Low-energy J/psi-hadron interactions from quenched lattice QCD

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.

Metadaten
Author:	Kazuo Yokokawa, Shoichi Sasaki, Arata Hayashigaki, Tetsuo Hatsuda
URN:	urn:nbn:de:hebis:30-45406
Parent Title (German):	Proceedings of Science, XXXIIIrd International Symposium on Lattice Field Theory, 25 - 30 July 2005, Trinity College, Dublin, Ireland
Document Type:	Article
Language:	English
Year of Completion:	2006
Year of first Publication:	2005
Publishing Institution:	Universitätsbibliothek Johann Christian Senckenberg
Release Date:	2007/06/14
Volume:	2005
Issue:	(LAT2005)215
Note:	Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.
Source:	XXXIIIrd International Symposium on Lattice Field Theory, 25 - 30 July 2005, Trinity College, Dublin, Ireland. - arXiv:hep-lat/0509189v1
HeBIS-PPN:	188892737
Institutes:	Physik / Physik
Dewey Decimal Classification:	5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):	Deutsches Urheberrecht

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