
卷号：2005
出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：The J/y-hadron interaction is a key ingredient in analyzing the J/y suppression in hot hadronic matter as well as the propagation of J/y in nuclei. As a first step to clarify the J/y-hadron interactions at low energies, we have calculated J/y-p, J/y-r and J/y-nucleon scattering lengths by the quenched lattice QCD simulations with Wilson fermions for b = 6.2 on 243 ×48 and 323×48 lattices. Using the Lüscher’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/y-nucleon interaction is most attractive. Possibility of the J/y-nucleon bound state is also discussed.